Develop Reference

Java Swing GUI freezes after boutton pressed

I'm a newbie in java, and i"m trying to makge a simple GUI that will allow once a button clicked, to execute a .bat file and display the outpus in a JTextPane.
But once the button is pressed (The .bat file is excecuted), the whole GUI freezes, even after all the commands of the .bat file are excecuted.
I made some searchs and i've been told to create another thread in which the action on the bat file will be process, and i don't know how to do it.
This is 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 com.casys.appletloader;
import java.io.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JOptionPane;
/**
*
* #author ADMIN
*/
public class View1 extends javax.swing.JFrame {
/**
* Creates new form View1
*/
public View1() {
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() {
jInternalFrame1 = new javax.swing.JInternalFrame();
jMenuItem2 = new javax.swing.JMenuItem();
jFrame1 = new javax.swing.JFrame();
fileButton = new javax.swing.JButton();
installBoutton = new javax.swing.JButton();
listBoutton = new javax.swing.JButton();
jProgressBar1 = new javax.swing.JProgressBar();
jLabel1 = new javax.swing.JLabel();
jTextField2 = new javax.swing.JTextField();
jScrollPane1 = new javax.swing.JScrollPane();
apduOutput = new javax.swing.JTextPane();
jMenuBar1 = new javax.swing.JMenuBar();
jMenu1 = new javax.swing.JMenu();
jMenu2 = new javax.swing.JMenu();
jMenuItem1 = new javax.swing.JMenuItem();
jMenu3 = new javax.swing.JMenu();
jMenuItem3 = new javax.swing.JMenuItem();
jMenu4 = new javax.swing.JMenu();
jMenuItem4 = new javax.swing.JMenuItem();
jInternalFrame1.setVisible(true);
javax.swing.GroupLayout jInternalFrame1Layout = new javax.swing.GroupLayout(jInternalFrame1.getContentPane());
jInternalFrame1.getContentPane().setLayout(jInternalFrame1Layout);
jInternalFrame1Layout.setHorizontalGroup(
jInternalFrame1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 0, Short.MAX_VALUE)
);
jInternalFrame1Layout.setVerticalGroup(
jInternalFrame1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 0, Short.MAX_VALUE)
);
jMenuItem2.setText("jMenuItem2");
javax.swing.GroupLayout jFrame1Layout = new javax.swing.GroupLayout(jFrame1.getContentPane());
jFrame1.getContentPane().setLayout(jFrame1Layout);
jFrame1Layout.setHorizontalGroup(
jFrame1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 400, Short.MAX_VALUE)
);
jFrame1Layout.setVerticalGroup(
jFrame1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 300, Short.MAX_VALUE)
);
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Application Loader - Casys Technology");
setLocationByPlatform(true);
setMaximumSize(new java.awt.Dimension(693, 492));
setMinimumSize(new java.awt.Dimension(693, 492));
setResizable(false);
fileButton.setText("Choose File...");
fileButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
fileButtonActionPerformed(evt);
}
});
installBoutton.setText("Install Applet");
installBoutton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
installBouttonActionPerformed(evt);
}
});
listBoutton.setText("List applets");
listBoutton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
listBouttonActionPerformed(evt);
}
});
jLabel1.setText("File Name");
jScrollPane1.setViewportView(apduOutput);
jMenu1.setText("Instaling Applet");
jMenu1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenu1ActionPerformed(evt);
}
});
jMenuBar1.add(jMenu1);
jMenu2.setText("Encoding");
jMenu2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenu2ActionPerformed(evt);
}
});
jMenuItem1.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_E, java.awt.event.InputEvent.CTRL_DOWN_MASK));
jMenuItem1.setText("Encode");
jMenuItem1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem1ActionPerformed(evt);
}
});
jMenu2.add(jMenuItem1);
jMenuBar1.add(jMenu2);
jMenu3.setText("APDU");
jMenu3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenu3ActionPerformed(evt);
}
});
jMenuItem3.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_P, java.awt.event.InputEvent.CTRL_DOWN_MASK));
jMenuItem3.setText("Excecute an APDU command");
jMenuItem3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem3ActionPerformed(evt);
}
});
jMenu3.add(jMenuItem3);
jMenuBar1.add(jMenu3);
jMenu4.setText("About");
jMenu4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenu4ActionPerformed(evt);
}
});
jMenuItem4.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_B, java.awt.event.InputEvent.CTRL_DOWN_MASK));
jMenuItem4.setText("About the program");
jMenu4.add(jMenuItem4);
jMenuBar1.add(jMenu4);
setJMenuBar(jMenuBar1);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGap(0, 0, Short.MAX_VALUE)
.addComponent(jProgressBar1, javax.swing.GroupLayout.PREFERRED_SIZE, 216, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(237, 237, 237))
.addGroup(layout.createSequentialGroup()
.addGap(119, 119, 119)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 72, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, 270, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(67, 67, 67)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(installBoutton, javax.swing.GroupLayout.PREFERRED_SIZE, 99, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(fileButton, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(listBoutton, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.addContainerGap(56, Short.MAX_VALUE))
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jScrollPane1)
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(28, 28, 28)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(fileButton)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addComponent(installBoutton)
.addGap(19, 19, 19)
.addComponent(listBoutton)
.addGap(43, 43, 43)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 241, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jProgressBar1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(21, Short.MAX_VALUE))
);
getAccessibleContext().setAccessibleDescription("");
pack();
}// </editor-fold>
private void fileButtonActionPerformed(java.awt.event.ActionEvent evt) {
new javax.swing.JFileChooser().setVisible(true);
}
private void listBouttonActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void jMenu4ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void jMenu2ActionPerformed(java.awt.event.ActionEvent evt) {
// new encoding_view().setVisible(true);
}
private void jMenuItem1ActionPerformed(java.awt.event.ActionEvent evt) {
new encoding_view().setVisible(true);
}
private void jMenu3ActionPerformed(java.awt.event.ActionEvent evt) {
}
private void jMenuItem3ActionPerformed(java.awt.event.ActionEvent evt) {
new apdu_view().setVisible(true);
}
private void jMenu1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void installBouttonActionPerformed(java.awt.event.ActionEvent evt) {
Runtime runtime = Runtime.getRuntime();
try {
Process p1 = runtime.exec("cmd /c C:\\Java\\commandes_applet\\delete.bat");
InputStream is = p1.getInputStream();
int i = 0;
while ((i = is.read()) != -1) {
System.out.print((char) i);
apduOutput.setText(String.valueOf((char) i));
}
} catch (IOException ioException) {
System.out.println(ioException.getMessage());
JOptionPane.showMessageDialog(null, ioException);
}
/* try {
Thread.sleep(1000);
} catch (InterruptedException ex) {
JOptionPane.showMessageDialog(null, ex);
}*/
}
/**
* #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(View1.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(View1.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(View1.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(View1.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
//</editor-fold>
//</editor-fold>
//</editor-fold>
//</editor-fold>
//</editor-fold>
//</editor-fold>
//</editor-fold>
//</editor-fold>
//</editor-fold>
//</editor-fold>
//</editor-fold>
//</editor-fold>
//</editor-fold>
//</editor-fold>
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new View1().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JTextPane apduOutput;
private javax.swing.JButton fileButton;
private javax.swing.JButton installBoutton;
private javax.swing.JFrame jFrame1;
private javax.swing.JInternalFrame jInternalFrame1;
private javax.swing.JLabel jLabel1;
private javax.swing.JMenu jMenu1;
private javax.swing.JMenu jMenu2;
private javax.swing.JMenu jMenu3;
private javax.swing.JMenu jMenu4;
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.JProgressBar jProgressBar1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextField jTextField2;
private javax.swing.JButton listBoutton;
// End of variables declaration
}
This is the code of the listener of the boutton :
Runtime runtime = Runtime.getRuntime();
try {
Process p1 = runtime.exec("cmd /c C:\\Java\\commandes_applet\\delete.bat");
InputStream is = p1.getInputStream();
int i = 0;
while ((i = is.read()) != -1) {
System.out.print((char) i);
apduOutput.setText(String.valueOf((char) i));
}
} catch (IOException ioException) {
System.out.println(ioException.getMessage());
JOptionPane.showMessageDialog(null, ioException);
}
/* try {
Thread.sleep(1000);
} catch (InterruptedException ex) {
JOptionPane.showMessageDialog(null, ex);
}*/
} ```
I'm using the NetBeans GUI drag and drop feature to make the UI.

Unable to append text from a separate class to a JTextArea - Java

I'm currently having trouble (as the title states) appending text to a JTextArea from a separate class (or thread).
Here is my code, since I don't know what's causing the problem. (note that I'm using the Netbeans generated code for my GUI):
Chat Box GUI:
public class ChatBoxGUI extends javax.swing.JFrame
{
/**
* Creates new form ChatBoxGUI
* #return
*/
public javax.swing.JTextArea getTextArea()
{
return inputOutputTextArea;
}
public void setLabels(java.net.SocketAddress address, int port) {
this.addressLabel.setText("IP Address: " +address);
this.portLabel.setText("Port: " +Integer.toString(port));
}
public ChatBoxGUI() {
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();
startServerButton = new javax.swing.JButton();
connectServerButton = new javax.swing.JButton();
jLabel1 = new javax.swing.JLabel();
addressLabel = new javax.swing.JLabel();
portLabel = new javax.swing.JLabel();
outputTextField = new javax.swing.JTextField();
stopButton = new javax.swing.JButton();
jScrollPane2 = new javax.swing.JScrollPane();
inputOutputTextArea = new javax.swing.JTextArea();
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 100, Short.MAX_VALUE)
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 100, Short.MAX_VALUE)
);
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
startServerButton.setText("Start Server");
startServerButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
startServerButtonActionPerformed(evt);
}
});
connectServerButton.setText("Connect to Server");
connectServerButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
connectServerButtonActionPerformed(evt);
}
});
jLabel1.setFont(new java.awt.Font("Lucida Grande", 1, 14)); // NOI18N
jLabel1.setText("Isaac's Chat Box");
addressLabel.setText("IP Address:");
portLabel.setText("Port: ");
stopButton.setText("Stop");
stopButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
stopButtonActionPerformed(evt);
}
});
inputOutputTextArea.setEditable(false);
inputOutputTextArea.setColumns(20);
inputOutputTextArea.setRows(5);
jScrollPane2.setViewportView(inputOutputTextArea);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jScrollPane2)
.addComponent(outputTextField, javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(startServerButton, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(connectServerButton, 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(jLabel1)
.addComponent(addressLabel))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(stopButton)
.addGroup(layout.createSequentialGroup()
.addGap(6, 6, 6)
.addComponent(portLabel)))
.addGap(0, 18, Short.MAX_VALUE)))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(startServerButton)
.addComponent(jLabel1)
.addComponent(stopButton))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(connectServerButton)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(addressLabel)
.addComponent(portLabel)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 168, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(outputTextField, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap())
);
pack();
}// </editor-fold>
private void startServerButtonActionPerformed(java.awt.event.ActionEvent evt) {
CreateServerDialog createServerDialog = new CreateServerDialog(this, true);
createServerDialog.setVisible(true);
try {
Runnable serverClassRunnable = new ServerClass(createServerDialog.getPort());
Thread serverClassThread = new Thread(serverClassRunnable);
serverClassThread.start();
} catch (java.io.IOException e) {
e.printStackTrace();
}
}
private void connectServerButtonActionPerformed(java.awt.event.ActionEvent evt) {
}
private void stopButtonActionPerformed(java.awt.event.ActionEvent evt) {
}
/**
* #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(ChatBoxGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(ChatBoxGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(ChatBoxGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(ChatBoxGUI.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 ChatBoxGUI().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JLabel addressLabel;
private javax.swing.JButton connectServerButton;
private javax.swing.JTextArea inputOutputTextArea;
private javax.swing.JLabel jLabel1;
private javax.swing.JPanel jPanel1;
private javax.swing.JScrollPane jScrollPane2;
private javax.swing.JTextField outputTextField;
private javax.swing.JLabel portLabel;
private javax.swing.JButton startServerButton;
private javax.swing.JButton stopButton;
// End of variables declaration
}
Create Server Dialog:
public class CreateServerDialog extends javax.swing.JDialog {
private int port; private boolean isValid = false; private java.awt.Frame parent;
public int getPort() {
return port;
}
/**
* Creates new form CreateServerDialog
*/
public CreateServerDialog(java.awt.Frame par, boolean modal) {
super(par, modal);
parent = par;
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() {
jLabel1 = new javax.swing.JLabel();
portInput = new javax.swing.JTextField();
okButton = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
jLabel1.setText("Enter Port:");
okButton.setText("Ok");
okButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
okButtonActionPerformed(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()
.addComponent(okButton)
.addGap(0, 0, Short.MAX_VALUE))
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(portInput)
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel1)
.addGap(0, 0, Short.MAX_VALUE)))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jLabel1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(portInput, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(okButton))
);
pack();
}// </editor-fold>
private void okButtonActionPerformed(java.awt.event.ActionEvent evt) {
ErrorDialog errorDialog = new ErrorDialog(parent, true);
try {
port = Integer.parseInt(this.portInput.getText());
isValid = true;
} catch (NumberFormatException n) {
errorDialog.errorOccured(0);
isValid = false;
}
if (port <= 1024 || port > 65535) {
errorDialog.errorOccured(0);
isValid = false;
}
if (isValid == true) {
this.dispose();
}
}
/**
* #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(CreateServerDialog.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(CreateServerDialog.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(CreateServerDialog.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(CreateServerDialog.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the dialog */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
CreateServerDialog dialog = new CreateServerDialog(new javax.swing.JFrame(), true);
dialog.addWindowListener(new java.awt.event.WindowAdapter() {
#Override
public void windowClosing(java.awt.event.WindowEvent e) {
System.exit(0);
}
});
dialog.setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JLabel jLabel1;
private javax.swing.JButton okButton;
private javax.swing.JTextField portInput;
// End of variables declaration
}
Server Class:
import java.io.*;
import java.net.*;
public class ServerClass implements Runnable
{
private final ServerSocket serverSocket;
public ServerClass(int port) throws IOException
{
serverSocket = new ServerSocket(port);
}
public void run()
{
ChatBoxGUI chatBoxGUI = new ChatBoxGUI();
try {
chatBoxGUI.getTextArea().append("\nSearching for client connection. \nPort: " +serverSocket.getLocalPort()); //this is the code that isn't working
Socket server = serverSocket.accept();
System.out.println();
chatBoxGUI.setLabels(server.getLocalSocketAddress(), serverSocket.getLocalPort()); //this also isn't working - but that's not the focus of this question
DataOutputStream out = new DataOutputStream(server.getOutputStream());
DataInputStream in = new DataInputStream(server.getInputStream());
chatBoxGUI.getTextArea().append("\nClient found! Connected with: " +server.getRemoteSocketAddress());
//note: this part isn't finished - but it doesn't need to be for that code to work
} catch (IOException e) {
e.printStackTrace();
}
}
}
I've tried to do research on the problem, and what I've found tells me that I have to use either invokeLater or invokeAndWait when running the code so that it runs in the EDT. And I have tried to implement this but it still doesn't seem to work:
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
chatBoxGUI.getTextArea().append("\nSearching for client connection. \nPort: " +serverSocket.getLocalPort());
}
});
Similar output to the terminal works completely fine, so it's definitely an issue with appending the text.
Any help would be appreciated, and thanks in advance.

You have multiple instances of the ChatBoxGUI class, so you are not updating the text area that is visible on the desktop.
So first you create the ChatBoxGUI class. Then when you click on a button you create the ServerClass. In the ServerClass you create a second instance of the ChatBoxGUI.
Don't create the second instance of the ChatBoxGUI class!!!
Instead, if you want to access variables in the ChatBoxGUI class then you need to:
pass a reference of the ChatBoxGUI class to the ServerClass
save this reference as an instance variable in the ServerClass
access this variable when you want to add text to the text area.

Without a more complete example, all I can do is link you to this question that has an answer for a similar issue.
Or you could try changing your approach from:
public javax.swing.JTextArea getTextArea()
{
return inputOutputTextArea;
}
To:
public void setTextArea(String textToAppend)
{
inputOutputTextArea.append(textToAppend);
}

passing information from one jframe to another

To begin with, I know that using multiple jframes is frowned upon, unfortunately i have gotten myself to deep into this project to start over. my issue is i cannot find a way to transfer data (user input) from one frame to another, i will provide the code i need to be transferred from frame 1 to another frame
this is my code for the name and email they have to input
JTextArea txtrEnterYourFull = new JTextArea();
txtrEnterYourFull.setEditable(false);
txtrEnterYourFull.setFont(new Font("Lucida Grande", Font.PLAIN, 15));
txtrEnterYourFull.setBackground(Color.GRAY);
txtrEnterYourFull.setText("Enter your full name");
txtrEnterYourFull.setBounds(52, 58, 166, 29);
frame.getContentPane().add(txtrEnterYourFull);
nameL = new JTextField();
nameL.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
}
);
nameL.setBackground(Color.LIGHT_GRAY);
nameL.setBounds(52, 93, 284, 26);
frame.getContentPane().add(nameL);
nameL.setColumns(10);
JTextArea txtroptionalEnterYour = new JTextArea();
txtroptionalEnterYour.setEditable(false);
txtroptionalEnterYour.setFont(new Font("Lucida Grande", Font.PLAIN, 15));
txtroptionalEnterYour.setBackground(Color.GRAY);
txtroptionalEnterYour.setText("(Optional) Enter your email");
txtroptionalEnterYour.setBounds(52, 139, 193, 29);
frame.getContentPane().add(txtroptionalEnterYour);
textField_1 = new JTextField();
textField_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
here is the button code to go to the new frame
JButton btnContinue = new JButton("Continue");
btnContinue.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
frame2 fram = new frame2 ();
fram.setVisible(true);
frame.dispose();
i am new to swing and i dont need someone to complete my program. i just need to know how to carry it over to a new text box on a new frame.

Doing this is fairly easy. All you need to do is to set a constructor in which you are passing your frame with the values you need over to your new frame.
For example, I have a LoginScreen.java and DoctorScreen.java. If my user successfully entered his details and logs in, I transfer an ArrayList of Doctors from one JFrame to another JFrame, or more precisely, from one java class to another by creating a new instance of that class
Example here
Passing an arraylist from LoginScreen.java to DoctorScreen.java
DoctorScreen dScreen = new DoctorScreen(frame, docList,d);
Now Taking those values passed from LoginScreen.java and setting them in DoctorScreen.java
public DoctorScreen(JFrame frame, ArrayList<Doctor> docList, Doctor d) {
// TODO Auto-generated constructor stub
dialog = new JFileChooser(System.getProperty("user.dir"));
this.frame = frame;
this.docList = docList;
this.d = d;
initialize();
}
Now, you can change the DoctorScreen Constructor to fit into whatever project you are trying to do.
The steps I would advise you to take is to create a Java file for handling your input, and the second Java file to display what you entered in the first file
EG:
JButton btnContinue = new JButton("Continue");
btnContinue.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String field1 = txtrEnterYourFull.getText();
String name = nameL.getText();
String field2 = txtroptionalEnterYour.getText();
Display display = new Display(name, field1, field2);//using this as example
}
}
Then in your display.java, call your constructor taking in these fields and display them either in a textfield/textarea or in a JLabel in your frame
String name, field1, field2;
public Display(String name, String field1, String field2){
this.name = name;
this.field1 = field1;
this.field2 - field2;
}
Please take note that these variables have already been declared and I am merely using this for demonstration purposes.

Frames are like any other class, so just use the same kind of strategies you use to pass data between any other classes. For example you can simply create setter methods in your second frame class and call them from the first frame.
Note: This is just something I threw together really fast in Netbeans so there is a lot of generated code. Also, this is strictly an example I'm not saying it's necessarily the best way to do this.
Here is a quick and dirty example of how you might pass data between two JFrame objects:
This is the code to pay attention to from Frame1:
private void sendToOtherFrameBtnActionPerformed(java.awt.event.ActionEvent evt) {
Frame2 otherFrame = new Frame2();
otherFrame.setTextFieldText(jTextField1.getText());
otherFrame.setTextAreaText(jTextArea1.getText());
otherFrame.setVisible(true);
}
Here is the full code for Frame1:
public class Frame1 extends javax.swing.JFrame {
/**
* Creates new form Frame1
*/
public Frame1() {
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() {
jScrollPane1 = new javax.swing.JScrollPane();
jTextArea1 = new javax.swing.JTextArea();
jTextField1 = new javax.swing.JTextField();
sendToOtherFrameBtn = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jTextArea1.setColumns(20);
jTextArea1.setRows(5);
jTextArea1.setText("text area data");
jScrollPane1.setViewportView(jTextArea1);
jTextField1.setText("text field data");
sendToOtherFrameBtn.setText("Send To Other Frame");
sendToOtherFrameBtn.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
sendToOtherFrameBtnActionPerformed(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)
.addGroup(layout.createSequentialGroup()
.addGap(99, 99, 99)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 166, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(layout.createSequentialGroup()
.addGap(115, 115, 115)
.addComponent(sendToOtherFrameBtn)))
.addContainerGap(135, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGap(35, 35, 35)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(37, 37, 37)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 37, Short.MAX_VALUE)
.addComponent(sendToOtherFrameBtn, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(31, 31, 31))
);
pack();
}// </editor-fold>
private void sendToOtherFrameBtnActionPerformed(java.awt.event.ActionEvent evt) {
Frame2 otherFrame = new Frame2();
otherFrame.setTextFieldText(jTextField1.getText());
otherFrame.setTextAreaText(jTextArea1.getText());
otherFrame.setVisible(true);
}
/**
* #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(Frame1.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Frame1.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Frame1.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Frame1.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 Frame1().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextArea jTextArea1;
private javax.swing.JTextField jTextField1;
private javax.swing.JButton sendToOtherFrameBtn;
// End of variables declaration
}
Here is the important code from Frame2:
public void setTextFieldText(String txt){
jTextField1.setText(txt);
}
public void setTextAreaText(String txt){
jTextArea1.setText(txt);
}
Here is the full code for Frame2:
public class Frame2 extends javax.swing.JFrame {
/**
* Creates new form Frame2
*/
public Frame2() {
initComponents();
}
public void setTextFieldText(String txt){
jTextField1.setText(txt);
}
public void setTextAreaText(String txt){
jTextArea1.setText(txt);
}
/**
* 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();
jTextField1 = new javax.swing.JTextField();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jTextArea1.setColumns(20);
jTextArea1.setRows(5);
jScrollPane1.setViewportView(jTextArea1);
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(111, 111, 111)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jScrollPane1)
.addComponent(jTextField1))
.addContainerGap(123, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap(52, Short.MAX_VALUE)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(33, 33, 33)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(99, 99, 99))
);
pack();
}// </editor-fold>
/**
* #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(Frame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Frame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Frame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Frame2.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 Frame2().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextArea jTextArea1;
private javax.swing.JTextField jTextField1;
// End of variables declaration
}

Updating a java jframe

I am trying to update the text in a jtextarea stored in a class I created with the netbeans GUI tool.
In my server class I have the following code....
window is the name of the object instance
Message message = (Message) in.readObject();
window.addText(message.getMessage());
The getMessage meathod works and I can output text to the console using this method.
This is the code I have in the GUI class (window) to update the textarea:
public void addText(String txt)
{
jTextArea1.append(txt);
jTextArea2.append(txt);
jTextArea1.updateUI();
jTextArea1.revalidate();
jTextArea1.validate();
jTextArea2.updateUI();
jTextArea2.revalidate();
jTextArea2.validate();
}
However this isn't updating... the method is defiantly receiving the string as I have tried outputting to the console from there (with no problem).
Do I need to refresh the window somehow?
The full GUI class
package hunterinstant;
public class Conversation extends javax.swing.JFrame implements Runnable {
public Conversation() {
initComponents();
}
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jScrollPane1 = new javax.swing.JScrollPane();
jTextArea1 = new javax.swing.JTextArea();
jTextField1 = new javax.swing.JTextField();
jScrollPane2 = new javax.swing.JScrollPane();
jTextArea2 = new javax.swing.JTextArea();
jButton1 = new javax.swing.JButton();
jTextArea1.setColumns(20);
jTextArea1.setRows(5);
jScrollPane1.setViewportView(jTextArea1);
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jTextArea2.setColumns(20);
jTextArea2.setEditable(false);
jTextArea2.setRows(5);
jScrollPane2.setViewportView(jTextArea2);
jButton1.setText("Send");
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(jScrollPane2)
.addGroup(layout.createSequentialGroup()
.addComponent(jTextField1, javax.swing.GroupLayout.DEFAULT_SIZE, 294, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 80, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap()
.addComponent(jScrollPane2, javax.swing.GroupLayout.DEFAULT_SIZE, 243, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jTextField1)
.addComponent(jButton1, javax.swing.GroupLayout.DEFAULT_SIZE, 29, Short.MAX_VALUE))
.addContainerGap())
);
pack();
}// </editor-fold>
/**
* #param args the command line arguments
*/
public void run() {
/*
* 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(Conversation.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Conversation.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Conversation.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Conversation.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 Conversation().setVisible(true);
}
});
}
public void addText(String txt)
{
jTextArea1.append(txt);
jTextArea2.append(txt);
jTextArea1.updateUI();
jTextArea1.revalidate();
jTextArea1.validate();
jTextArea2.updateUI();
jTextArea2.revalidate();
jTextArea2.validate();
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JScrollPane jScrollPane2;
private javax.swing.JTextArea jTextArea1;
private javax.swing.JTextArea jTextArea2;
private javax.swing.JTextField jTextField1;
// End of variables declaration
}

How to have custom drag and drop support in Java Swing

I have enabled the default custom drag and support for a JTree, it works like a charm :)
I have one tree, one text and one editor pane, if I drag any node from the tree to the text area, it pastes the text, but when I do the same thing to the editor pane, it doesn't copy the plain text, it copies the text with bullet and changes the entire layout.
All I need is to copy the plain text to the editor pane, this only happens when I set the content type to "plain/text" when the change the content type it will copy with bullet symbol...
Is there any possibility that when I drop to the text area/editor pane, instead of name of node, it should place 'name of the node +"?"', I have googled it but only can find how to enable the drag and support for JLabel.
package testing_dragging;
import java.awt.datatransfer.DataFlavor;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JComponent;
import javax.swing.TransferHandler;
public class test_dragging_form extends javax.swing.JFrame {
/**
* Creates new form test_dragging_form
*/
public test_dragging_form() {
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() {
jScrollPane1 = new javax.swing.JScrollPane();
jTree1 = new javax.swing.JTree();
jScrollPane2 = new javax.swing.JScrollPane();
jTextArea1 = new javax.swing.JTextArea();
jScrollPane3 = new javax.swing.JScrollPane();
jEditorPane1 = new javax.swing.JEditorPane();
jLabel1 = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jTree1.setDragEnabled(true);
jTree1.addMouseMotionListener(new java.awt.event.MouseMotionAdapter() {
public void mouseMoved(java.awt.event.MouseEvent evt) {
jTree1MouseMoved(evt);
}
});
jScrollPane1.setViewportView(jTree1);
jTextArea1.setColumns(20);
jTextArea1.setRows(5);
jTextArea1.setDragEnabled(true);
jScrollPane2.setViewportView(jTextArea1);
try
{
jEditorPane1.setPage("file:///home/rocky/Desktop/test_plan_template.html");
}
catch(Exception ex)
{
System.out.println("Some exception occured"+ ex.getMessage());
}
jEditorPane1.setDragEnabled(true);
jScrollPane3.setViewportView(jEditorPane1);
jLabel1.setText("draglabel");
jLabel1.addMouseListener(new java.awt.event.MouseAdapter() {
public void mousePressed(java.awt.event.MouseEvent evt) {
jLabel1MousePressed(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(29, 29, 29)
.addComponent(jScrollPane1, 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(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(55, 55, 55)
.addComponent(jLabel1))
.addComponent(jScrollPane3, javax.swing.GroupLayout.PREFERRED_SIZE, 400, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(99, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGap(0, 12, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 163, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(layout.createSequentialGroup()
.addGap(47, 47, 47)
.addComponent(jLabel1)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jScrollPane3, javax.swing.GroupLayout.PREFERRED_SIZE, 200, javax.swing.GroupLayout.PREFERRED_SIZE))))
);
pack();
}// </editor-fold>
private void jTree1MouseMoved(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:
JComponent comp = (JComponent)evt.getSource();
TransferHandler handler = comp.getTransferHandler();
comp.setTransferHandler(handler);
handler.exportAsDrag(comp, evt, TransferHandler.COPY);
}
private void jLabel1MousePressed(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:
JComponent comp = (JComponent)evt.getSource();
TransferHandler handler = new TransferHandler("text");
comp.setTransferHandler(handler);
handler.exportAsDrag(comp, evt, TransferHandler.COPY);
}
/**
* #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(test_dragging_form.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(test_dragging_form.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(test_dragging_form.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(test_dragging_form.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 test_dragging_form().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JEditorPane jEditorPane1;
private javax.swing.JLabel jLabel1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JScrollPane jScrollPane2;
private javax.swing.JScrollPane jScrollPane3;
private javax.swing.JTextArea jTextArea1;
private javax.swing.JTree jTree1;
// End of variables declaration
}

I have a little experience with custom drag'n'drop and may be your problem has better solution, but this works:
Make your custom dropTarget for JEditorPane. It will pick the text/plain DataFlavor instead of default text/html one;
class JEditorPaneDropTarget extends DropTargetAdapter{
JEditorPaneDropTarget(JEditorPane pane) {
new DropTarget(pane, this);
}
#Override
public void drop(DropTargetDropEvent dtde) {
Transferable tr = dtde.getTransferable();
Object data;
try {
DataFlavor df = new DataFlavor("text/plain; class=java.lang.String");
data = tr.getTransferData(df);
JEditorPane pane = (JEditorPane) ((DropTarget)dtde.getSource()).getComponent();
pane.setText((String)data);
} catch (Exception e) {
//
}
}
}
Initialize it with your jEditorPane1 somewhere in initComponents():
new JEditorPaneDropTarget(jEditorPane1);
Here are no checks for possible null or cast exceptions, so you will need those too.
Read something about DataFlavors and how to use them. May be there is a way to mention right DataFlavor to use without writing whole custom DropTarget class, but i didn't find any.