JInternalFrame - JFileChooser()

Hi, I just had a quick question, I'm new to Java and just started using JInternalFrames and a JFileChooser() now my question is can I add a JFileChooser() to an internal frame so it would appear inside that internal frame and if so how?
Thanks for the help in advance.

neptune692 wrote:
Yes I have tried the following I think it should work but for some reason the open dialog is treated as a popup and is not inside the internal frame:
// this all looks OK to me
JInternalFrame internalframe = new JInternalFrame();
JFileChooser chooser = new JFileChooser();
internalframe.add(chooser);
// but this doesn't
chooser.showOpenDialog(internal);That last line will display the fille chooser as a dialog. Instead pack the internalframe, set it's location, and set it to visible.
Something like,
JInternalFrame internalframe = new JInternalFrame();
JFileChooser chooser = new JFileChooser();
internalframe.add(chooser);
internalframe.pack();
internalframe.setLocation(10, 10);
//not sure the name of your JDesktopPane
desktopPane.add(internalframe);
internalframe.setVisible(true);Edited by: Encephalopathic on May 23, 2009 12:46 PM

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That's not an error from Java, as far as I know. Something else is producing it. Look over these search results for a case that matches what you see:
http://www.google.com/search?q=error+31849

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The problem I have is rather tricky to explain. I feel maybe I'm treading on an area I'm not ready for yet... but here goes:
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The error message says it all:
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Hi everyone!!
please help me!!
When I open a new JInternalFrame in my created program and typed
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import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;
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Because you have only one textArea;
Here is a modified one>>Select the frame before do save
i used a seperate variable id to uniquely identify each textArea,you can use your count variable itself.
check the code u will know:
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import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;
import java.io.*;
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         } catch (Exception e) { }
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}

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I've been working on this Multiple Document Interface application, and things have been great up to this point. The user chooses to run a "report" and then selects an entity to get the info for. I then hit the database. Each row returned from the database query goes into it's own data object, which is added to an ArrayList in my custom table model, and that ArrayList is used to generate the JTable, which is then added to a ScrollPane, which is then added to the JInternalFrame, which is then added to the JDesktop pane. Good stuff, right?
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myiReportViewer.setBounds(0, 0, desktopPane.getWidth(), desktopPane.getHeight());
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desktopPane.add(myiReportViewer);
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}

JFileChooser (again!) slow in JRE 1.6.14 on some machines, not others

I am running ImageJ (from the NIH) on several of our machines and on some machines JFileChooser is lightning fast, while others exhibit the same slowness spoken of in another JFileChooser thread that is now in a locked state. We open large image files (tif, png) located on our SAN and from the network traffic I see in Windows Task Manager while opening a folder containing the images I would guess that JFileChooser is actually opening the files (intentionally or not), not just obtaining a folder listing. It's similar to the same issue of opening a large folder of images with the view set to thumbnails - it takes about the same amount of time. I have tried the suggestions in that thread to no avail - the environment the machines are running is:
Windows XP SP3
Java JRE 1.6.0_14
Can anyone comment on what JFileChooser is doing and how I can get it to stop this? Is it a Windows environment setting so that the native API calls made by JFileChooser will behave differently? Thoughts?
Thanks,
Tom

I can't be absolutely sure, but we have several seemingly identical machines used for the purpose of reading medical images and several of them appear to work correctly (very fast loading and population of the folder's contents) and others don't. I have been using eclipse to enhance the software tool we're using (ImageJ) and using the debugger I can see that when the JFileChooser object is being instantiated and populated with entries a tremendous amount of network traffic occurs. This network traffic is equivalent to the amount I see when the same folder is opened in My Computer using a thumbnails view of the folder contents. Apparently, the network is delivering approximately 300-400 MB of images. As far as configuration of the Windows machines is concerned I haven't found a significant difference yet, though I admit I am not a Windows desktop admin and may not know of some configuration item that could be responsible. I assume (though could be mistaken) that both My Computer and JFileChooser are ultimately using similar API calls to get the folder content entries?

JInternalFrame drawing problem.

Hi gurus
Please could you help with a java problem that I cant find an answer to over the net:
I have a JDesktop which contains multiple JInternalFrames. On one JInternalFrame i have attached a JPanel on which to draw on. I have multiple threads (simple ball shapes) that need to be drawn onto the JPanel and have left it up to the indivual threads to draw themselves (as opposed to using paintComponent in the JPanel class). The drawing on the JInternalFrame works perfectly fine.
The problem arises when the other JInternalFrames are placed on top of each other - the balls are drawn over the top most JInternalFrame. What am i doing wrong? I have attached snippets of the code:
public class Desktop extends JFrame implements ActionListener
          public Desktop()
                    setTitle("Agent's world");
                    setSize(w,h);
                    setDefaultCloseOperation(EXIT_ON_CLOSE);
                    JDesktopPane desktop = new JDesktopPane();
                    setContentPane(desktop);
                    /************* Agent *************/
                    JInternalFrame agents = new JInternalFrame("Agents War", true, false, true, false);
                    agents.reshape(0,0,(int)((w/3)*2),h);
                    Container contentPane = agents.getContentPane();
                    canvas = new AgentPanel(agents);
                    contentPane.add(canvas);
                    /************* Button *************/
                    JPanel buttonPanel = new JPanel();
                    ButtonGroup buttonGroup = new ButtonGroup();
                    JButton start = new JButton("START");
                    start.addActionListener(this);
                    buttonPanel.add(start);
                    contentPane.add(buttonPanel, "North");
                    agents.setVisible(true);
                    desktop.add(agents);
                    //sets focus to other frames within the desktop
                    try
                              agents.setSelected(true);
                    catch(PropertyVetoException e)
                              //attempt to refocus was vetoed by a frame
          /** Method to listen for event actions, i.e. button clicks **/
     public void actionPerformed(ActionEvent event)
               //passes through 'this' to allow access to the getList method
               Agents agent = new Agents(canvas, this);
               agent.start();
public class Agents extends Thread
          public Agents(AgentPanel panel, Desktop desktop)
                    panel =_panel;
                    desktop = _desktop;
                    setDaemon(true);
/** Moves the agent from a spefic position to a new position **/
          public void move()
                    Graphics g = panel.getGraphics();
                    Graphics2D g2 = (Graphics2D)g;
                    try
                              //set XOR mode
                              g.setXORMode(panel.getBackground());
                              //draw over old
                              Ellipse2D.Double ballOld = new Ellipse2D.Double(i , j, length, length);
                              g2.fill(ballOld);
                              i++;
                              j++;
                              if(flag == true)
                                        //draw new
                                        Ellipse2D.Double ballNew = new Ellipse2D.Double(i , j, length, length);
                                        g2.fill(ballNew);
                                        g2.setPaintMode();
                    finally
                              g.dispose();
          /** Activates the Thread **/
          public void run()
               int i = 0;
               while(!interrupted() && i<100)
                    try
                                   for(i = 0 ; i <100 ; i++)
                                             //draw ball in old position                                             move();
                                             sleep(100);
                         catch(InterruptedException e)
public class AgentPanel extends JPanel
          /** local copy of internal frame */
          private JInternalFrame frame;
          public AgentPanel(JInternalFrame _frame)
                    frame = _frame;
                    setSize(frame.getWidth(), frame.getHeight());
                    setBackground(Color.white);
          public void paintComponent(Graphics g)
                    super.paintComponent(g);
Thank you in advance.
Ravs

I have the same problem. Seems to be a bug. See:
http://forum.java.sun.com/thread.jsp?forum=57&thread=231037
Bummer.

Need to convert a JFrame to an jinternalframe

Hello,
I have an application that is comprised of 7 classes. I'm attempting to rewrite it so that the one class that I have which is for the JFrame is converted to an internal frame so that I can add the complete application to the desktop pane of a gui which I've created, to be a part of a bigger application. I've tried the code that converts JFrames to JInternalFrames but that doesn't seem to work, maybe I'm missing something here. I'm relatively new to the Java Programming world but I'm moving along. Any help is more than welcomed.

Hello,
I don't think you can directly convert a JFrame to JInternalFrame
But panels are compatible
(for example you can do this : yourJInternalFrame.setContent(yourJFrame.getContent);
When i program in java, my main classes extends JPanel and not JFrame or JInternalFrame, then you can use this application into every frames or applets :)
If you do that, set in your main:
JFrame myJFrame = new JFrame(...);
MyClass myClassWhichExtendsJPanel = new MYClass(...);
yourJFrame.setContent(myClassWhichExtendsJPanel);

Repaint Problem in JInternalFrame!!!! help plz.

hi,
I have a question I have an application that has internal frames, Basically it is a MDI Application. I am using JDK 1.2.2 and windows 2000. The following example shows that when I drag my JInternalFrames only the border is shown and the contents are not shown as being dragged that's fine, but the application I am running have lot of components in my JInternalFrames. And when I drag the JInternalFrame my contents are not being dragged and that's what I want but when I let go the internalFrame it takes time to repaint all the components in the internalFrame. Is there any way I can make the repaint goes faster after I am done dragging the internalFrame. It takes lot of time to bring up the internalframe and it's components at a new location after dragging. Is there a way to speed up the repainting. The following example just shows how the outline border is shown when you drag the internalFrame. As there are not enough components in the internal frame so shows up quickly. But when there are lots of components specially gif images inside the internalframe it takes time.
/*************** MDITest ************/
import javax.swing.*;
* An application that displays a frame that
* contains internal frames in an MDI type
* interface.
* @author Mike Foley
public class MDITest extends Object {
* Application entry point.
* Create the frame, and display it.
* @param args Command line parameter. Not used.
public static void main( String args[] ) {
try {
UIManager.setLookAndFeel(
"com.sun.java.swing.plaf.windows.WindowsLookAndFeel" );
} catch( Exception ex ) {
System.err.println( "Exception: " +
ex.getLocalizedMessage() );
JFrame frame = new MDIFrame( "MDI Test" );
frame.pack();
frame.setVisible( true );
} // main
} // MDITest
/*********** MDIFrame.java ************/
import java.awt.*;
import java.awt.event.*;
import java.io.Serializable;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.event.*;
* A top-level frame. The frame configures itself
* with a JDesktopPane in its content pane.
* @author Mike Foley
public class MDIFrame extends JFrame implements Serializable {
* The desktop pane in our content pane.
private JDesktopPane desktopPane;
* MDIFrame, null constructor.
public MDIFrame() {
this( null );
* MDIFrame, constructor.
* @param title The title for the frame.
public MDIFrame( String title ) {
super( title );
* Customize the frame for our application.
protected void frameInit() {
// Let the super create the panes.
super.frameInit();
JMenuBar menuBar = createMenu();
setJMenuBar( menuBar );
JToolBar toolBar = createToolBar();
Container content = getContentPane();
content.add( toolBar, BorderLayout.NORTH );
desktopPane = new JDesktopPane();
desktopPane.putClientProperty("JDesktopPane.dragMode", "outline");
desktopPane.setPreferredSize( new Dimension( 400, 300 ) );
content.add( desktopPane, BorderLayout.CENTER );
} // frameInit
* Create the menu for the frame.
* <p>
* @return The menu for the frame.
protected JMenuBar createMenu() {
JMenuBar menuBar = new JMenuBar();
JMenu file = new JMenu( "File" );
file.setMnemonic( KeyEvent.VK_F );
JMenuItem item;
file.add( new NewInternalFrameAction() );
// file.add( new ExitAction() );
menuBar.add( file );
return( menuBar );
} // createMenuBar
* Create the toolbar for this frame.
* <p>
* @return The newly created toolbar.
protected JToolBar createToolBar() {
final JToolBar toolBar = new JToolBar();
toolBar.setFloatable( false );
toolBar.add( new NewInternalFrameAction() );
// toolBar.add( new ExitAction() );
return( toolBar );
* Create an internal frame.
* A JLabel is added to its content pane for an example
* of content in the internal frame. However, any
* JComponent may be used for content.
* <p>
* @return The newly created internal frame.
public JInternalFrame createInternalFrame() {
JInternalFrame internalFrame =
new JInternalFrame( "Internal JLabel" );
internalFrame.getContentPane().add(
new JLabel( "Internal Frame Content" ) );
internalFrame.setResizable( true );
internalFrame.setClosable( true );
internalFrame.setIconifiable( true );
internalFrame.setMaximizable( true );
internalFrame.pack();
return( internalFrame );
* An Action that creates a new internal frame and
* adds it to this frame's desktop pane.
public class NewInternalFrameAction extends AbstractAction {
* NewInternalFrameAction, constructor.
* Set the name and icon for this action.
public NewInternalFrameAction() {
super( "New", new ImageIcon( "new.gif" ) );
* Perform the action, create an internal frame and
* add it to the desktop pane.
* <p>
* @param e The event causing us to be called.
public void actionPerformed( ActionEvent e ) {
JInternalFrame internalFrame = createInternalFrame();
desktopPane.add( internalFrame,
JLayeredPane.DEFAULT_LAYER );
} // NewInternalFrameAction
} // MDIFrame
I'll really appreciate for any help.
Thank you

Hi
if you fill the ranges
r_rundate-sign = 'I'.
r_rundate-option = 'EQ'.
r_rundate-low = '20080613'.
r_rundate-high = '20080613'.
APPEND r_rundate.
EQ = 'equal', the select check the record with data EQ r_rundate-low.
change EQ with BT
BT = between
r_rundate-sign = 'I'.
r_rundate-option = 'BT'.
r_rundate-low = '20080613'.
r_rundate-high = '20080613'.
APPEND r_rundate.
reward if useful, bye

Problems getting data from JMenuBar to JInternalFrame

I have modified an example to show my problem. I am trying to take text input from the menu bar and print it into a JTextArea. I don't know how to reference the data in my ActionListener.
The ActionListener is incomplete, but this is basically what I am trying to do:
import javax.swing.JInternalFrame;
import javax.swing.JDesktopPane;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.JMenuBar;
import javax.swing.JFrame;
import javax.swing.KeyStroke;
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
* InternalFrameDemo.java is a 1.4 application that requires:
*   MyInternalFrame.java
public class InternalFrameDemo extends JFrame
                               implements ActionListener {
    JDesktopPane desktop;
    JTextField memAddrBox;
    JTextArea menuText;
    JTextArea frame;
    String textFieldString = " Input Text: ";
    ActionListener al;
    public InternalFrameDemo() {
        super("InternalFrameDemo");
        //Make the big window be indented 50 pixels from each edge
        //of the screen.
        int inset = 50;
        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        setBounds(inset, inset,
                  screenSize.width - inset*2,
                  screenSize.height - inset*2);
        //Set up the GUI.
        desktop = new JDesktopPane(); //a specialized layered pane
        frame = createFrame(); //create first "window"
        setContentPane(desktop);
        setJMenuBar(createMenuBar());
        //Make dragging a little faster but perhaps uglier.
        desktop.setDragMode(JDesktopPane.OUTLINE_DRAG_MODE);
    protected JMenuBar createMenuBar() {
        JMenuBar menuBar = new JMenuBar();
        JLabel memAddrLabel = new JLabel(textFieldString);
        memAddrLabel.setLabelFor(memAddrBox);
        menuBar.add(memAddrLabel);
        JTextField memAddrBox = new JTextField();
        memAddrBox.addActionListener(this);
        memAddrBox.setActionCommand("chMemAddr");
        menuBar.add(memAddrBox);
        return menuBar;
    //React to menu selections.
    public void actionPerformed(ActionEvent e) {
        if ("chMemAddr".equals(e.getActionCommand()))
            JMenuBar bar = getJMenuBar();
//            JTextField memAddrBox = bar.getParent();
            String memStartString = memAddrBox.getText();
            update(memStartString);
    public void update(String temp)
        frame.setText(temp);
    //Create a new internal frame.
    protected JTextArea createFrame() {
        JInternalFrame frame = new JInternalFrame("Memory",true,true,true,true);
        frame.setSize(650, 500);
        frame.setVisible(true);
        frame.setLocation(200, 0);
        desktop.add(frame);
        JTextArea textArea = new JTextArea();
        frame.getContentPane().add("Center", textArea);
        textArea.setFont(new Font("SansSerif", Font.PLAIN, 12));
        textArea.setVisible(true);
        textArea.setText("Initial Text");
        return textArea;
    //Quit the application.
    protected void quit() {
        System.exit(0);
    public static void main(String[] args) {
        //Make sure we have nice window decorations.
        JFrame.setDefaultLookAndFeelDecorated(true);
        //Create and set up the window.
        InternalFrameDemo frame = new InternalFrameDemo();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        //Display the window.
        frame.setVisible(true);
class MyInternalFrame extends JInternalFrame {
    static int openFrameCount = 0;
    static final int xOffset = 30, yOffset = 30;
    public MyInternalFrame() {
        super("Document #" + (++openFrameCount),
              true, //resizable
              true, //closable
              true, //maximizable
              true);//iconifiable
        //...Create the GUI and put it in the window...
        //...Then set the window size or call pack...
        setSize(300,300);
        //Set the window's location.
        setLocation(xOffset*openFrameCount, yOffset*openFrameCount);
}I want to take the input from the "memAddrBox" and put it into the "frame" using the update() method. Probably a simple solution, but I have not found a similar problem in the Forums.

I knew it had to be something simple, here is the fix I found:
import javax.swing.JInternalFrame;
import javax.swing.JDesktopPane;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.JMenuBar;
import javax.swing.JFrame;
import javax.swing.KeyStroke;
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
* InternalFrameDemo.java is a 1.4 application that requires:
*   MyInternalFrame.java
public class InternalFrameDemo extends JFrame
                               implements ActionListener {
    JDesktopPane desktop;
    JTextField memAddrBox;
    JTextArea menuText;
    JTextArea frame;
    String textFieldString = " Input Text: ";
    ActionListener al;
    public InternalFrameDemo() {
        super("InternalFrameDemo");
        //Make the big window be indented 50 pixels from each edge
        //of the screen.
        int inset = 50;
        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        setBounds(inset, inset,
                  screenSize.width - inset*2,
                  screenSize.height - inset*2);
        //Set up the GUI.
        desktop = new JDesktopPane(); //a specialized layered pane
        frame = createFrame(); //create first "window"
        setContentPane(desktop);
        setJMenuBar(createMenuBar());
        //Make dragging a little faster but perhaps uglier.
        desktop.setDragMode(JDesktopPane.OUTLINE_DRAG_MODE);
    protected JMenuBar createMenuBar() {
        JMenuBar menuBar = new JMenuBar();
        JLabel memAddrLabel = new JLabel(textFieldString);
        memAddrLabel.setLabelFor(memAddrBox);
        menuBar.add(memAddrLabel);
        JTextField memAddrBox = new JTextField();
        memAddrBox.addActionListener(this);
        memAddrBox.setActionCommand("chMemAddr");
        menuBar.add(memAddrBox);
        return menuBar;
    //React to menu selections.
    public void actionPerformed(ActionEvent e) {
        if ("chMemAddr".equals(e.getActionCommand()))
           JTextField textField =
             (JTextField)e.getSource();
            String memStartString = textField.getText();
            update(memStartString);
    public void update(String temp)
        frame.setText(temp);
    //Create a new internal frame.
    protected JTextArea createFrame() {
        JInternalFrame frame = new JInternalFrame("Memory",true,true,true,true);
        frame.setSize(650, 500);
        frame.setVisible(true);
        frame.setLocation(200, 0);
        desktop.add(frame);
        JTextArea textArea = new JTextArea();
        frame.getContentPane().add("Center", textArea);
        textArea.setFont(new Font("SansSerif", Font.PLAIN, 12));
        textArea.setVisible(true);
        textArea.setText("Initial Text");
        return textArea;
    //Quit the application.
    protected void quit() {
        System.exit(0);
    public static void main(String[] args) {
        //Make sure we have nice window decorations.
        JFrame.setDefaultLookAndFeelDecorated(true);
        //Create and set up the window.
        InternalFrameDemo frame = new InternalFrameDemo();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        //Display the window.
        frame.setVisible(true);
class MyInternalFrame extends JInternalFrame {
    static int openFrameCount = 0;
    static final int xOffset = 30, yOffset = 30;
    public MyInternalFrame() {
        super("Document #" + (++openFrameCount),
              true, //resizable
              true, //closable
              true, //maximizable
              true);//iconifiable
        //...Create the GUI and put it in the window...
        //...Then set the window size or call pack...
        setSize(300,300);
        //Set the window's location.
        setLocation(xOffset*openFrameCount, yOffset*openFrameCount);
}Note the e.getSource() change in the ActionListener.

Opening a Second JInternalFrame

Below I have two classes InternalFrameDemo instantiates MyInternalFrame (extends javax.swing.JInternalFrame ) in doing this the application creates a JDesktopPane and creates a MyInternalFrame to put in it.
What I want to happen is when the jButton1 on the MyInternalFrame is clicked is for a second MyInternalFrame to open and the first MyInternalFrame to close is this possible?
I think that I would need to have the action Method in MyInternalFrame trigger a method call in the InternalFrameDemo and do the closing and opening of new MyInternalFrame from there?
Thanks
package components;
import javax.swing.JInternalFrame;
import javax.swing.JDesktopPane;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.JMenuBar;
import javax.swing.JFrame;
import javax.swing.KeyStroke;
import java.awt.event.*;
import java.awt.*;
public class InternalFrameDemo extends JFrame
implements ActionListener {
JDesktopPane desktop;
public InternalFrameDemo() {
super("InternalFrameDemo");
int inset = 50;
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
setBounds(inset, inset,
screenSize.width - inset*2,
screenSize.height - inset*2);
desktop = new JDesktopPane();
createFrame();
setContentPane(desktop);
setJMenuBar(createMenuBar());
desktop.setDragMode(JDesktopPane.OUTLINE_DRAG_MODE);
protected JMenuBar createMenuBar() {
JMenuBar menuBar = new JMenuBar();
JMenu menu = new JMenu("Document");
menu.setMnemonic(KeyEvent.VK_D);
menuBar.add(menu);
JMenuItem menuItem = new JMenuItem("New");
menuItem.setMnemonic(KeyEvent.VK_N);
menuItem.setAccelerator(KeyStroke.getKeyStroke(
KeyEvent.VK_N, ActionEvent.ALT_MASK));
menuItem.setActionCommand("new");
menuItem.addActionListener(this);
menu.add(menuItem);
return menuBar;
public void actionPerformed(ActionEvent e) {
if ("new".equals(e.getActionCommand())) {
createFrame();
} else {
quit();
protected void createFrame() {
MyInternalFrame frame = new MyInternalFrame();
frame.setVisible(true);
desktop.add(frame);
try {
frame.setSelected(true);
} catch (java.beans.PropertyVetoException e) {}
MyInternalFrame frame2 = new MyInternalFrame();
frame.setVisible(true);
desktop.add(frame2);
try {
frame2.setSelected(true);
} catch (java.beans.PropertyVetoException e) {}
public void closeWin(){
protected void quit() {
System.exit(0);
private static void createAndShowGUI() {
JFrame.setDefaultLookAndFeelDecorated(true);
InternalFrameDemo frame = new InternalFrameDemo();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
public static void main(String[] args) {
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
/*MyInternalFrame */
package components;
public class MyInternalFrame extends javax.swing.JInternalFrame {
@SuppressWarnings("unchecked")
private void initComponents() {
jButton1 = new javax.swing.JButton();
jButton1.setText("jButton1");
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()
.addGap(152, 152, 152)
.addComponent(jButton1)
.addContainerGap(169, Short.MAX_VALUE))
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(108, 108, 108)
.addComponent(jButton1)
.addContainerGap(147, Short.MAX_VALUE))
pack();
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
this.dispose();
private javax.swing.JButton jButton1;
}

Don't forget to use the Code Formatting Tags so the posted code retains its original formatting. That is done by selecting the code and then clicking on the "Code" button above the question input area.
I think that I would need to have the action Method in MyInternalFrame trigger a method call in the InternalFrameDemo and do the closing and opening of new MyInternalFrame from there?Correct. So give it a try and see what happens.

JInternalFrame - JFileChooser()

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