jLabel won't print from String

jLabel won't print from String - java

I'm trying to populate a jLabel with text from a global String in NetBeans, but every time I try to print anything other than a String literal, it prints nothing. I've tried directly printing the String, and my most recent attempt used a get() method.
Here's the code so far, I'm populating the label on line 73:
public class ChatWindow extends javax.swing.JFrame {
private Integer userID;
private String otherPerson = "";
/**
* Creates new form ChatWindow
* #param id
*/
public ChatWindow(int id) {
initComponents();
userID = id;
otherPerson = userID.toString();
this.setVisible(true);
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jScrollPane1 = new javax.swing.JScrollPane();
jTextArea1 = new javax.swing.JTextArea();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jTextField1 = new javax.swing.JTextField();
otherPersonLabel = new javax.swing.JLabel();
menuBar = new javax.swing.JMenuBar();
fileMenu = new javax.swing.JMenu();
openMenuItem = new javax.swing.JMenuItem();
saveMenuItem = new javax.swing.JMenuItem();
saveAsMenuItem = new javax.swing.JMenuItem();
exitMenuItem = new javax.swing.JMenuItem();
editMenu = new javax.swing.JMenu();
cutMenuItem = new javax.swing.JMenuItem();
copyMenuItem = new javax.swing.JMenuItem();
pasteMenuItem = new javax.swing.JMenuItem();
deleteMenuItem = new javax.swing.JMenuItem();
helpMenu = new javax.swing.JMenu();
contentsMenuItem = new javax.swing.JMenuItem();
aboutMenuItem = new javax.swing.JMenuItem();
setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
jTextArea1.setBackground(new java.awt.Color(248, 248, 248));
jTextArea1.setColumns(20);
jTextArea1.setRows(5);
jTextArea1.setText("ContactName: FloopyNoops\nYou: Yes, floopynoops");
jScrollPane1.setViewportView(jTextArea1);
jButton1.setText("Send");
jButton2.setText("Save");
jTextField1.setText("jTextField1");
otherPersonLabel.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
otherPersonLabel.setText(getLabelText());
fileMenu.setMnemonic('f');
fileMenu.setText("File");
openMenuItem.setMnemonic('o');
openMenuItem.setText("Open");
fileMenu.add(openMenuItem);
saveMenuItem.setMnemonic('s');
saveMenuItem.setText("Save");
fileMenu.add(saveMenuItem);
saveAsMenuItem.setMnemonic('a');
saveAsMenuItem.setText("Save As ...");
saveAsMenuItem.setDisplayedMnemonicIndex(5);
fileMenu.add(saveAsMenuItem);
exitMenuItem.setMnemonic('x');
exitMenuItem.setText("Exit");
exitMenuItem.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
exitMenuItemActionPerformed(evt);
}
});
fileMenu.add(exitMenuItem);
menuBar.add(fileMenu);
editMenu.setMnemonic('e');
editMenu.setText("Edit");
cutMenuItem.setMnemonic('t');
cutMenuItem.setText("Cut");
editMenu.add(cutMenuItem);
copyMenuItem.setMnemonic('y');
copyMenuItem.setText("Copy");
editMenu.add(copyMenuItem);
pasteMenuItem.setMnemonic('p');
pasteMenuItem.setText("Paste");
editMenu.add(pasteMenuItem);
deleteMenuItem.setMnemonic('d');
deleteMenuItem.setText("Delete");
editMenu.add(deleteMenuItem);
menuBar.add(editMenu);
helpMenu.setMnemonic('h');
helpMenu.setText("Help");
contentsMenuItem.setMnemonic('c');
contentsMenuItem.setText("Contents");
helpMenu.add(contentsMenuItem);
aboutMenuItem.setMnemonic('a');
aboutMenuItem.setText("About");
helpMenu.add(aboutMenuItem);
menuBar.add(helpMenu);
setJMenuBar(menuBar);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 380, Short.MAX_VALUE)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addComponent(jTextField1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jButton1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.addGroup(layout.createSequentialGroup()
.addComponent(otherPersonLabel)
.addGap(0, 0, Short.MAX_VALUE)))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(5, 5, 5)
.addComponent(otherPersonLabel)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 202, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(6, 6, 6)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 64, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(layout.createSequentialGroup()
.addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 28, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void exitMenuItemActionPerformed(java.awt.event.ActionEvent evt) {
this.dispose();
}
private String getLabelText(){
return otherPerson;
}
// Variables declaration - do not modify
private javax.swing.JMenuItem aboutMenuItem;
private javax.swing.JMenuItem contentsMenuItem;
private javax.swing.JMenuItem copyMenuItem;
private javax.swing.JMenuItem cutMenuItem;
private javax.swing.JMenuItem deleteMenuItem;
private javax.swing.JMenu editMenu;
private javax.swing.JMenuItem exitMenuItem;
private javax.swing.JMenu fileMenu;
private javax.swing.JMenu helpMenu;
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextArea jTextArea1;
private javax.swing.JTextField jTextField1;
private javax.swing.JMenuBar menuBar;
private javax.swing.JMenuItem openMenuItem;
private javax.swing.JLabel otherPersonLabel;
private javax.swing.JMenuItem pasteMenuItem;
private javax.swing.JMenuItem saveAsMenuItem;
private javax.swing.JMenuItem saveMenuItem;
// End of variables declaration
}

I believe the constructor is your issue.
public ChatWindow(int id) {
initComponents(); //otherPerson = "";
userID = id;
otherPerson = userID.toString(); //otherPerson = id;
this.setVisible(true);
}
You initialize the component before otherPerson is set. Move initComponents after setting otherPerson and it should work again.

You are calling "initcomponent" first and then initializing "otherPerson" class member. Do it like this:
public ChatWindow(int id)
{
userID = id;
otherPerson = userID.toString();
initComponents();
this.setVisible(true);
}

Related

How to make paginations buttons (Next, Previous) that load button values from database?

I want to make a category JPanel in which I get all buttons values from the database on scroll pane but I want to remove the scroll pane and use pagination two buttons (Next, Previous) that control button values from database next or previous.
Output Image.png
Image 2 Frome JAva Floreant POS Like this.
Image#02 JAVA Floreant POS.png
Following my code:
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package posresturent;
import com.mysql.jdbc.Connection;
import com.mysql.jdbc.PreparedStatement;
import static java.awt.Component.CENTER_ALIGNMENT;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.DriverManager;
import java.sql.ResultSet;
import javax.swing.AbstractButton;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JOptionPane;
import javax.swing.JScrollBar;
import javax.swing.SwingConstants;
/**
*
* #author ultronhouse11
*/
public class mainPanel extends javax.swing.JPanel {
/**
* Creates new form mainPanel
*/
private JButton btnCategory;
final int col = 5;
final int rows = 2;
Connection con;
PreparedStatement pst;
ResultSet rs;
public mainPanel() {
initComponents();
cat_buttons();
}
public void cat_buttons() {
try {
Class.forName("com.mysql.jdbc.Driver");
con = (Connection) DriverManager.getConnection("jdbc:mysql://localhost:3306/shopingmoll", "root", "qwer9900");
String sl = "SELECT * FROM `item_types` ";
pst = (PreparedStatement) con.prepareStatement(sl);
rs = pst.executeQuery();
// JFlowPanel jPeople = new JFlowPanel();
//rs.absolute(5);
// while (rs.next()) {
rs.absolute(1);
rs.absolute(5);
String a1 = rs.getString("name");
String a2 = rs.getString("id");
JButton btn = new JButton();
btn.setText("<html><body> <h3>" + a1 + "</h3><br> <b></body></html> ");
btn.setVerticalAlignment((int) CENTER_ALIGNMENT);
btn.applyComponentOrientation(getComponentOrientation());
btn.setFocusPainted(false);
btn.setFocusable(false);
btn.setRequestFocusEnabled(false);
btn.setMaximumSize(new Dimension(110, 90));
btn.setPreferredSize(new Dimension(90, 80));
btn.setMinimumSize(new Dimension(110, 90));
btn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.out.println(a1+":"+a2);
}
});
//String a2 = rs.getString(2);
ImageIcon img = new ImageIcon("src/posresturent/cat.jpg");
// btn.setIcon(img);
btn.setHorizontalAlignment(SwingConstants.CENTER);
btn.setHorizontalTextPosition(AbstractButton.CENTER);
btn.setVerticalTextPosition(AbstractButton.BOTTOM);
cat_panel.add(btn,"center");
repaint();
revalidate();
//}
// cat_sch.getViewport().setView(jPeople);
} catch (Exception e) {
}
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jTabbedPane1 = new javax.swing.JTabbedPane();
jPanel2 = new javax.swing.JPanel();
sch = new javax.swing.JScrollPane();
jPanel9 = new javax.swing.JPanel();
jPanel11 = new javax.swing.JPanel();
textFieldRectBackground1 = new org.edisoncor.gui.textField.TextFieldRectBackground();
jScrollPane1 = new javax.swing.JScrollPane();
jTable1 = new javax.swing.JTable();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
jTextField3 = new javax.swing.JTextField();
jLabel3 = new javax.swing.JLabel();
jPanel10 = new javax.swing.JPanel();
jButton4 = new javax.swing.JButton();
jButton5 = new javax.swing.JButton();
jButton6 = new javax.swing.JButton();
jButton7 = new javax.swing.JButton();
jButton8 = new javax.swing.JButton();
jButton9 = new javax.swing.JButton();
jButton10 = new javax.swing.JButton();
cat_panel = new javax.swing.JPanel();
jPanel5 = new javax.swing.JPanel();
jButton14 = new javax.swing.JButton();
jButton15 = new javax.swing.JButton();
jPanel6 = new javax.swing.JPanel();
jButton22 = new javax.swing.JButton();
jButton23 = new javax.swing.JButton();
jButton24 = new javax.swing.JButton();
jButton25 = new javax.swing.JButton();
jButton26 = new javax.swing.JButton();
jButton27 = new javax.swing.JButton();
jPanel3 = new javax.swing.JPanel();
jPanel1 = new javax.swing.JPanel();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
jButton11 = new javax.swing.JButton();
jButton12 = new javax.swing.JButton();
jButton13 = new javax.swing.JButton();
sch.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Items", javax.swing.border.TitledBorder.CENTER, javax.swing.border.TitledBorder.DEFAULT_POSITION));
jPanel11.setLayout(new java.awt.GridLayout(1, 0));
textFieldRectBackground1.setDescripcion("Enter Barcode ...");
textFieldRectBackground1.setFocusCycleRoot(true);
jPanel11.add(textFieldRectBackground1);
jTable1.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null}
},
new String [] {
"#SrNo", "Product", "Unit", "Rate"
}
));
jTable1.setRowHeight(35);
jScrollPane1.setViewportView(jTable1);
jLabel1.setFont(new java.awt.Font("Arial", 0, 14)); // NOI18N
jLabel1.setText("Total ");
jLabel2.setFont(new java.awt.Font("Arial", 0, 14)); // NOI18N
jLabel2.setText("Tax");
jTextField1.setFont(new java.awt.Font("Arial", 1, 18)); // NOI18N
jTextField1.setHorizontalAlignment(javax.swing.JTextField.RIGHT);
jTextField1.setText("0.00");
jTextField2.setFont(new java.awt.Font("Arial", 1, 18)); // NOI18N
jTextField2.setHorizontalAlignment(javax.swing.JTextField.RIGHT);
jTextField2.setText("0.00");
jTextField3.setFont(new java.awt.Font("Arial Black", 1, 45)); // NOI18N
jTextField3.setForeground(new java.awt.Color(51, 51, 51));
jTextField3.setHorizontalAlignment(javax.swing.JTextField.CENTER);
jTextField3.setText(" Rs 0.00");
jLabel3.setFont(new java.awt.Font("Arial", 0, 14)); // NOI18N
jLabel3.setText("<html> Grand <br><br> Total");
javax.swing.GroupLayout jPanel9Layout = new javax.swing.GroupLayout(jPanel9);
jPanel9.setLayout(jPanel9Layout);
jPanel9Layout.setHorizontalGroup(
jPanel9Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel11, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(jPanel9Layout.createSequentialGroup()
.addGroup(jPanel9Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel2)
.addComponent(jLabel1)
.addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(35, 35, 35)
.addGroup(jPanel9Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jTextField3, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 230, Short.MAX_VALUE)
.addComponent(jTextField1, javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jTextField2, javax.swing.GroupLayout.Alignment.TRAILING))
.addGap(0, 0, Short.MAX_VALUE))
.addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.PREFERRED_SIZE, 309, javax.swing.GroupLayout.PREFERRED_SIZE)
);
jPanel9Layout.setVerticalGroup(
jPanel9Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel9Layout.createSequentialGroup()
.addComponent(jPanel11, javax.swing.GroupLayout.PREFERRED_SIZE, 33, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(1, 1, 1)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 0, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel9Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel9Layout.createSequentialGroup()
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(7, 7, 7))
.addGroup(jPanel9Layout.createSequentialGroup()
.addComponent(jLabel1)
.addGap(18, 18, 18)
.addComponent(jLabel2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)))
.addGroup(jPanel9Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, 69, javax.swing.GroupLayout.PREFERRED_SIZE)))
);
jPanel10.setLayout(new java.awt.GridLayout(7, 0, 0, 3));
jButton4.setIcon(new javax.swing.ImageIcon(getClass().getResource("/icons/add_shopping_cart_40px.png"))); // NOI18N
jPanel10.add(jButton4);
jButton5.setIcon(new javax.swing.ImageIcon(getClass().getResource("/icons/up.png"))); // NOI18N
jPanel10.add(jButton5);
jButton6.setIcon(new javax.swing.ImageIcon(getClass().getResource("/icons/minus.png"))); // NOI18N
jPanel10.add(jButton6);
jButton7.setIcon(new javax.swing.ImageIcon(getClass().getResource("/icons/add_user.png"))); // NOI18N
jPanel10.add(jButton7);
jButton8.setIcon(new javax.swing.ImageIcon(getClass().getResource("/icons/delete.png"))); // NOI18N
jPanel10.add(jButton8);
jButton9.setIcon(new javax.swing.ImageIcon(getClass().getResource("/icons/edit_30px.png"))); // NOI18N
jPanel10.add(jButton9);
jButton10.setIcon(new javax.swing.ImageIcon(getClass().getResource("/icons/down.png"))); // NOI18N
jPanel10.add(jButton10);
cat_panel.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Category", javax.swing.border.TitledBorder.CENTER, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Tahoma", 0, 11), new java.awt.Color(51, 51, 51))); // NOI18N
cat_panel.setLayout(new java.awt.GridLayout(0, 1, 3, 5));
jPanel5.setLayout(new java.awt.GridLayout(1, 2, 2, 0));
jButton14.setIcon(new javax.swing.ImageIcon(getClass().getResource("/icons/previous.png"))); // NOI18N
jButton14.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
jButton14.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton14ActionPerformed(evt);
}
});
jPanel5.add(jButton14);
jButton15.setIcon(new javax.swing.ImageIcon(getClass().getResource("/icons/next_32.png"))); // NOI18N
jButton15.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);
jButton15.setHorizontalTextPosition(javax.swing.SwingConstants.RIGHT);
jButton15.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton15ActionPerformed(evt);
}
});
jPanel5.add(jButton15);
jPanel6.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Groups", javax.swing.border.TitledBorder.CENTER, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Tahoma", 0, 11), new java.awt.Color(51, 51, 51))); // NOI18N
jPanel6.setLayout(new java.awt.GridLayout(1, 6, 3, 0));
jButton22.setText("jButton22");
jPanel6.add(jButton22);
jButton23.setText("jButton23");
jPanel6.add(jButton23);
jButton24.setText("jButton23");
jPanel6.add(jButton24);
jButton25.setText("jButton22");
jPanel6.add(jButton25);
jButton26.setText("jButton23");
jPanel6.add(jButton26);
jButton27.setText("jButton22");
jPanel6.add(jButton27);
javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);
jPanel2Layout.setHorizontalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel2Layout.createSequentialGroup()
.addComponent(jPanel9, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jPanel10, javax.swing.GroupLayout.PREFERRED_SIZE, 66, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(sch)
.addComponent(jPanel6, javax.swing.GroupLayout.DEFAULT_SIZE, 658, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jPanel5, javax.swing.GroupLayout.PREFERRED_SIZE, 124, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(cat_panel, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGap(2, 2, 2))
);
jPanel2Layout.setVerticalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel10, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jPanel9, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(jPanel2Layout.createSequentialGroup()
.addComponent(cat_panel, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jPanel5, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel2Layout.createSequentialGroup()
.addComponent(jPanel6, javax.swing.GroupLayout.PREFERRED_SIZE, 52, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(0, 0, 0)
.addComponent(sch))
);
jTabbedPane1.addTab("ADD STOCK", jPanel2);
javax.swing.GroupLayout jPanel3Layout = new javax.swing.GroupLayout(jPanel3);
jPanel3.setLayout(jPanel3Layout);
jPanel3Layout.setHorizontalGroup(
jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 1177, Short.MAX_VALUE)
);
jPanel3Layout.setVerticalGroup(
jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 513, Short.MAX_VALUE)
);
jTabbedPane1.addTab("ADD ACCOUNTS", jPanel3);
jPanel1.setLayout(new java.awt.GridLayout(1, 6, 4, 0));
jButton1.setText("Add New Stocks");
jPanel1.add(jButton1);
jButton2.setText("Add Category");
jPanel1.add(jButton2);
jButton3.setText("Modification Stock");
jPanel1.add(jButton3);
jButton11.setText("Add Groups");
jPanel1.add(jButton11);
jPanel1.add(jButton12);
jPanel1.add(jButton13);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
this.setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jTabbedPane1)
.addContainerGap())
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, 45, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(1, 1, 1)
.addComponent(jTabbedPane1))
);
}// </editor-fold>
private void jButton15ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void jButton14ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
// Variables declaration - do not modify
private javax.swing.JPanel cat_panel;
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton10;
private javax.swing.JButton jButton11;
private javax.swing.JButton jButton12;
private javax.swing.JButton jButton13;
private javax.swing.JButton jButton14;
private javax.swing.JButton jButton15;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton22;
private javax.swing.JButton jButton23;
private javax.swing.JButton jButton24;
private javax.swing.JButton jButton25;
private javax.swing.JButton jButton26;
private javax.swing.JButton jButton27;
private javax.swing.JButton jButton3;
private javax.swing.JButton jButton4;
private javax.swing.JButton jButton5;
private javax.swing.JButton jButton6;
private javax.swing.JButton jButton7;
private javax.swing.JButton jButton8;
private javax.swing.JButton jButton9;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel10;
private javax.swing.JPanel jPanel11;
private javax.swing.JPanel jPanel2;
private javax.swing.JPanel jPanel3;
private javax.swing.JPanel jPanel5;
private javax.swing.JPanel jPanel6;
private javax.swing.JPanel jPanel9;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTabbedPane jTabbedPane1;
private javax.swing.JTable jTable1;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
private javax.swing.JTextField jTextField3;
private javax.swing.JScrollPane sch;
private org.edisoncor.gui.textField.TextFieldRectBackground textFieldRectBackground1;
// End of variables declaration
}
Next Pagination Button eventAction
private void jButton15ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
Previous Button Pagination event action
private void jButton14ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}

Please check the bellow solution and update it as you required
import com.mysql.jdbc.Connection;
import com.mysql.jdbc.PreparedStatement;
import static java.awt.Component.CENTER_ALIGNMENT;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.DriverManager;
import java.sql.ResultSet;
import javax.swing.AbstractButton;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JOptionPane;
import javax.swing.JScrollBar;
import javax.swing.SwingConstants;
/**
*
* #author ultronhouse11
*/
public class mainPanel extends javax.swing.JPanel {
/**
* Creates new form mainPanel
*/
private JButton btnCategory;
final int col = 5;
final int rows = 2;
private Connection con;
private int pageIndex = 1;
public mainPanel() {
initComponents();
// open mysql connectivity
openConnection();
// load first page initialy
loadPage(pageIndex);
}
private void openConnection(){
try{
Class.forName("com.mysql.jdbc.Driver");
con = (Connection) DriverManager.getConnection("jdbc:mysql://localhost:3306/shopingmoll", "root", "qwer9900");
} catch(Exception e){
e.printStackTrace();
}
}
private void loadPage(int page) {
this.pageIndex = page;
try {
// Customize page size here
int pageSize = 10;
String sl = "SELECT * FROM `item_types` LIMIT ? OFFSET ?";
PreparedStatement pst = (PreparedStatement) con.prepareStatement(sl);
pst.setInt(0, pageSize);
pst.setInt(1, pageSize * page);
ResultSet rs = pst.executeQuery();
// remove all child elements
cat_panel.removeAll();
while (rs.next()) {
String a1 = rs.getString("name");
String a2 = rs.getString("id");
JButton btn = new JButton();
btn.setText("<html><body> <h3>" + a1 + "</h3><br> <b></body></html> ");
btn.setVerticalAlignment((int) CENTER_ALIGNMENT);
btn.applyComponentOrientation(getComponentOrientation());
btn.setFocusPainted(false);
btn.setFocusable(false);
btn.setRequestFocusEnabled(false);
btn.setMaximumSize(new Dimension(110, 90));
btn.setPreferredSize(new Dimension(90, 80));
btn.setMinimumSize(new Dimension(110, 90));
btn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.out.println(a1+":"+a2);
}
});
//String a2 = rs.getString(2);
ImageIcon img = new ImageIcon("src/posresturent/cat.jpg");
// btn.setIcon(img);
btn.setHorizontalAlignment(SwingConstants.CENTER);
btn.setHorizontalTextPosition(AbstractButton.CENTER);
btn.setVerticalTextPosition(AbstractButton.BOTTOM);
cat_panel.add(btn,"center");
cat_panel.repaint();
cat_panel.revalidate();
}
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jTabbedPane1 = new javax.swing.JTabbedPane();
jPanel2 = new javax.swing.JPanel();
sch = new javax.swing.JScrollPane();
jPanel9 = new javax.swing.JPanel();
jPanel11 = new javax.swing.JPanel();
textFieldRectBackground1 = new org.edisoncor.gui.textField.TextFieldRectBackground();
jScrollPane1 = new javax.swing.JScrollPane();
jTable1 = new javax.swing.JTable();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
jTextField3 = new javax.swing.JTextField();
jLabel3 = new javax.swing.JLabel();
jPanel10 = new javax.swing.JPanel();
jButton4 = new javax.swing.JButton();
jButton5 = new javax.swing.JButton();
jButton6 = new javax.swing.JButton();
jButton7 = new javax.swing.JButton();
jButton8 = new javax.swing.JButton();
jButton9 = new javax.swing.JButton();
jButton10 = new javax.swing.JButton();
cat_panel = new javax.swing.JPanel();
jPanel5 = new javax.swing.JPanel();
jButton14 = new javax.swing.JButton();
jButton15 = new javax.swing.JButton();
jPanel6 = new javax.swing.JPanel();
jButton22 = new javax.swing.JButton();
jButton23 = new javax.swing.JButton();
jButton24 = new javax.swing.JButton();
jButton25 = new javax.swing.JButton();
jButton26 = new javax.swing.JButton();
jButton27 = new javax.swing.JButton();
jPanel3 = new javax.swing.JPanel();
jPanel1 = new javax.swing.JPanel();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
jButton11 = new javax.swing.JButton();
jButton12 = new javax.swing.JButton();
jButton13 = new javax.swing.JButton();
sch.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Items", javax.swing.border.TitledBorder.CENTER, javax.swing.border.TitledBorder.DEFAULT_POSITION));
jPanel11.setLayout(new java.awt.GridLayout(1, 0));
textFieldRectBackground1.setDescripcion("Enter Barcode ...");
textFieldRectBackground1.setFocusCycleRoot(true);
jPanel11.add(textFieldRectBackground1);
jTable1.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null}
},
new String [] {
"#SrNo", "Product", "Unit", "Rate"
}
));
jTable1.setRowHeight(35);
jScrollPane1.setViewportView(jTable1);
jLabel1.setFont(new java.awt.Font("Arial", 0, 14)); // NOI18N
jLabel1.setText("Total ");
jLabel2.setFont(new java.awt.Font("Arial", 0, 14)); // NOI18N
jLabel2.setText("Tax");
jTextField1.setFont(new java.awt.Font("Arial", 1, 18)); // NOI18N
jTextField1.setHorizontalAlignment(javax.swing.JTextField.RIGHT);
jTextField1.setText("0.00");
jTextField2.setFont(new java.awt.Font("Arial", 1, 18)); // NOI18N
jTextField2.setHorizontalAlignment(javax.swing.JTextField.RIGHT);
jTextField2.setText("0.00");
jTextField3.setFont(new java.awt.Font("Arial Black", 1, 45)); // NOI18N
jTextField3.setForeground(new java.awt.Color(51, 51, 51));
jTextField3.setHorizontalAlignment(javax.swing.JTextField.CENTER);
jTextField3.setText(" Rs 0.00");
jLabel3.setFont(new java.awt.Font("Arial", 0, 14)); // NOI18N
jLabel3.setText("<html> Grand <br><br> Total");
javax.swing.GroupLayout jPanel9Layout = new javax.swing.GroupLayout(jPanel9);
jPanel9.setLayout(jPanel9Layout);
jPanel9Layout.setHorizontalGroup(
jPanel9Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel11, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(jPanel9Layout.createSequentialGroup()
.addGroup(jPanel9Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel2)
.addComponent(jLabel1)
.addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(35, 35, 35)
.addGroup(jPanel9Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jTextField3, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 230, Short.MAX_VALUE)
.addComponent(jTextField1, javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jTextField2, javax.swing.GroupLayout.Alignment.TRAILING))
.addGap(0, 0, Short.MAX_VALUE))
.addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.PREFERRED_SIZE, 309, javax.swing.GroupLayout.PREFERRED_SIZE)
);
jPanel9Layout.setVerticalGroup(
jPanel9Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel9Layout.createSequentialGroup()
.addComponent(jPanel11, javax.swing.GroupLayout.PREFERRED_SIZE, 33, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(1, 1, 1)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 0, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel9Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel9Layout.createSequentialGroup()
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(7, 7, 7))
.addGroup(jPanel9Layout.createSequentialGroup()
.addComponent(jLabel1)
.addGap(18, 18, 18)
.addComponent(jLabel2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)))
.addGroup(jPanel9Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, 69, javax.swing.GroupLayout.PREFERRED_SIZE)))
);
jPanel10.setLayout(new java.awt.GridLayout(7, 0, 0, 3));
jButton4.setIcon(new javax.swing.ImageIcon(getClass().getResource("/icons/add_shopping_cart_40px.png"))); // NOI18N
jPanel10.add(jButton4);
jButton5.setIcon(new javax.swing.ImageIcon(getClass().getResource("/icons/up.png"))); // NOI18N
jPanel10.add(jButton5);
jButton6.setIcon(new javax.swing.ImageIcon(getClass().getResource("/icons/minus.png"))); // NOI18N
jPanel10.add(jButton6);
jButton7.setIcon(new javax.swing.ImageIcon(getClass().getResource("/icons/add_user.png"))); // NOI18N
jPanel10.add(jButton7);
jButton8.setIcon(new javax.swing.ImageIcon(getClass().getResource("/icons/delete.png"))); // NOI18N
jPanel10.add(jButton8);
jButton9.setIcon(new javax.swing.ImageIcon(getClass().getResource("/icons/edit_30px.png"))); // NOI18N
jPanel10.add(jButton9);
jButton10.setIcon(new javax.swing.ImageIcon(getClass().getResource("/icons/down.png"))); // NOI18N
jPanel10.add(jButton10);
cat_panel.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Category", javax.swing.border.TitledBorder.CENTER, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Tahoma", 0, 11), new java.awt.Color(51, 51, 51))); // NOI18N
cat_panel.setLayout(new java.awt.GridLayout(0, 1, 3, 5));
jPanel5.setLayout(new java.awt.GridLayout(1, 2, 2, 0));
jButton14.setIcon(new javax.swing.ImageIcon(getClass().getResource("/icons/previous.png"))); // NOI18N
jButton14.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
jButton14.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton14ActionPerformed(evt);
}
});
jPanel5.add(jButton14);
jButton15.setIcon(new javax.swing.ImageIcon(getClass().getResource("/icons/next_32.png"))); // NOI18N
jButton15.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);
jButton15.setHorizontalTextPosition(javax.swing.SwingConstants.RIGHT);
jButton15.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton15ActionPerformed(evt);
}
});
jPanel5.add(jButton15);
jPanel6.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Groups", javax.swing.border.TitledBorder.CENTER, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Tahoma", 0, 11), new java.awt.Color(51, 51, 51))); // NOI18N
jPanel6.setLayout(new java.awt.GridLayout(1, 6, 3, 0));
jButton22.setText("jButton22");
jPanel6.add(jButton22);
jButton23.setText("jButton23");
jPanel6.add(jButton23);
jButton24.setText("jButton23");
jPanel6.add(jButton24);
jButton25.setText("jButton22");
jPanel6.add(jButton25);
jButton26.setText("jButton23");
jPanel6.add(jButton26);
jButton27.setText("jButton22");
jPanel6.add(jButton27);
javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);
jPanel2Layout.setHorizontalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel2Layout.createSequentialGroup()
.addComponent(jPanel9, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jPanel10, javax.swing.GroupLayout.PREFERRED_SIZE, 66, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(sch)
.addComponent(jPanel6, javax.swing.GroupLayout.DEFAULT_SIZE, 658, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jPanel5, javax.swing.GroupLayout.PREFERRED_SIZE, 124, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(cat_panel, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGap(2, 2, 2))
);
jPanel2Layout.setVerticalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel10, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jPanel9, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(jPanel2Layout.createSequentialGroup()
.addComponent(cat_panel, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jPanel5, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel2Layout.createSequentialGroup()
.addComponent(jPanel6, javax.swing.GroupLayout.PREFERRED_SIZE, 52, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(0, 0, 0)
.addComponent(sch))
);
jTabbedPane1.addTab("ADD STOCK", jPanel2);
javax.swing.GroupLayout jPanel3Layout = new javax.swing.GroupLayout(jPanel3);
jPanel3.setLayout(jPanel3Layout);
jPanel3Layout.setHorizontalGroup(
jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 1177, Short.MAX_VALUE)
);
jPanel3Layout.setVerticalGroup(
jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 513, Short.MAX_VALUE)
);
jTabbedPane1.addTab("ADD ACCOUNTS", jPanel3);
jPanel1.setLayout(new java.awt.GridLayout(1, 6, 4, 0));
jButton1.setText("Add New Stocks");
jPanel1.add(jButton1);
jButton2.setText("Add Category");
jPanel1.add(jButton2);
jButton3.setText("Modification Stock");
jPanel1.add(jButton3);
jButton11.setText("Add Groups");
jPanel1.add(jButton11);
jPanel1.add(jButton12);
jPanel1.add(jButton13);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
this.setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jTabbedPane1)
.addContainerGap())
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, 45, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(1, 1, 1)
.addComponent(jTabbedPane1))
);
}// </editor-fold>
private void jButton15ActionPerformed(java.awt.event.ActionEvent evt) {
// next button
loadPage(pageIndex+1);
}
private void jButton14ActionPerformed(java.awt.event.ActionEvent evt) {
// previous button
loadPage(pageIndex-1);
}
// Variables declaration - do not modify
private javax.swing.JPanel cat_panel;
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton10;
private javax.swing.JButton jButton11;
private javax.swing.JButton jButton12;
private javax.swing.JButton jButton13;
private javax.swing.JButton jButton14;
private javax.swing.JButton jButton15;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton22;
private javax.swing.JButton jButton23;
private javax.swing.JButton jButton24;
private javax.swing.JButton jButton25;
private javax.swing.JButton jButton26;
private javax.swing.JButton jButton27;
private javax.swing.JButton jButton3;
private javax.swing.JButton jButton4;
private javax.swing.JButton jButton5;
private javax.swing.JButton jButton6;
private javax.swing.JButton jButton7;
private javax.swing.JButton jButton8;
private javax.swing.JButton jButton9;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel10;
private javax.swing.JPanel jPanel11;
private javax.swing.JPanel jPanel2;
private javax.swing.JPanel jPanel3;
private javax.swing.JPanel jPanel5;
private javax.swing.JPanel jPanel6;
private javax.swing.JPanel jPanel9;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTabbedPane jTabbedPane1;
private javax.swing.JTable jTable1;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
private javax.swing.JTextField jTextField3;
private javax.swing.JScrollPane sch;
private org.edisoncor.gui.textField.TextFieldRectBackground textFieldRectBackground1;
// End of variables declaration
}
Previous Button Event Code when press button console error
loadPage(pageIndex + 1);
System.out.println(String.valueOf(pageIndex - 1));
Previous Button after press console error.
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '-4' at line 1
0
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6539)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6304)
at java.awt.Container.processEvent(Container.java:2239)
at java.awt.Component.dispatchEventImpl(Component.java:4889)
at java.awt.Container.dispatchEventImpl(Container.java:2297)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4904)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4535)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4476)
at java.awt.Container.dispatchEventImpl(Container.java:2283)
at java.awt.Window.dispatchEventImpl(Window.java:2746)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:760)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at

How to open another jframe with button click in different package

i am developing a java application using swing with the help of net beans. i have to open different j frame which is in different java file in another package.. with a button click.
i also want to transfer information from the current page (j frame) to the redirected j frame.
information like content of text field, radio button drop down list etc..
help me with what to write in button click action listener....
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/*
* CriptUI.java
*
* Created on 31 Aug, 2013, 6:05:02 PM
*/
package crypt;
/**
*
* #author Nitin
*/
public class CryptUI extends javax.swing.JFrame {
/** Creates new form CriptUI */
public CryptUI() {
initComponents();
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jPanel1 = new javax.swing.JPanel();
jPanel2 = new javax.swing.JPanel();
jLabel1 = new javax.swing.JLabel();
jComboBox1 = new javax.swing.JComboBox();
jLabel2 = new javax.swing.JLabel();
jSpinner1 = new javax.swing.JSpinner();
jButton1 = new javax.swing.JButton();
jLabel3 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jLabel4 = new javax.swing.JLabel();
jTextField2 = new javax.swing.JTextField();
jPanel3 = new javax.swing.JPanel();
jScrollPane1 = new javax.swing.JScrollPane();
jTextArea1 = new javax.swing.JTextArea();
jPanel4 = new javax.swing.JPanel();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
jMenuBar1 = new javax.swing.JMenuBar();
jMenu1 = new javax.swing.JMenu();
jMenuItem1 = new javax.swing.JMenuItem();
jMenu2 = new javax.swing.JMenu();
jMenuItem2 = new javax.swing.JMenuItem();
jMenuItem3 = new javax.swing.JMenuItem();
jMenuItem4 = new javax.swing.JMenuItem();
jSeparator1 = new javax.swing.JPopupMenu.Separator();
jMenuItem5 = new javax.swing.JMenuItem();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jPanel1.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 628, Short.MAX_VALUE)
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 28, Short.MAX_VALUE)
);
jPanel2.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
jLabel1.setText("Chose Algorithm:");
jComboBox1.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Item 1", "Item 2", "Item 3", "Item 4" }));
jLabel2.setText("Number of itterations:");
jSpinner1.setModel(new javax.swing.SpinnerNumberModel(1, 1, 99, 1));
jButton1.setText("Encrypt Text");
jLabel3.setText("Generated soft key to decrypt:");
jLabel4.setText("Enter key:");
javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);
jPanel2Layout.setHorizontalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jComboBox1, 0, 218, Short.MAX_VALUE)
.addComponent(jLabel1)
.addGroup(jPanel2Layout.createSequentialGroup()
.addComponent(jLabel2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jSpinner1, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE))
.addComponent(jButton1, javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jTextField1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 218, Short.MAX_VALUE)
.addComponent(jLabel3)
.addGroup(jPanel2Layout.createSequentialGroup()
.addComponent(jLabel4)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, 98, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap())
);
jPanel2Layout.setVerticalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addContainerGap()
.addComponent(jLabel1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(jSpinner1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(45, 45, 45)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel4)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 77, Short.MAX_VALUE)
.addComponent(jLabel3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jButton1)
.addContainerGap())
);
jPanel3.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
jTextArea1.setColumns(20);
jTextArea1.setRows(5);
jScrollPane1.setViewportView(jTextArea1);
javax.swing.GroupLayout jPanel3Layout = new javax.swing.GroupLayout(jPanel3);
jPanel3.setLayout(jPanel3Layout);
jPanel3Layout.setHorizontalGroup(
jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel3Layout.createSequentialGroup()
.addContainerGap()
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 362, Short.MAX_VALUE)
.addContainerGap())
);
jPanel3Layout.setVerticalGroup(
jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel3Layout.createSequentialGroup()
.addContainerGap(35, Short.MAX_VALUE)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 240, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap())
);
jPanel4.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
jButton2.setText("Send");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});
jButton3.setText("Export");
javax.swing.GroupLayout jPanel4Layout = new javax.swing.GroupLayout(jPanel4);
jPanel4.setLayout(jPanel4Layout);
jPanel4Layout.setHorizontalGroup(
jPanel4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel4Layout.createSequentialGroup()
.addContainerGap(236, Short.MAX_VALUE)
.addComponent(jButton3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton2)
.addContainerGap())
);
jPanel4Layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {jButton2, jButton3});
jPanel4Layout.setVerticalGroup(
jPanel4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel4Layout.createSequentialGroup()
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(jPanel4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton2)
.addComponent(jButton3)))
);
jMenu1.setText("File");
jMenuItem1.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_F4, java.awt.event.InputEvent.ALT_MASK));
jMenuItem1.setText("Exit");
jMenu1.add(jMenuItem1);
jMenuBar1.add(jMenu1);
jMenu2.setText("Edit");
jMenuItem2.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_X, java.awt.event.InputEvent.CTRL_MASK));
jMenuItem2.setText("Cut");
jMenu2.add(jMenuItem2);
jMenuItem3.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_C, java.awt.event.InputEvent.CTRL_MASK));
jMenuItem3.setText("Copy");
jMenu2.add(jMenuItem3);
jMenuItem4.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_V, java.awt.event.InputEvent.CTRL_MASK));
jMenuItem4.setText("Paste");
jMenu2.add(jMenuItem4);
jMenu2.add(jSeparator1);
jMenuItem5.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_DELETE, 0));
jMenuItem5.setText("Delete");
jMenu2.add(jMenuItem5);
jMenuBar1.add(jMenu2);
setJMenuBar(jMenuBar1);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jPanel4, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jPanel3, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(layout.createSequentialGroup()
.addComponent(jPanel3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jPanel4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addContainerGap())
);
pack();
}// </editor-fold>
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
/**
* #param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new CryptUI().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JComboBox jComboBox1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JMenu jMenu1;
private javax.swing.JMenu jMenu2;
private javax.swing.JMenuBar jMenuBar1;
private javax.swing.JMenuItem jMenuItem1;
private javax.swing.JMenuItem jMenuItem2;
private javax.swing.JMenuItem jMenuItem3;
private javax.swing.JMenuItem jMenuItem4;
private javax.swing.JMenuItem jMenuItem5;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JPanel jPanel3;
private javax.swing.JPanel jPanel4;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JPopupMenu.Separator jSeparator1;
private javax.swing.JSpinner jSpinner1;
private javax.swing.JTextArea jTextArea1;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
// End of variables declaration
}

You can do it with next code in your actionPerformed() method:
AnotherFrame f = new AnotherFrame();
f.setNeededData(/*object*/);
f.pack();
f.setVisible(true);
AnotherFrame is JFrame which you want to create and show.
setNeededData(/*object*/) is method of your frame to transfer neededData.
and last 2 lines show it.

On the click of button you can simply create the object of the JFrame which you want to open and it will load the components in it (as you must be calling initComponents() method in the default constructor).
For passing the parameters from one frame to another you can simply create a POJO and set its properties in the current frame and pass this object to the destination frame while creating the object.
I hope this helps..

On button click ActionEvent:
Create the object of class which has the frame creation function and using that object call the newFrame function :
newframe frm = new newframe(this);
frm.NewFrame();
Suppose this function is in package package org.xyz.frame;
public void NewFrame(){
JFrame frame = new JFrame("Frame2");
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
try
{
for (LookAndFeelInfo info : UIManager
.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (Exception e) {
e.printStackTrace();
}
JPanel panel = new JPanel();
frame.getContentPane().add(BorderLayout.CENTER, panel);
frame.setLocationRelativeTo(ui);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
frame.setResizable(false);
}

Losing JDialog title when hiding panel (Java)

EDIT:
Of course I find an answer 2 min after I post a question.
How to completely remove an icon from JDialog?
But follow-up; anyone knows the way to make consistent icon state when changing resizable property?
PS. I can't answer my own question for 8 more hours.
ORIGINAL QUESTION:
To put it short, here is an stripped down example code which has a problem.
When I click on "Details" (WinXP x32 java 1.6) jPanel2 changes visibility state and together with jPanel2 for some reason the dialog icon is removed. Quite curious.
Anyone knows why the icon is hidden together with JPanel?
Code is generated by NetBeans 7.1, only slightly adapted to be self-contained.
Thanks in advance for help!
import java.awt.Frame;
import javax.swing.Icon;
import javax.swing.JOptionPane;
import javax.swing.UIManager;
public class TestHide extends javax.swing.JDialog {
private static final long serialVersionUID = 1L;
public TestHide(java.awt.Frame parent, boolean modal) {
super(parent, modal);
initComponents();
jPanel2.setVisible(false);
pack();
}
private void initComponents() {
jPanel1 = new javax.swing.JPanel();
lblIcon = new javax.swing.JLabel();
jScrollPane1 = new javax.swing.JScrollPane();
taShortMsg = new javax.swing.JTextArea();
jPanel2 = new javax.swing.JPanel();
jPanel3 = new javax.swing.JPanel();
jLabel3 = new javax.swing.JLabel();
jSeparator1 = new javax.swing.JSeparator();
jSeparator2 = new javax.swing.JSeparator();
jPanel4 = new javax.swing.JPanel();
jSeparator3 = new javax.swing.JSeparator();
jScrollPane2 = new javax.swing.JScrollPane();
taDetails = new javax.swing.JTextArea();
btnOk = new javax.swing.JButton();
btnTgDetails = new javax.swing.JToggleButton();
setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
lblIcon.setText(""); // NOI18N
jScrollPane1.setBorder(null);
taShortMsg.setBackground(getBackground());
taShortMsg.setColumns(20);
taShortMsg.setEditable(false);
taShortMsg.setFont(lblIcon.getFont());
taShortMsg.setLineWrap(true);
taShortMsg.setRows(5);
taShortMsg.setBorder(null);
taShortMsg.setCursor(getCursor());
taShortMsg.setOpaque(false);
jScrollPane1.setViewportView(taShortMsg);
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGroup(
jPanel1Layout.createSequentialGroup().addContainerGap().addComponent(lblIcon).addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 399, Short.MAX_VALUE).addContainerGap()));
jPanel1Layout.setVerticalGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGroup(
jPanel1Layout
.createSequentialGroup()
.addContainerGap()
.addGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup().addComponent(lblIcon).addContainerGap(54, Short.MAX_VALUE))
.addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.TRAILING))));
jPanel2.addComponentListener(new java.awt.event.ComponentAdapter() {
public void componentHidden(java.awt.event.ComponentEvent evt) {
jPanel2ComponentHidden(evt);
}
public void componentShown(java.awt.event.ComponentEvent evt) {
jPanel2ComponentShown(evt);
}
});
jLabel3.setText("jLabel3"); // NOI18N
javax.swing.GroupLayout jPanel3Layout = new javax.swing.GroupLayout(jPanel3);
jPanel3.setLayout(jPanel3Layout);
jPanel3Layout.setHorizontalGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGroup(
jPanel3Layout.createSequentialGroup().addContainerGap().addComponent(jSeparator1).addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED).addComponent(jLabel3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED).addComponent(jSeparator2).addContainerGap()));
jPanel3Layout
.setVerticalGroup(jPanel3Layout
.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(
javax.swing.GroupLayout.Alignment.TRAILING,
jPanel3Layout
.createSequentialGroup()
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(
jPanel3Layout
.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jSeparator1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.PREFERRED_SIZE, 10,
javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jSeparator2, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.PREFERRED_SIZE, 10,
javax.swing.GroupLayout.PREFERRED_SIZE))).addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 22, javax.swing.GroupLayout.PREFERRED_SIZE));
javax.swing.GroupLayout jPanel4Layout = new javax.swing.GroupLayout(jPanel4);
jPanel4.setLayout(jPanel4Layout);
jPanel4Layout.setHorizontalGroup(jPanel4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGroup(
jPanel4Layout.createSequentialGroup().addContainerGap().addComponent(jSeparator3).addContainerGap()));
jPanel4Layout.setVerticalGroup(jPanel4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGroup(javax.swing.GroupLayout.Alignment.TRAILING,
jPanel4Layout.createSequentialGroup().addContainerGap().addComponent(jSeparator3, javax.swing.GroupLayout.DEFAULT_SIZE, 0, Short.MAX_VALUE)));
jScrollPane2.setBorder(null);
taDetails.setColumns(20);
taDetails.setEditable(false);
taDetails.setFont(lblIcon.getFont());
taDetails.setRows(5);
jScrollPane2.setViewportView(taDetails);
javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);
jPanel2Layout.setHorizontalGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(jPanel2Layout.createSequentialGroup().addContainerGap().addComponent(jScrollPane2).addContainerGap())
.addComponent(jPanel4, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE));
jPanel2Layout.setVerticalGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGroup(
javax.swing.GroupLayout.Alignment.TRAILING,
jPanel2Layout.createSequentialGroup()
.addComponent(jPanel3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED).addComponent(jScrollPane2, javax.swing.GroupLayout.DEFAULT_SIZE, 129, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jPanel4, javax.swing.GroupLayout.PREFERRED_SIZE, 8, javax.swing.GroupLayout.PREFERRED_SIZE)));
btnOk.setText("OK"); // NOI18N
btnOk.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnOkActionPerformed(evt);
}
});
btnTgDetails.setText("Details"); // NOI18N
btnTgDetails.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnTgDetailsActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(layout
.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(
layout.createSequentialGroup().addGap(0, 0, Short.MAX_VALUE).addComponent(btnOk, javax.swing.GroupLayout.PREFERRED_SIZE, 83, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(btnTgDetails, javax.swing.GroupLayout.PREFERRED_SIZE, 83, javax.swing.GroupLayout.PREFERRED_SIZE).addContainerGap())
.addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE));
layout.setVerticalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGroup(
layout
.createSequentialGroup()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addComponent(btnTgDetails)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup().addComponent(btnOk).addContainerGap()))));
pack();
}
private void btnTgDetailsActionPerformed(java.awt.event.ActionEvent evt) {
if (jPanel2.isVisible()) {
btnTgDetails.setText("Details>>");
} else {
btnTgDetails.setText("Details<<");
}
jPanel2.setVisible(!jPanel2.isVisible());
this.validate();
this.pack();
}
private void btnOkActionPerformed(java.awt.event.ActionEvent evt) {
dispose();
}
private void jPanel2ComponentHidden(java.awt.event.ComponentEvent evt) {
setResizable(false);
}
private void jPanel2ComponentShown(java.awt.event.ComponentEvent evt) {
setResizable(true);
}
public static void main(String args[]) {
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(TestHide.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(TestHide.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(TestHide.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(TestHide.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
showMessageDialog(null, "I am title", "Small message...", "long\n\nlong\nmessage", JOptionPane.INFORMATION_MESSAGE);
}
public static void showMessageDialog(Frame parent, String title, String shortMessage, String longMessage, int type) {
TestHide md = new TestHide(parent, true);
Icon icon = null;
switch (type) {
case JOptionPane.ERROR_MESSAGE:
icon = UIManager.getIcon("OptionPane.errorIcon");
break;
case JOptionPane.INFORMATION_MESSAGE:
icon = UIManager.getIcon("OptionPane.informationIcon");
break;
case JOptionPane.WARNING_MESSAGE:
icon = UIManager.getIcon("OptionPane.warningIcon");
break;
}
md.setTitle(title);
md.lblIcon.setIcon(icon);
md.taShortMsg.setText(shortMessage);
if (longMessage == null) {
md.btnTgDetails.setVisible(false);
} else {
md.taDetails.setText(longMessage);
md.taDetails.setCaretPosition(0);
}
md.pack();
md.setVisible(true);
}
private javax.swing.JButton btnOk;
private javax.swing.JToggleButton btnTgDetails;
private javax.swing.JLabel jLabel3;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JPanel jPanel3;
private javax.swing.JPanel jPanel4;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JScrollPane jScrollPane2;
private javax.swing.JSeparator jSeparator1;
private javax.swing.JSeparator jSeparator2;
private javax.swing.JSeparator jSeparator3;
private javax.swing.JLabel lblIcon;
private javax.swing.JTextArea taDetails;
private javax.swing.JTextArea taShortMsg;
}

If you put the following statement in a constructor like
public TestHide(java.awt.Frame parent, boolean modal) {
super(parent, modal);
setIconImage(Toolkit.getDefaultToolkit().getImage("images\\white_title.png"));
initComponents();
jPanel2.setVisible(false);
pack(); }
then the icon on title bar appear constantly.

adding data to a combobox with data from sql - java

I'm starting to program in Java with Sql.
The problem Im having is that when I try to fill a combobox with data that I have in a table in sql, it doesn't work and I don't know why.
Here is what I have tried so far:
public class Proveedores extends javax.swing.JFrame
{
Connection cnn;
ConexionesBaseDeDatos conexiones = new ConexionesBaseDeDatos();
public Proveedores() {
initComponents();
}
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jLabel5 = new javax.swing.JLabel();
txtNombreProveedor = new javax.swing.JTextField();
txtDireccionProveedor = new javax.swing.JTextField();
txtMailProveedor = new javax.swing.JTextField();
cmbProvinciasProveedores = new javax.swing.JComboBox();
btnCrearProveedor = new javax.swing.JButton();
btnModificarProveedor = new javax.swing.JButton();
btnDesabilitarProveedor = new javax.swing.JButton();
txtTelefonoProveedor = new javax.swing.JFormattedTextField();
jScrollPane1 = new javax.swing.JScrollPane();
listProveedores = new javax.swing.JList();
btnAceptar = new javax.swing.JButton();
btnGuardarCambios = new javax.swing.JButton();
btnDesabilitar = new javax.swing.JButton();
btnCancelar = new javax.swing.JButton();
jMenuBar1 = new javax.swing.JMenuBar();
jMenu1 = new javax.swing.JMenu();
jMenuItem1 = new javax.swing.JMenuItem();
jMenuItem2 = new javax.swing.JMenuItem();
jMenuItem3 = new javax.swing.JMenuItem();
jMenuItem4 = new javax.swing.JMenuItem();
jMenuItem5 = new javax.swing.JMenuItem();
jMenuItem6 = new javax.swing.JMenuItem();
jMenuItem7 = new javax.swing.JMenuItem();
jMenuItem10 = new javax.swing.JMenuItem();
jMenuItem11 = new javax.swing.JMenuItem();
jMenu3 = new javax.swing.JMenu();
jMenuItem9 = new javax.swing.JMenuItem();
jMenu4 = new javax.swing.JMenu();
jMenuItem8 = new javax.swing.JMenuItem();
jMenu2 = new javax.swing.JMenu();
jMenuItem12 = new javax.swing.JMenuItem();
jMenu5 = new javax.swing.JMenu();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
addWindowListener(new java.awt.event.WindowAdapter() {
public void windowActivated(java.awt.event.WindowEvent evt) {
formWindowActivated(evt);
}
});
jLabel1.setText("Nombre");
jLabel2.setText("Teléfono");
jLabel3.setText("Dirección");
jLabel4.setText("Mail");
jLabel5.setText("Provincia");
btnCrearProveedor.setText("Crear Proveedor");
btnModificarProveedor.setText("Modificar Proveedor");
btnDesabilitarProveedor.setText("Deshabilitar Proveedor");
txtTelefonoProveedor.setCursor(new java.awt.Cursor(java.awt.Cursor.TEXT_CURSOR));
listProveedores.setEnabled(false);
listProveedores.setVisibleRowCount(13);
jScrollPane1.setViewportView(listProveedores);
btnAceptar.setText("Aceptar");
btnGuardarCambios.setText("Guardar Cambios");
btnGuardarCambios.setEnabled(false);
btnDesabilitar.setText("Desabilitar");
btnDesabilitar.setEnabled(false);
btnCancelar.setText("Cancelar");
jMenu1.setText("File");
jMenuItem1.setText("Proveedores");
jMenu1.add(jMenuItem1);
jMenuItem2.setText("Clientes");
jMenu1.add(jMenuItem2);
jMenuItem3.setText("Modelos");
jMenu1.add(jMenuItem3);
jMenuItem4.setText("Eventos");
jMenu1.add(jMenuItem4);
jMenuItem5.setText("Subastas");
jMenu1.add(jMenuItem5);
jMenuItem6.setText("Compras");
jMenu1.add(jMenuItem6);
jMenuItem7.setText("Ventas");
jMenu1.add(jMenuItem7);
jMenuItem10.setText("Colecciones");
jMenu1.add(jMenuItem10);
jMenuItem11.setText("Lineas");
jMenu1.add(jMenuItem11);
jMenu3.setText("Productos");
jMenuItem9.setText("Tipos de productos");
jMenu3.add(jMenuItem9);
jMenu1.add(jMenu3);
jMenu4.setText("Insumos");
jMenuItem8.setText("Tipos de insumos");
jMenu4.add(jMenuItem8);
jMenu1.add(jMenu4);
jMenuBar1.add(jMenu1);
jMenu2.setText("Ayuda");
jMenuItem12.setText("Acerca de...");
jMenu2.add(jMenuItem12);
jMenuBar1.add(jMenu2);
jMenu5.setText("Salir");
jMenuBar1.add(jMenu5);
setJMenuBar(jMenuBar1);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(40, 40, 40)
.addComponent(btnCrearProveedor)
.addGap(97, 97, 97)
.addComponent(btnModificarProveedor)
.addGap(104, 104, 104)
.addComponent(btnDesabilitarProveedor)
.addContainerGap(64, Short.MAX_VALUE))
.addGroup(layout.createSequentialGroup()
.addGap(67, 67, 67)
.addComponent(btnAceptar)
.addGap(52, 52, 52)
.addComponent(btnCancelar)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 92, Short.MAX_VALUE)
.addComponent(btnGuardarCambios)
.addGap(62, 62, 62)
.addComponent(btnDesabilitar)
.addGap(71, 71, 71))
.addGroup(layout.createSequentialGroup()
.addGap(22, 22, 22)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel5)
.addGap(18, 18, 18)
.addComponent(cmbProvinciasProveedores, javax.swing.GroupLayout.PREFERRED_SIZE, 120, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel2)
.addGap(18, 18, 18)
.addComponent(txtTelefonoProveedor))
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
.addComponent(jLabel4)
.addGap(42, 42, 42)
.addComponent(txtMailProveedor, javax.swing.GroupLayout.PREFERRED_SIZE, 120, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel3)
.addComponent(jLabel1))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(txtNombreProveedor)
.addComponent(txtDireccionProveedor, javax.swing.GroupLayout.DEFAULT_SIZE, 117, Short.MAX_VALUE))))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 137, Short.MAX_VALUE)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 312, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(36, 36, 36))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(20, 20, 20)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(btnCrearProveedor, javax.swing.GroupLayout.PREFERRED_SIZE, 34, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btnModificarProveedor, javax.swing.GroupLayout.PREFERRED_SIZE, 34, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(layout.createSequentialGroup()
.addGap(1, 1, 1)
.addComponent(btnDesabilitarProveedor, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(50, 50, 50)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(txtNombreProveedor, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(27, 27, 27)
.addComponent(jLabel3))
.addGroup(layout.createSequentialGroup()
.addGap(22, 22, 22)
.addComponent(txtDireccionProveedor, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGap(20, 20, 20)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(3, 3, 3)
.addComponent(jLabel5))
.addComponent(cmbProvinciasProveedores, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(txtTelefonoProveedor, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(21, 21, 21)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(3, 3, 3)
.addComponent(jLabel4))
.addComponent(txtMailProveedor, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(35, 35, 35))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGap(36, 36, 36)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 223, Short.MAX_VALUE)
.addGap(27, 27, 27)))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(btnDesabilitar)
.addComponent(btnAceptar)
.addComponent(btnCancelar)
.addComponent(btnGuardarCambios))
.addGap(64, 64, 64))
);
pack();
}// </editor-fold>
private void formWindowActivated(java.awt.event.WindowEvent evt) {
deshabilitarCampos();
if (conexiones.conectaralabase())
cargarComboProvincias();
}
public static void main()
{
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Proveedores().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton btnAceptar;
private javax.swing.JButton btnCancelar;
private javax.swing.JButton btnCrearProveedor;
private javax.swing.JButton btnDesabilitar;
private javax.swing.JButton btnDesabilitarProveedor;
private javax.swing.JButton btnGuardarCambios;
private javax.swing.JButton btnModificarProveedor;
private javax.swing.JComboBox cmbProvinciasProveedores;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JMenu jMenu1;
private javax.swing.JMenu jMenu2;
private javax.swing.JMenu jMenu3;
private javax.swing.JMenu jMenu4;
private javax.swing.JMenu jMenu5;
private javax.swing.JMenuBar jMenuBar1;
private javax.swing.JMenuItem jMenuItem1;
private javax.swing.JMenuItem jMenuItem10;
private javax.swing.JMenuItem jMenuItem11;
private javax.swing.JMenuItem jMenuItem12;
private javax.swing.JMenuItem jMenuItem2;
private javax.swing.JMenuItem jMenuItem3;
private javax.swing.JMenuItem jMenuItem4;
private javax.swing.JMenuItem jMenuItem5;
private javax.swing.JMenuItem jMenuItem6;
private javax.swing.JMenuItem jMenuItem7;
private javax.swing.JMenuItem jMenuItem8;
private javax.swing.JMenuItem jMenuItem9;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JList listProveedores;
private javax.swing.JTextField txtDireccionProveedor;
private javax.swing.JTextField txtMailProveedor;
private javax.swing.JTextField txtNombreProveedor;
private javax.swing.JFormattedTextField txtTelefonoProveedor;
// End of variables declaration
private void deshabilitarCampos()
{
txtNombreProveedor.setEnabled(false);
txtDireccionProveedor.setEnabled(false);
txtMailProveedor.setEnabled(false);
btnAceptar.setEnabled(false);
btnCancelar.setEnabled(false);
btnDesabilitar.setEnabled(false);
btnGuardarCambios.setEnabled(false);
cmbProvinciasProveedores.setEnabled(false);
listProveedores.setEnabled(false);
}
private void habilitarCamposBtnCrearProveedor()
{
btnAceptar.setEnabled(true);
btnCancelar.setEnabled(true);
cmbProvinciasProveedores.setEnabled(true);
listProveedores.setEnabled(true);
txtDireccionProveedor.setEnabled(true);
txtMailProveedor.setEnabled(true);
txtNombreProveedor.setEnabled(true);
}
private void habilitarCamposBtnModificarProveedor()
{
btnAceptar.setEnabled(false);
btnCancelar.setEnabled(true);
cmbProvinciasProveedores.setEnabled(true);
listProveedores.setEnabled(true);
txtDireccionProveedor.setEnabled(true);
txtMailProveedor.setEnabled(true);
txtNombreProveedor.setEnabled(true);
btnGuardarCambios.setEnabled(true);
btnDesabilitarProveedor.setEnabled(false);
btnDesabilitar.setEnabled(false);
btnCrearProveedor.setEnabled(false);
}
private void limpiarCampos()
{
cmbProvinciasProveedores.setSelectedIndex(-1);
txtDireccionProveedor.setText("");
txtMailProveedor.setText("");
txtNombreProveedor.setText("");
}
public void habilitarbtnCrearProveedor()
{
btnAceptar.setEnabled(true);
btnCancelar.setEnabled(true);
cmbProvinciasProveedores.setEnabled(true);
txtDireccionProveedor.setEnabled(true);
txtMailProveedor.setEnabled(true);
txtNombreProveedor.setEnabled(true);
txtTelefonoProveedor.setEnabled(true);
}
private void cargarComboProvincias()
{
Statement sql;
ResultSet datos;
boolean seguir;
Provincias provinciaActual;
try
{
sql = cnn.createStatement();
datos = sql.executeQuery("SELECT * FROM provincias WHERE id_provincia IS NOT NULL");
seguir = datos.next();
while (seguir)
{
provinciaActual = new Provincias();
provinciaActual.setNombre_provincia(datos.getString("nombre_provincia"));
provinciaActual.toString();
cmbProvinciasProveedores.addItem(provinciaActual);
seguir = datos.next();
}
}
catch (Exception e)
{
JOptionPane.showMessageDialog(null,e.getMessage() + "error en cargarComboProvincias");
e.printStackTrace();
}
}
}
and here is where i make the connection with the database:
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import javax.swing.JOptionPane;
public class ConexionesBaseDeDatos
{
Connection cnn;
public boolean conectaralabase()
{
String connString;
try
{
Class.forName ("com.microsoft.sqlserver.jdbc.SQLServerDriver");
connString = ("jdbc:sqlserver://GILLOPEZ:1433;database=DOLLS;Trusted_Connection=True");
cnn = DriverManager.getConnection (connString,"sa","1q2w3e4r");
}
catch(Exception e)
{
System.out.println( e.getMessage() + "Error en conectaralabase()");
return false;
}
return true;
}
}
Any help is appreciated. Thanks.

you have to three choises inside Resulset loop
1) put data to the String[] Array
`String[] items = {"test1", "test2", "test3"};
JComboBox combo = new JComboBox(items);`
2) put data to the Vector 1D Vector
Vector<String> v1 = new Vector<String>();
v1.add("item1");
v1.add("item2");
v1.add("item3");
JComboBox combo = new JComboBox(v1);
3) put data to the ComboBoxModel
DefaultComboBoxModel model = new DefaultComboBoxModel();
model.add("item1");
model.add("item2");
model.add("item3");
JComboBox combo = new JComboBox();
combo.setModel(model);
but please before anything reads
JComboBox Tutorial
JDBC Basic
tons examples here

Getting Exception connecting Yahoo server

package session;
import java.io.FileWriter;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import javax.swing.JOptionPane;
import org.openymsg.network.FireEvent;
import org.openymsg.network.Session;
import org.openymsg.network.SessionState;
import org.openymsg.network.event.SessionListener;
public class BotGUI extends javax.swing.JFrame implements SessionListener{
/** Creates new form BotGUI */
FileWriter fw;
DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
public BotGUI() {
initComponents();
}
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jPanel1 = new javax.swing.JPanel();
jPanel2 = new javax.swing.JPanel();
jPanel3 = new javax.swing.JPanel();
jLabel1 = new javax.swing.JLabel();
jPanel4 = new javax.swing.JPanel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
uNameTextField = new javax.swing.JTextField();
uPassPasswordField = new javax.swing.JPasswordField();
jButton1 = new javax.swing.JButton();
jMenuBar1 = new javax.swing.JMenuBar();
jMenu1 = new javax.swing.JMenu();
jMenuItem1 = new javax.swing.JMenuItem();
jMenuItem2 = new javax.swing.JMenuItem();
jMenuItem3 = new javax.swing.JMenuItem();
jMenu2 = new javax.swing.JMenu();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jPanel2.setLayout(new org.netbeans.lib.awtextra.AbsoluteLayout());
jPanel3.setBackground(new java.awt.Color(51, 51, 51));
jLabel1.setBackground(new java.awt.Color(0, 0, 255));
jLabel1.setFont(new java.awt.Font("Tahoma", 1, 12));
jLabel1.setForeground(new java.awt.Color(255, 255, 255));
jLabel1.setText("Yahoo Login Panel");
javax.swing.GroupLayout jPanel3Layout = new javax.swing.GroupLayout(jPanel3);
jPanel3.setLayout(jPanel3Layout);
jPanel3Layout.setHorizontalGroup(
jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel3Layout.createSequentialGroup()
.addGap(38, 38, 38)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 140, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(532, Short.MAX_VALUE))
);
jPanel3Layout.setVerticalGroup(
jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 30, Short.MAX_VALUE)
);
jPanel2.add(jPanel3, new org.netbeans.lib.awtextra.AbsoluteConstraints(0, 0, 710, 30));
jPanel4.setLayout(new org.netbeans.lib.awtextra.AbsoluteLayout());
jLabel2.setText("Username");
jPanel4.add(jLabel2, new org.netbeans.lib.awtextra.AbsoluteConstraints(30, 20, 60, 20));
jLabel3.setText("Password");
jPanel4.add(jLabel3, new org.netbeans.lib.awtextra.AbsoluteConstraints(270, 20, 60, 20));
jPanel4.add(uNameTextField, new org.netbeans.lib.awtextra.AbsoluteConstraints(100, 20, 140, 20));
jPanel4.add(uPassPasswordField, new org.netbeans.lib.awtextra.AbsoluteConstraints(330, 20, 140, -1));
jButton1.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N
jButton1.setText("Login");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jPanel4.add(jButton1, new org.netbeans.lib.awtextra.AbsoluteConstraints(490, 15, 90, -1));
jPanel2.add(jPanel4, new org.netbeans.lib.awtextra.AbsoluteConstraints(0, 30, 710, 60));
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, 135, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(293, Short.MAX_VALUE))
);
jMenu1.setText("Option");
jMenuItem1.setText("Logout");
jMenu1.add(jMenuItem1);
jMenuItem2.setText("Load CSV");
jMenu1.add(jMenuItem2);
jMenuItem3.setText("Exit");
jMenu1.add(jMenuItem3);
jMenuBar1.add(jMenu1);
jMenu2.setText("Help");
jMenuBar1.add(jMenu2);
setJMenuBar(jMenuBar1);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);
pack();
}// </editor-fold>
public void handleConnectionClosed() {
connectionClosed = true;
loggedIn = false;
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
if(!uNameTextField.getText().equals("") && !uPassPasswordField.getText().equals("")){
Yahoo_login(uNameTextField.getText(),uPassPasswordField.getText());
}else{
JOptionPane.showMessageDialog(null, "Plese Enter User Id and Password");
}
}
Session yahooMessengerSession;
MySessionListener mySessionListener;
boolean loggedIn = false;
boolean connectionClosed = false;
public void Yahoo_login(String uName, String pass) {
connectionClosed = false;
if (loggedIn == false) {
yahooMessengerSession = new Session();
mySessionListener = new MySessionListener(this);
yahooMessengerSession.addSessionListener(mySessionListener);
try {
if ((uName.equals("")) || (pass.equals("")))
{
System.out.println("User name/password is blank");
}
else{
//initialized a file writer for log file
System.out.println("Login start........");
yahooMessengerSession.login(uName, pass, true);
//checks whether user was succesful in login in
if (yahooMessengerSession!=null && yahooMessengerSession.getSessionStatus()== SessionState.LOGGED_ON) {
//this loop is reached when the user has been successfully logined
System.out.println("Login Success");
fw.write("User (" + uName + ") logged in at : " + dateFormat.format("09.05.10") + " \n");
fw.close();
} else {
yahooMessengerSession.reset();
}
}
} catch(Exception e){ }
}
}
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new BotGUI().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JMenu jMenu1;
private javax.swing.JMenu jMenu2;
private javax.swing.JMenuBar jMenuBar1;
private javax.swing.JMenuItem jMenuItem1;
private javax.swing.JMenuItem jMenuItem2;
private javax.swing.JMenuItem jMenuItem3;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JPanel jPanel3;
private javax.swing.JPanel jPanel4;
private javax.swing.JTextField uNameTextField;
private javax.swing.JPasswordField uPassPasswordField;
// End of variables declaration
public void dispatch(FireEvent fe) {
throw new UnsupportedOperationException("Not supported yet.");
}
}
===========================================================================================
i have to find the error
SEVERE: error during the dispatch of event: FireEvent [org.openymsg.network.event.SessionListEvent to:null from:null message:null timestamp:0 status:0 list type:Friends size:2 LIST]
java.lang.UnsupportedOperationException: Not supported yet.
at yahoomessangerbot.MySessionListener.dispatch(MySessionListener.java:131)
at org.openymsg.network.EventDispatcher.runEventNOW(EventDispatcher.java:133)
at org.openymsg.network.EventDispatcher.run(EventDispatcher.java:114)

http://jymsg9.sourceforge.net/docs/ymsg/network/Session.html
This will help u..

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Java is a programming language and computing platform first released by Sun Microsystems in 1995.

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