How can I pass a variable from one JFrame To Another JFrame

How can I pass a variable from one JFrame To Another JFrame - java

I'm new to Java. I tried to find solution by myself but am not sure how to proceed.
I have 2 Jframes (JF1,JF2) , and I need to pass a variable from the JF1 to JF2
This is the code for JF1 : Note : i need the value x , value x get it from JTextfeild.
Can any one help me please
/*
* JF1.java
*
* Created on 04 مايو, 2012, 09:01 م
*/
package finalpro;
import java.io.BufferedInputStream;
import javax.swing.JOptionPane;
/**
*
* #author OmaR
*/
public class JF1 extends javax.swing.JFrame {
/** Creates new form JF1 */
public JF1() {
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.
*/
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
JB1 = new javax.swing.JButton();
JB3 = new javax.swing.JButton();
JB2 = new javax.swing.JButton();
jLabel2 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel1.setText("Online Test Creater");
JB1.setText("Make");
JB1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
JB1ActionPerformed(evt);
}
});
JB3.setText("Quit");
JB3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
JB3ActionPerformed(evt);
}
});
JB2.setText("Reset");
JB2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
JB2ActionPerformed(evt);
}
});
jLabel2.setText("Number Of Question");
jTextField1.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
jTextField1MouseClicked(evt);
}
});
jButton1.setText("Main");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
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(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 127, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(43, 43, 43)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 64, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 50, Short.MAX_VALUE))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 128, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(34, 34, 34)))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(JB2)
.addComponent(JB3)
.addComponent(JB1)
.addComponent(jButton1))
.addGap(30, 30, 30))
);
layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {JB1, JB2, JB3, jButton1});
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(19, 19, 19)
.addComponent(jLabel1))
.addGroup(layout.createSequentialGroup()
.addGap(31, 31, 31)
.addComponent(JB1)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel2)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jButton1))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(JB2)
.addGap(18, 18, 18)
.addComponent(JB3)))
.addContainerGap(37, Short.MAX_VALUE))
);
layout.linkSize(javax.swing.SwingConstants.VERTICAL, new java.awt.Component[] {JB1, JB2, JB3, jButton1});
pack();
}// </editor-fold>
private void JB3ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
System.exit(0);
}
private void JB2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
jTextField1.setText("");
}
private void JB1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
JF1 JFBU = new JF1() ;
JF2 JCreate = new JF2();
this.setVisible(false);
int z = Integer.parseInt(jTextField1.getText());
if (z == 0)
{
JOptionPane.showMessageDialog(null, " You Enter 0 Please write anumber ");
}
else
{
JCreate.setVisible(true);
}
}
private void jTextField1MouseClicked(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:
JOptionPane.showMessageDialog(null, "The Max Number of Questions Is 10");
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
JFmain JFm = new JFmain();
JFm.setVisible(true);
this.setVisible(false);
}
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new JF1().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton JB1;
private javax.swing.JButton JB2;
private javax.swing.JButton JB3;
private javax.swing.JButton jButton1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JTextField jTextField1;
// End of variables declaration
}
I have JF2, and I need to pass the Var z on it.

Create constructor with parameter int z:
public class JF2 extends JFrame {
private int z;
public void setZ(int z) {
this.z = z;
}
public int getZ() {
return z;
}
public JF2(int z) {
this.z = z;
}
}
And pass the variable z when you create the JF2 -> JF2 jCreate = new JF2(z); or using setter jCreate.setZ(z);

Related

Radio Button In Java

I just want to ask if I can change the text in radio button.
For example:
here in the picture if I put a number, it will show the number factors at the radio button. ( the factor 1 will just show in Jlabel and the rest of the factor will show at the Radio button) the problem part at the private void checkbtnActionPerformed(java.awt.event.ActionEvent evt) I already tried to use .setText() but I think this will not work for radio button or button group. Is there another way to do that
public class primefactor extends javax.swing.JFrame {
/**
* Creates new form primefactor
*/
public primefactor() {
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() {
numfactorgr = new javax.swing.ButtonGroup();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
checkbtn = new javax.swing.JButton();
cleatbtn = new javax.swing.JButton();
inspectbtn = new javax.swing.JButton();
num1 = new javax.swing.JLabel();
numdis = new javax.swing.JLabel();
numtxt = new javax.swing.JTextField();
primeyn = new javax.swing.JLabel();
numfactors1 = new javax.swing.JRadioButton();
numfactors2 = new javax.swing.JRadioButton();
numfactors3 = new javax.swing.JRadioButton();
numfactors4 = new javax.swing.JRadioButton();
numfactors = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel1.setText("NUMBER::");
jLabel2.setText("FACTORS::");
jLabel3.setText("PRIME:");
checkbtn.setText("CHECK");
checkbtn.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
checkbtnActionPerformed(evt);
}
});
cleatbtn.setText("CLEAR");
cleatbtn.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
cleatbtnActionPerformed(evt);
}
});
inspectbtn.setText("INSPECT");
inspectbtn.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
inspectbtnActionPerformed(evt);
}
});
numdis.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
numtxt.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
numtxtActionPerformed(evt);
}
});
numfactorgr.add(numfactors1);
numfactorgr.add(numfactors2);
numfactorgr.add(numfactors3);
numfactorgr.add(numfactors4);
numfactors.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
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(checkbtn, javax.swing.GroupLayout.PREFERRED_SIZE, 190, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 138, Short.MAX_VALUE)
.addComponent(cleatbtn, javax.swing.GroupLayout.PREFERRED_SIZE, 192, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(num1)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(numdis, javax.swing.GroupLayout.PREFERRED_SIZE, 34, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED))
.addGroup(layout.createSequentialGroup()
.addGap(94, 94, 94)
.addComponent(numfactors, javax.swing.GroupLayout.PREFERRED_SIZE, 184, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.addComponent(inspectbtn))
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(primeyn)
.addGap(0, 0, Short.MAX_VALUE))
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(numtxt))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGap(0, 0, Short.MAX_VALUE)
.addComponent(numfactors1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(numfactors2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(numfactors3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(numfactors4)))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(23, 23, 23)
.addComponent(jLabel1))
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(numtxt, javax.swing.GroupLayout.PREFERRED_SIZE, 29, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGap(30, 30, 30)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(numdis)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(inspectbtn)
.addComponent(num1)
.addComponent(numfactors)))
.addGap(28, 28, 28)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(primeyn))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 3, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(numfactors1)
.addComponent(numfactors2)
.addComponent(numfactors3)
.addComponent(numfactors4))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(checkbtn)
.addComponent(cleatbtn))
.addContainerGap())
);
pack();
}// </editor-fold>
private void numtxtActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void checkbtnActionPerformed(java.awt.event.ActionEvent evt) {
String str = numtxt.getText();
int num = Integer.parseInt(str);
int flag = 0;
numdis.setText(str);
num1.setText("1");
for (int i=2;i<num;i++){
if (num%i ==0){
flag =1;
num1.setText("1");
numfactors.setText( numfactors.getText()+i+" "); // at this part it will display the radio button with the number factors. (but I use first the jlabel numfactors to show the number factors)
}
}
if (flag == 0){
primeyn.setText("Yes");
}
else{
primeyn.setText(primeyn.getText()+"No");
}
}
private void cleatbtnActionPerformed(java.awt.event.ActionEvent evt) {
numtxt.setText("");
num1.setText("");
numdis.setText("");
numfactors.setText("");
primeyn.setText("");
}
private void inspectbtnActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
/**
* #param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
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(primefactor.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(primefactor.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(primefactor.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(primefactor.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new primefactor().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton checkbtn;
private javax.swing.JButton cleatbtn;
private javax.swing.JButton inspectbtn;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel num1;
private javax.swing.JLabel numdis;
private javax.swing.ButtonGroup numfactorgr;
private javax.swing.JLabel numfactors;
private javax.swing.JRadioButton numfactors1;
private javax.swing.JRadioButton numfactors2;
private javax.swing.JRadioButton numfactors3;
private javax.swing.JRadioButton numfactors4;
private javax.swing.JTextField numtxt;
private javax.swing.JLabel primeyn;
// End of variables declaration
}

How do i add data from jTextfield into jTable? i dont know why i fail. please take a look

so i followed a video of making a cash register for groceries on youtube. i followed it step by step, carefully. but when it comes to getText into the jTable1 row, like, when i pressed jButton1 it doesnt work as the video shows.
so, i copied the script to my project out of desperation to see if it works, but it doesnt. then when i tried it on the original file with original project. it works. so try to copy all of it. in its entirety to my project. there's no difference in the coding, and the variables, and the buttons that's been declared or whatever it is called in english.
still doesnt works.
/*
* 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 kasiraldo;
import static java.awt.event.KeyEvent.VK_BACK_SPACE;
import java.util.Vector;
import javax.swing.table.DefaultTableModel;
//import javax.swing.JTable;
/**
*
* #author AldoFerino
*/
public class kasirJframe extends javax.swing.JFrame {
/**
* Creates new form kasirJframe
*/
public kasirJframe() {
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();
jLabel1 = new javax.swing.JLabel();
Nama = new javax.swing.JTextField();
jLabel2 = new javax.swing.JLabel();
Harga = new javax.swing.JTextField();
jLabel3 = new javax.swing.JLabel();
Qty = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
Jumlah = new javax.swing.JLabel();
jScrollPane2 = new javax.swing.JScrollPane();
jTable1 = new javax.swing.JTable();
Pesan = new javax.swing.JLabel();
Totalharga = new javax.swing.JLabel();
Bayar = new javax.swing.JTextField();
jButton3 = new javax.swing.JButton();
Kembalian = new javax.swing.JLabel();
jButton2 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel1.setText("Nama");
Nama.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
NamaActionPerformed(evt);
}
});
jLabel2.setText("Harga");
Harga.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
HargaActionPerformed(evt);
}
});
Harga.addKeyListener(new java.awt.event.KeyAdapter() {
public void keyPressed(java.awt.event.KeyEvent evt) {
HargaKeyPressed(evt);
}
public void keyTyped(java.awt.event.KeyEvent evt) {
HargaKeyTyped(evt);
}
});
jLabel3.setText("Qty");
Qty.setText(" ");
Qty.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
QtyActionPerformed(evt);
}
});
Qty.addKeyListener(new java.awt.event.KeyAdapter() {
public void keyPressed(java.awt.event.KeyEvent evt) {
QtyKeyPressed(evt);
}
public void keyTyped(java.awt.event.KeyEvent evt) {
QtyKeyTyped(evt);
}
});
jButton1.setText("Input");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
Jumlah.setText("0");
jTable1.setBorder(javax.swing.BorderFactory.createEtchedBorder());
jTable1.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
},
new String [] {
"Nama", "Harga", "Qty", "Jumlah"
}
) {
boolean[] canEdit = new boolean [] {
false, false, false, false
};
public boolean isCellEditable(int rowIndex, int columnIndex) {
return canEdit [columnIndex];
}
});
jTable1.setAutoscrolls(false);
jTable1.setColumnSelectionAllowed(true);
jTable1.setOpaque(false);
jScrollPane2.setViewportView(jTable1);
jTable1.getColumnModel().getSelectionModel().setSelectionMode(javax.swing.ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
Pesan.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
Totalharga.setText("Rp.");
Bayar.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BayarActionPerformed(evt);
}
});
Bayar.addKeyListener(new java.awt.event.KeyAdapter() {
public void keyPressed(java.awt.event.KeyEvent evt) {
BayarKeyPressed(evt);
}
public void keyTyped(java.awt.event.KeyEvent evt) {
BayarKeyTyped(evt);
}
});
jButton3.setText("Bayar");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(evt);
}
});
Kembalian.setText("Rp.");
jButton2.setText("Delete");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(61, 61, 61)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(jLabel3, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jLabel2, javax.swing.GroupLayout.Alignment.LEADING))
.addComponent(jLabel1))
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(Nama)
.addComponent(Harga, javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(Qty, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.PREFERRED_SIZE, 151, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jButton1)
.addGap(28, 28, 28)
.addComponent(jButton2))
.addComponent(Jumlah, javax.swing.GroupLayout.PREFERRED_SIZE, 150, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 375, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(Kembalian, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton3, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(Bayar, javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(Totalharga, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.PREFERRED_SIZE, 375, javax.swing.GroupLayout.PREFERRED_SIZE))
.addComponent(Pesan, javax.swing.GroupLayout.PREFERRED_SIZE, 365, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(30, Short.MAX_VALUE))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(Nama, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(10, 10, 10)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(Harga, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addComponent(Jumlah, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(Qty, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jButton1)
.addComponent(jButton2))
.addGap(27, 27, 27)
.addComponent(Pesan, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 105, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(Totalharga, javax.swing.GroupLayout.PREFERRED_SIZE, 21, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(Bayar, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton3)
.addGap(11, 11, 11)
.addComponent(Kembalian, javax.swing.GroupLayout.PREFERRED_SIZE, 22, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap())
);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
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)
.addContainerGap(12, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
pack();
setLocationRelativeTo(null);
}// </editor-fold>
private void BayarActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void NamaActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// Tombol Input untuk masukkan data yang di input oleh user ke tabel
Pesan.setText("");
DefaultTableModel a = (DefaultTableModel) jTable1.getModel();
if(Nama.getText().trim().equals("")){
Pesan.setText("MAAF, NAMA BARANG HARUS DI ISI");
}else{
int c = Integer.parseInt(Harga.getText());
int b = Integer.parseInt(Qty.getText());
int d = b * c;
Jumlah.setText(""+d);
Jumlah.setVisible(false);
int t = 0;
Vector z = new Vector();
z.add(Nama.getText());
z.add("Rp.".concat(Harga.getText()));
z.add(Qty.getText());
z.add("Rp.".concat(Jumlah.getText()));
a.addRow(z);
for(int e = 0; e <a.getRowCount(); e++){
t += Integer.parseInt(a.getValueAt(e, 3).toString().substring(3));
}
Totalharga.setText("Rp."+t);
Nama.setText("");
Harga.setText("");
Qty.setText("");
}
}
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
// Hapus
//DefaultTableModel a = (DefaultTableModel) jTable1.getModel();
DefaultTableModel a = (DefaultTableModel) jTable1.getModel();
int select = jTable1.getSelectedRow();
a.removeRow(select);
Nama.setText("");
Harga.setText("");
Qty.setText("");
int t= 0;
for(int e = 0; e <a.getRowCount(); e++){
t += Integer.parseInt(a.getValueAt(e, 3).toString().substring(3));
}
Totalharga.setText("Rp."+t);
int g = Integer.parseInt(Totalharga.getText().substring(3));
int f = Integer.parseInt(Bayar.getText());
int h = f - g;
Kembalian.setText("Rp."+h);
}
private void BayarKeyTyped(java.awt.event.KeyEvent evt) {
// tertekan di kolom bayar
Pesan.setText("");
char a = evt.getKeyChar();
int b = evt.getKeyCode() ;
if(!Character.isDigit(a)){
evt.consume();
Pesan.setText("maaf hanya bisa input pakai angka");
} else if (b == VK_BACK_SPACE) {
evt.consume();
Pesan.setText("maaf hanya bisa input pakai angka");
}
}
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
int g = Integer.parseInt(Totalharga.getText().substring(3));
int f = Integer.parseInt(Bayar.getText());
int h = f - g;
Kembalian.setText("Rp."+h);
}
private void QtyKeyTyped(java.awt.event.KeyEvent evt) {
// Qty terketik
Pesan.setText("");
char a = evt.getKeyChar();
int b = evt.getKeyCode() ;
if(!Character.isDigit(a)){
evt.consume();
Pesan.setText("maaf hanya bisa input pakai angka");
} else if (b == VK_BACK_SPACE) {
evt.consume();
Pesan.setText("maaf hanya bisa input pakai angka");
}
}
private void HargaKeyTyped(java.awt.event.KeyEvent evt) {
// TODO add your handling code here:
Pesan.setText("");
char a = evt.getKeyChar();
int b = evt.getKeyCode() ;
if(!Character.isDigit(a)){
evt.consume();
Pesan.setText("maaf hanya bisa input pakai angka");
} else if (b == VK_BACK_SPACE) {
evt.consume();
Pesan.setText("maaf hanya bisa input pakai angka");
}
}
private void BayarKeyPressed(java.awt.event.KeyEvent evt) {
// TODO add your handling code here:
}
private void HargaActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void HargaKeyPressed(java.awt.event.KeyEvent evt) {
// TODO add your handling code here:
}
private void QtyKeyPressed(java.awt.event.KeyEvent evt) {
// TODO add your handling code here:
}
private void QtyActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
/**
* #param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
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 | InstantiationException | IllegalAccessException | javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(kasirJframe.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new kasirJframe().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JTextField Bayar;
private javax.swing.JTextField Harga;
private javax.swing.JLabel Jumlah;
private javax.swing.JLabel Kembalian;
private javax.swing.JTextField Nama;
private javax.swing.JLabel Pesan;
private javax.swing.JTextField Qty;
private javax.swing.JLabel Totalharga;
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JPanel jPanel1;
private javax.swing.JScrollPane jScrollPane2;
private javax.swing.JTable jTable1;
// End of variables declaration
void isVisible(boolean b) {
throw new UnsupportedOperationException("Not supported yet."); //To
change body of generated methods, choose Tools | Templates.
}
}
and instead giving me this error in the output window tab when i pressed jButton1 or button "Input" in the user interface window or jframe or design.
Exception in thread "AWT-EventQueue-0" java.lang.NumberFormatException: For input string: " 1"
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:569)
at java.lang.Integer.parseInt(Integer.java:615)
at kasiraldo.kasirJframe.jButton1ActionPerformed(kasirJframe.java:264)
at kasiraldo.kasirJframe.access$700(kasirJframe.java:15)
at kasiraldo.kasirJframe$6.actionPerformed(kasirJframe.java:97)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$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:6533)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6298)
at java.awt.Container.processEvent(Container.java:2236)
at java.awt.Component.dispatchEventImpl(Component.java:4889)
at java.awt.Container.dispatchEventImpl(Container.java:2294)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
at java.awt.Container.dispatchEventImpl(Container.java:2280)
at java.awt.Window.dispatchEventImpl(Window.java:2746)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.awt.EventQueue$4.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
BUILD SUCCESSFUL (total time: 9 seconds)
sorry if my question looks so vague...

You have set the default value of your Qty text field to " "(one space).
Qty.setText(" ");
And you might be adding 1 to that text field and pressing the submit button which triggers jButton1ActionPerformed method. You are trying to parse text " 1" into the integer here which is causing java.lang.NumberFormatException: For input string: " 1" exception -
int b = Integer.parseInt(Qty.getText());
The simple solution would be set "" (blank) into the Qty text field -
Qty.setText("");
It should work just fine.

java.lang.NumberFormatException: For input string: " 1"
Actually, this says it all: "1" can be parsed into a number, but with the space added to it, " 1", this is a plain text String, not a numeric format anymore.
call trim() on the String you are trying to parse, to remove leading and trailing spaces.

I have an error with my if statement [duplicate]

This question already exists:
If statement for jframe main method doesn't work [duplicate]
Closed 7 years ago.
I'm new to java, I'm trying to select shape using jframe and then display the area using console output, I tried using it as follow, but it's giving me an error. Not sure how to do an if statement, it says non static variable can't be referenced from static context. How to fix my code?
Thank you in advance
public class design extends javax.swing.JFrame {
int type;
int xtl, ytl, xtr, ytr, xbl, ybl,xbr, ybr;
/**
* Creates new form design
*/
public design() {
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() {
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
jButton4 = new javax.swing.JButton();
jButton5 = new javax.swing.JButton();
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();
jLabel6 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
jTextField3 = new javax.swing.JTextField();
jTextField4 = new javax.swing.JTextField();
jTextField5 = new javax.swing.JTextField();
jTextField6 = new javax.swing.JTextField();
jTextField7 = new javax.swing.JTextField();
jTextField8 = new javax.swing.JTextField();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jButton1.setText("Quadrilateral");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jButton2.setText("Rectangle");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});
jButton3.setText("Parallelogram");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(evt);
}
});
jButton4.setText("Square");
jButton4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton4ActionPerformed(evt);
}
});
jButton5.setText("Trapezoid");
jButton5.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton5ActionPerformed(evt);
}
});
jLabel1.setText("X:");
jLabel2.setText("Y:");
jLabel3.setText("Top left point");
jLabel4.setText("Top right point");
jLabel5.setText("Bottom left point");
jLabel6.setText("Bottom right point");
jTextField1.setText(" ");
jTextField1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField1ActionPerformed(evt);
}
});
jTextField2.setText(" ");
jTextField2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField2ActionPerformed(evt);
}
});
jTextField3.setText(" ");
jTextField3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField3ActionPerformed(evt);
}
});
jTextField4.setText(" ");
jTextField4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField4ActionPerformed(evt);
}
});
jTextField5.setText(" ");
jTextField5.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField5ActionPerformed(evt);
}
});
jTextField6.setText(" ");
jTextField6.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField6ActionPerformed(evt);
}
});
jTextField7.setText(" ");
jTextField7.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField7ActionPerformed(evt);
}
});
jTextField8.setText(" ");
jTextField8.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField8ActionPerformed(evt);
}
});
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(24, 24, 24)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(layout.createSequentialGroup()
.addGap(47, 47, 47)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(90, 90, 90)
.addComponent(jButton4)
.addGap(142, 142, 142)
.addComponent(jButton5)
.addGap(0, 0, Short.MAX_VALUE))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGap(0, 40, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jTextField1)
.addComponent(jTextField5))
.addComponent(jLabel3))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(39, 39, 39)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField6, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(58, 58, 58)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jTextField7, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(67, 67, 67)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField8, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(layout.createSequentialGroup()
.addGap(44, 44, 44)
.addComponent(jLabel4)
.addGap(27, 27, 27)
.addComponent(jLabel5)
.addGap(32, 32, 32)
.addComponent(jLabel6)))
.addGap(137, 137, 137))))
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel2)
.addComponent(jLabel1))
.addContainerGap())
.addGroup(layout.createSequentialGroup()
.addComponent(jButton1)
.addGap(148, 148, 148)
.addComponent(jButton3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton2)
.addGap(75, 75, 75))))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(20, 20, 20)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton1)
.addComponent(jButton3)
.addComponent(jButton2))
.addGap(26, 26, 26)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton4)
.addComponent(jButton5))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 73, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(jLabel4)
.addComponent(jLabel5)
.addComponent(jLabel6))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField4, 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(jTextField8, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField7, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel2)
.addComponent(jTextField5, javax.swing.GroupLayout.PREFERRED_SIZE, 20, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField6, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(43, 43, 43))
);
pack();
}// </editor-fold>
private void jTextField7ActionPerformed(java.awt.event.ActionEvent evt) {
ybl = Integer.parseInt(jTextField7.getText()); }
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
type =1;
// TODO add your handling code here:
}
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
type =2;
// TODO add your handling code here:
}
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
type =3;
}
private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {
type =4;
// TODO add your handling code here:
}
private void jButton5ActionPerformed(java.awt.event.ActionEvent evt) {
type =5;
// TODO add your handling code here:
}
private void jTextField1ActionPerformed(java.awt.event.ActionEvent evt) {
xtl = Integer.parseInt(jTextField1.getText());
}
private void jTextField5ActionPerformed(java.awt.event.ActionEvent evt) {
ytl = Integer.parseInt(jTextField5.getText());
}
private void jTextField3ActionPerformed(java.awt.event.ActionEvent evt) {
xtr = Integer.parseInt(jTextField3.getText());
}
private void jTextField6ActionPerformed(java.awt.event.ActionEvent evt) {
ytr = Integer.parseInt(jTextField6.getText());
}
private void jTextField4ActionPerformed(java.awt.event.ActionEvent evt) {
xbl = Integer.parseInt(jTextField4.getText());
}
private void jTextField2ActionPerformed(java.awt.event.ActionEvent evt) {
xbr = Integer.parseInt(jTextField2.getText());
}
private void jTextField8ActionPerformed(java.awt.event.ActionEvent evt) {
ybr = Integer.parseInt(jTextField8.getText());
}
/**
* #param args the command line arguments
*/
public static void main(String args[]) {
if (type==1){
System.out.println("Qoordinates of Quadrilateral are");
}
if (type==2){
System.out.println("Text2");
}
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
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(design.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(design.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(design.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(design.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
System.out.println("Hello World");
new design().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.JButton jButton4;
private javax.swing.JButton jButton5;
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.JLabel jLabel6;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
private javax.swing.JTextField jTextField3;
private javax.swing.JTextField jTextField4;
private javax.swing.JTextField jTextField5;
private javax.swing.JTextField jTextField6;
private javax.swing.JTextField jTextField7;
private javax.swing.JTextField jTextField8;
// End of variables declaration
}

(Style nit: your design class should be named Design.)
In your main method, you hadn't created a new Design object yet. You can only access type for a Design instance.

Java - Calculator GUI

Yes, I am aware that this question has been asked before; however, our methods of conducting the functions are different and for this reason I believe that this should not be marked as a duplicate.
I am trying to make a Calculator GUI Function, but currently all I can do is have the user click on a number, and then have that number printed out to the screen.
When I click the divide function (this is the only one I have set up currently), "1" is printed out to the screen. Obviously this is not an error, since I am getting the user's input (the number clicked) twice without change. That number divided by itself (which is essentially what I am doing right now) is 1.
This is my current code:
package my.calculator;
public class CalculatorUI extends javax.swing.JFrame
{
public CalculatorUI()
{
initComponents();
}
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
Output = new javax.swing.JTextField();
One = new javax.swing.JButton();
Two = new javax.swing.JButton();
Three = new javax.swing.JButton();
Four = new javax.swing.JButton();
Five = new javax.swing.JButton();
Six = new javax.swing.JButton();
Seven = new javax.swing.JButton();
Eight = new javax.swing.JButton();
Nine = new javax.swing.JButton();
Zero = new javax.swing.JButton();
Divide = new javax.swing.JButton();
Multiply = new javax.swing.JButton();
Subtract = new javax.swing.JButton();
Add = new javax.swing.JButton();
Clear = new javax.swing.JButton();
Calc = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
Output.addPropertyChangeListener(new java.beans.PropertyChangeListener() {
public void propertyChange(java.beans.PropertyChangeEvent evt) {
OutputPropertyChange(evt);
}
});
One.setText("1");
One.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
OneActionPerformed(evt);
}
});
Two.setText("2");
Two.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
TwoActionPerformed(evt);
}
});
Three.setText("3");
Three.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
ThreeActionPerformed(evt);
}
});
Four.setText("4");
Four.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
FourActionPerformed(evt);
}
});
Five.setText("5");
Five.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
FiveActionPerformed(evt);
}
});
Six.setText("6");
Six.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
SixActionPerformed(evt);
}
});
Seven.setText("7");
Seven.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
SevenActionPerformed(evt);
}
});
Eight.setText("8");
Eight.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
EightActionPerformed(evt);
}
});
Nine.setText("9");
Nine.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
NineActionPerformed(evt);
}
});
Zero.setText("0");
Zero.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
ZeroActionPerformed(evt);
}
});
Divide.setText("/");
Divide.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
DivideActionPerformed(evt);
}
});
Multiply.setText("X");
Subtract.setText("-");
Add.setText("+");
Clear.setText("C");
Clear.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
ClearActionPerformed(evt);
}
});
Calc.setText("=");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(Output)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addGroup(layout.createSequentialGroup()
.addComponent(One)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(Two)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(Three, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGroup(layout.createSequentialGroup()
.addComponent(Four)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(Five)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(Six, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(Seven)
.addComponent(Clear))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(layout.createSequentialGroup()
.addComponent(Eight)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(Nine, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGroup(layout.createSequentialGroup()
.addComponent(Zero)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(Calc)))))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(Add)
.addGap(0, 0, Short.MAX_VALUE))
.addComponent(Subtract, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.addGroup(layout.createSequentialGroup()
.addGap(4, 4, 4)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(Multiply, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(Divide, 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(Output, 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.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(Three, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(One)
.addComponent(Two))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(Four)
.addComponent(Five)
.addComponent(Six)
.addComponent(Multiply))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(Seven)
.addComponent(Eight)
.addComponent(Nine)
.addComponent(Subtract))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(Zero)
.addComponent(Add)
.addComponent(Calc)
.addComponent(Clear)))
.addComponent(Divide, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(0, 0, Short.MAX_VALUE))))
);
pack();
}// </editor-fold>
private void OneActionPerformed(java.awt.event.ActionEvent evt) {
Output.setText(String.valueOf(1));
}
private void ClearActionPerformed(java.awt.event.ActionEvent evt) {
Output.setText(String.valueOf(""));
}
private void TwoActionPerformed(java.awt.event.ActionEvent evt) {
Output.setText(String.valueOf(2));
}
private void ThreeActionPerformed(java.awt.event.ActionEvent evt) {
Output.setText(String.valueOf(3));
}
private void FourActionPerformed(java.awt.event.ActionEvent evt) {
Output.setText(String.valueOf(4));
}
private void FiveActionPerformed(java.awt.event.ActionEvent evt) {
Output.setText(String.valueOf(5));
}
private void SixActionPerformed(java.awt.event.ActionEvent evt) {
Output.setText(String.valueOf(6));
}
private void SevenActionPerformed(java.awt.event.ActionEvent evt) {
Output.setText(String.valueOf(7));
}
private void EightActionPerformed(java.awt.event.ActionEvent evt) {
Output.setText(String.valueOf(8));
}
private void NineActionPerformed(java.awt.event.ActionEvent evt) {
Output.setText(String.valueOf(9));
}
private void ZeroActionPerformed(java.awt.event.ActionEvent evt) {
Output.setText(String.valueOf(0));
}
private void DivideActionPerformed(java.awt.event.ActionEvent evt) {
int num1 = Integer.parseInt(Output.getText());
int number = Integer.parseInt(Output.getText());
int calculate = num1 / number;
Output.setText(Integer.toString(calculate));
}
private void OutputPropertyChange(java.beans.PropertyChangeEvent evt) {
Output.setEditable(false); // TODO add your handling code here:
}
public static void main(String args[])
{
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
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(CalculatorUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(CalculatorUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(CalculatorUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(CalculatorUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new CalculatorUI().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton Add;
private javax.swing.JButton Calc;
private javax.swing.JButton Clear;
private javax.swing.JButton Divide;
private javax.swing.JButton Eight;
private javax.swing.JButton Five;
private javax.swing.JButton Four;
private javax.swing.JButton Multiply;
private javax.swing.JButton Nine;
private javax.swing.JButton One;
private javax.swing.JTextField Output;
private javax.swing.JButton Seven;
private javax.swing.JButton Six;
private javax.swing.JButton Subtract;
private javax.swing.JButton Three;
private javax.swing.JButton Two;
private javax.swing.JButton Zero;
// End of variables declaration
}
I would also like to include a decimal function (so that you can have doubles, etc), but am lost as to how to do so. Any and all help regarding both questions is greatly appreciated.
Thank you.

I know it's tempting but I consider a calculater (even if it's just for basic arithmetic) not quite as trivial as it might look for a beginner. How would you e.g. solve an expression like 3+3*2? What you need for starters is a Parser/Tokenizer an intermediate format like the polish notation and an algorithm to get the order right e.g. the shanting yard algorithm.

Netbeans: string not displaying

I want to display string in textbox of vpsfame class below my code, but I am unable to dispaly it. Can you give me suggestion this string in new8 class show in code and serial class gives me string from gps continue. It also displays it at run time via System.out.println, but does not display it through the textbox of vpsfame class
package vpspro;
import javax.comm.*;
import java.util.*;
import java.io.*;
public class Serial
{
public void com() throws UnsupportedCommOperationException, IOException, TooManyListenersException
{
int c=1;
String wantedPortName="COM6";
Enumeration portIdentifiers = CommPortIdentifier.getPortIdentifiers();
CommPortIdentifier portId = null;
while(portIdentifiers.hasMoreElements())
{
CommPortIdentifier pid = (CommPortIdentifier) portIdentifiers.nextElement();
if(pid.getPortType() == CommPortIdentifier.PORT_SERIAL &&
pid.getName().equals(wantedPortName))
{
portId = pid;
break;
}
}
if(portId == null)
{
System.err.println("Could not find serial port " + wantedPortName);
System.exit(1);
}
else
{
System.out.println("system find gps reciever");
}
SerialPort port = null;
try {
port = (SerialPort) portId.open(
"RMC",
1);
System.out.println("all are ok");
} catch(PortInUseException e) {
System.err.println("Port already in use: " + e);
System.exit(1);
}
port.setSerialPortParams(
4800,
SerialPort.DATABITS_8,
SerialPort.STOPBITS_1,
SerialPort.PARITY_NONE);
BufferedReader is = null;
try {
is = new BufferedReader(new InputStreamReader(port.getInputStream()));
System.out.println("data is ok");
} catch (IOException e) {
System.err.println("Can't open input stream: write-only");
is = null;
}
String pt=null;
while(true)
{
String st = is.readLine();
System.out.print("(" + c + ")");
c++;
new8 obj1 = new new8();
obj1.decode(st);
System.out.println(st);
st = st.replace(st, "");
}
if (is != null) is.close();
/*if (os != null) os.close();*/
if (port != null) port.close();
}
}
this code for start communication with serial class
package vpspro;
import java.io.IOException;
import java.util.TooManyListenersException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.comm.UnsupportedCommOperationException;
public class getcon extends javax.swing.JFrame {
public getcon() {
initComponents();
}
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
sc = new javax.swing.JComboBox();
jLabel2 = new javax.swing.JLabel();
br = new javax.swing.JComboBox();
help = new javax.swing.JButton();
ok = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel1.setText("select comport");
sc.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "COM1", "COM2", "COM3", "COM4", "COM5", "COM6", "COM7", "COM8", "COM9", "COM10", "COM11", "COM12" }));
sc.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
scActionPerformed(evt);
}
});
sc.addInputMethodListener(new java.awt.event.InputMethodListener() {
public void caretPositionChanged(java.awt.event.InputMethodEvent evt) {
}
public void inputMethodTextChanged(java.awt.event.InputMethodEvent evt) {
scInputMethodTextChanged(evt);
}
});
jLabel2.setText("select buad rate");
br.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "4800", "1900", "150000" }));
br.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
brActionPerformed(evt);
}
});
help.setText("help");
ok.setText("ok");
ok.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
okActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(layout.createSequentialGroup()
.addGap(67, 67, 67)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel1)
.addComponent(sc, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(105, 105, 105))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap(171, Short.MAX_VALUE)
.addComponent(ok)
.addGap(28, 28, 28)))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel2)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(help)
.addComponent(br, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap(80, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(57, 57, 57)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(jLabel2))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(sc, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(br, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(57, 57, 57)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(help)
.addComponent(ok))
.addContainerGap(118, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void brActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
if(evt.getSource()==br)
br.addItem("4800");
br.addItem("9600");
}
private void scActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
if(evt.getSource()==sc)
sc.addItem("COM6");
sc.addItem("COM7");
}
private void scInputMethodTextChanged(java.awt.event.InputMethodEvent evt) {
// TODO add your handling code here:
if(evt.getSource()==sc)
sc.addItem("COM6");
sc.addItem("COM7");
}
private void okActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
if(evt.getSource()==ok)
{
try {
new Serial().com();
} catch (UnsupportedCommOperationException ex) {
Logger.getLogger(getcon.class.getName()).log(Level.SEVERE, null, ex);
} catch (IOException ex) {
Logger.getLogger(getcon.class.getName()).log(Level.SEVERE, null, ex);
} catch (TooManyListenersException ex) {
Logger.getLogger(getcon.class.getName()).log(Level.SEVERE, null, ex);
}
new new8();
}
}
public void getcom() {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new getcon().setVisible(true);
}
});
}
private javax.swing.JComboBox br;
private javax.swing.JButton help;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
public javax.swing.JButton ok;
private javax.swing.JComboBox sc;
}
this code decoding my gps string and dispaly and hear problem created i can not dispaly below string in textbox when i rum program textbox are empty.
package vpa.io.*;
import vpspro.vpsfame;
public class new8
{
static String[] a2;
static String a1[];
static String c;
public static String[] t;
public void decode(String st)
{
if(st.isEmpty())
{
System.out.println("System has proble");
vpsfame obj=new vpsfame();
obj.ab.setText("ok");
}
else
{
a1=st.split("\\$",0);
a2=a1[1].split("\\*",0);
checksum();
if(a2[1].equalsIgnoreCase(c))
{
t=st.split(",",0);
switch (t[0].charAt(0))
{
case '$':
String s=t[0].substring(3,6);
String s3="RMC";
if (s.compareTo(s3)==0)
{
System.out.println(" NMEA 0183 Details.....");
System.out.println("System identity: "+t[0].substring(1,3));
System.out.println("NMEA Formate: "+t[0].substring(3,6));
System.out.println("(UTC)Time: "+t[1].substring(1,2));
new vpsfame().ac.setText(t[1].substring(1,2));
System.out.println("Lattitude: "+t[3]);
System.out.println("Direction of Lattitude: "+t[4]);
new vpsfame().ab.setText(t[3].concat(t[4]));
System.out.println("Longitude: "+t[5]);
System.out.println("Direction of Longitude: "+t[6]);
new vpsfame().bc.setText(t[5].concat(t[6]));
System.out.println("Speed over Ground: "+t[7]);
new vpsfame().cd.setText(t[7]);
/*System.out.println("Track mode: "+t[8]);
System.out.println(st.isEmpty());
System.out.println("DATE: "+t[9]);
System.out.println("adjustment declination "+t[10]);
System.out.println("Direction of Magnetic variation: "+t[11].charAt(0));*/
}
}
else
System.out.println(" Invalid Formate...");
break;
default:
System.out.println(" Invalid DATA....");
}
}
else
System.out.println(" no match checksum");
}
}
public static void checksum()
{
int l=a2[0].length();
char[] a=a2[0].toCharArray();
int b=0;
for(int i=0;i<l;i++)
{
b=b^a[i];
}
c=Integer.toHexString(b);
}
}
and this is my main class
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/*
* vpsfame.java
*
* Created on Jan 26, 2013, 11:02:32 PM
*/
package vpspro;
import java.awt.Color;
import java.awt.Cursor;
import java.awt.Font;
import java.awt.Image;
import java.awt.TextField;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.net.URL;
import java.util.TooManyListenersException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.comm.UnsupportedCommOperationException;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JComboBox;
import javax.swing.JFrame;
/**
*
* #author DHARMA
*/
public class vpsfame extends javax.swing.JFrame {
public vpsfame()
{
initComponents();
}
/** Creates new form vpsfame */
/** 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() {
jComboBox1 = new javax.swing.JComboBox();
ab = new javax.swing.JTextField();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
bc = new javax.swing.JTextField();
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
ac = new javax.swing.JTextField();
jLabel5 = new javax.swing.JLabel();
cd = new javax.swing.JTextField();
jPanel1 = new javax.swing.JPanel();
jMenuBar1 = new javax.swing.JMenuBar();
jMenu1 = new javax.swing.JMenu();
gc = new javax.swing.JMenuItem();
jMenuItem2 = new javax.swing.JMenuItem();
lm = new javax.swing.JMenuItem();
jMenuItem4 = new javax.swing.JMenuItem();
jMenuItem5 = new javax.swing.JMenuItem();
jMenuItem6 = new javax.swing.JMenuItem();
jMenu2 = new javax.swing.JMenu();
jMenuItem7 = new javax.swing.JMenuItem();
jMenuItem8 = new javax.swing.JMenuItem();
jComboBox1.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Item 1", "Item 2", "Item 3", "Item 4" }));
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
ab.setEditable(false);
ab.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
abActionPerformed(evt);
}
});
jLabel1.setText("latitude");
jLabel2.setText("longitude");
bc.setText(" ");
bc.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
bcActionPerformed(evt);
}
});
jLabel4.setText("UTC");
ac.setText(" ");
ac.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
acActionPerformed(evt);
}
});
jLabel5.setText("Speed of vessel");
cd.setText(" ");
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 621, Short.MAX_VALUE)
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 368, Short.MAX_VALUE)
);
jMenu1.setText("File");
gc.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_G, java.awt.event.InputEvent.CTRL_MASK));
gc.setIcon(new javax.swing.ImageIcon("C:\\Users\\DHARMA\\Desktop\\png\\20x20\\55.png")); // NOI18N
gc.setText("get connection");
gc.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
gcActionPerformed(evt);
}
});
jMenu1.add(gc);
jMenuItem2.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_T, java.awt.event.InputEvent.CTRL_MASK));
jMenuItem2.setText("track");
jMenu1.add(jMenuItem2);
lm.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_M, java.awt.event.InputEvent.ALT_MASK));
lm.setText("load map");
lm.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
lmActionPerformed(evt);
}
});
jMenu1.add(lm);
jMenuItem4.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_S, java.awt.event.InputEvent.CTRL_MASK));
jMenuItem4.setText("data save");
jMenu1.add(jMenuItem4);
jMenuItem5.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_T, java.awt.event.InputEvent.META_MASK));
jMenuItem5.setText("set time zone");
jMenu1.add(jMenuItem5);
jMenuItem6.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_Q, java.awt.event.InputEvent.CTRL_MASK));
jMenuItem6.setText("quit");
jMenu1.add(jMenuItem6);
jMenuBar1.add(jMenu1);
jMenu2.setText("view");
jMenuItem7.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_S, java.awt.event.InputEvent.ALT_MASK));
jMenuItem7.setText("saved data");
jMenu2.add(jMenuItem7);
jMenuItem8.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_A, java.awt.event.InputEvent.ALT_MASK));
jMenuItem8.setText("about us");
jMenu2.add(jMenuItem8);
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()
.addGap(52, 52, 52)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel5)
.addGap(19, 19, 19))
.addGroup(layout.createSequentialGroup()
.addComponent(cd, javax.swing.GroupLayout.PREFERRED_SIZE, 60, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(35, 35, 35))
.addComponent(ab, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 95, Short.MAX_VALUE)
.addComponent(jLabel3)
.addComponent(ac, javax.swing.GroupLayout.DEFAULT_SIZE, 95, Short.MAX_VALUE)
.addComponent(jLabel4)
.addComponent(bc, javax.swing.GroupLayout.DEFAULT_SIZE, 95, Short.MAX_VALUE)
.addComponent(jLabel2)
.addComponent(jLabel1))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
.addGap(11, 11, 11)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGroup(layout.createSequentialGroup()
.addGap(25, 25, 25)
.addComponent(jLabel1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(ab, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(43, 43, 43)
.addComponent(jLabel3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jLabel2)
.addGap(16, 16, 16)
.addComponent(bc, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 56, Short.MAX_VALUE)
.addComponent(jLabel4)
.addGap(18, 18, 18)
.addComponent(ac, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(45, 45, 45)
.addComponent(jLabel5)
.addGap(18, 18, 18)
.addComponent(cd, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap())
);
pack();
}// </editor-fold>
private void gcActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
if(evt.getSource()==gc)
{
getcon obj3=new getcon();
obj3.setVisible(true);
}
}
private void lmActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void abActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void acActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void bcActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
/**
* #param args the command line arguments
*/
public static void main(String args[]) throws UnsupportedCommOperationException, IOException, TooManyListenersException {
/*public vpsfame()
{
initComponents();*/
new new8();
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
/*URL url=getClass().getResource("C:\\Users\\DHARMA\\Documents\\NetBeansProjects\\vpspro\\src");*/
vpsfame obj4=new vpsfame();
new vpsfame().setBackground(Color.yellow);
obj4.setSize(1000,
500);
ImageIcon image1=new ImageIcon("C:\\Users\\DHARMA\\Documents\\NetBeansProjects\\vpspro\\src");
System.out.println("jjdfhj");
obj4.setIconImage(image1.getImage());
obj4.setTitle("VPS");
obj4.setVisible(true);
new new8();
}
});
}
/*public vpsfame()
{
fm=new JFrame("VPS");
fm.setSize(1000, 1000);
fm.setVisible(true);
fm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}*/
// Variables declaration - do not modify
public static javax.swing.JTextField ab;
public javax.swing.JTextField ac;
public static javax.swing.JTextField bc;
public javax.swing.JTextField cd;
private javax.swing.JMenuItem gc;
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.JLabel jLabel5;
private javax.swing.JMenu jMenu1;
private javax.swing.JMenu jMenu2;
private javax.swing.JMenuBar jMenuBar1;
private javax.swing.JMenuItem jMenuItem2;
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.JPanel jPanel1;
private javax.swing.JMenuItem lm;
// End of variables declaration
}

I would seriously advise you to take a time out, and refactor all of your code. Igonoring that in the class new8, in method decode replace this code:
new vpsfame().ac.setText(t[1].substring(1,2));
System.out.println("Lattitude: "+t[3]);
System.out.println("Direction of Lattitude: "+t[4]);
new vpsfame().ab.setText(t[3].concat(t[4]));
System.out.println("Longitude: "+t[5]);
System.out.println("Direction of Longitude: "+t[6]);
new vpsfame().bc.setText(t[5].concat(t[6]));
System.out.println("Speed over Ground: "+t[7]);
new vpsfame().cd.setText(t[7]);
With this:
//use one object, dont just create new frames
vpsfame myFrame = new vpsfame();
myFrame.ac.setText(t[1].substring(1,2));
System.out.println("Lattitude: "+t[3]);
System.out.println("Direction of Lattitude: "+t[4]);
myFrame.ab.setText(t[3].concat(t[4]));
System.out.println("Longitude: "+t[5]);
System.out.println("Direction of Longitude: "+t[6]);
myFrame.bc.setText(t[5].concat(t[6]));
System.out.println("Speed over Ground: "+t[7]);
myFrame.cd.setText(t[7]);
//Also set the frame to visible, so it can be displayed once you've done all this work.
myFrame.setVisible(true);
The problem is that:
Firstly, you are creating multiple vpsframe objects where you should only have one. It makes no sense to create 5 frames where each will have 4 empty fields. Create one object and initialise all it's fields rather than using 5 diffrent objects.
You are not tracking the objects you are creating, the garbage collector will just get rid of the, so create one object, assign it to a variable and use that.
Set the vpsfame object to visible, otherwise you will never see it.
Your code also needs refactoring, you should be using the camelCase naming convention, and classes should always begin with Capital letters.

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