Switching between two JFrame objects

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George - 21 Feb 2008 01:29 GMT

Dear All,

I am a bit puzzled as to how to accomplish a task that looks simple. I
have two Jframes and each of them contains a button. I want to be able to
hide the one that has the button I click on and show the other. I wrote
the following code for that:

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ButtonQuitter extends JFrame implements ActionListener
{
JButton bQuit = new JButton("Click here to Exit");

public ButtonQuitter()
{
getContentPane().setLayout( new FlowLayout() );
bQuit.addActionListener( this );
getContentPane().add( bQuit );
}
public static void newGui(){
    ButtonQuitter frame = new ButtonQuitter();
ButtonQuitter frame12 = new ButtonQuitter();

frame.setSize( 200, 150 );
frame.setVisible( true );
frame12.setSize( 200, 150 );
frame12.setVisible( false );

}
public void actionPerformed( ActionEvent evt)
{
    this.setVisible(false);
    frame12.setVisible(true);
}

public static void main ( String[] args )
{
newGui();

}
}

However, when I run it, it complains that frame12 can not be resolved.
Could someone please offer some suggestions as to how to proceed?

Many Thanks,
George

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Knute Johnson - 21 Feb 2008 04:19 GMT

> Dear All,
>
[quoted text clipped - 45 lines]
> Many Thanks,
> George

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class test {
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
final JFrame f1 = new JFrame("One");
final JFrame f2 = new JFrame("Two");

f1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f2.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

f1.setLocationByPlatform(true);
f2.setLocationByPlatform(true);

JButton b1 = new JButton("Close the other frame");
b1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
f2.setVisible(false);
}
});

f1.add(b1,BorderLayout.CENTER);

JButton b2 = new JButton("Close the other frame");
b2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
f1.setVisible(false);
}
});

f2.add(b2,BorderLayout.CENTER);

f1.pack();
f2.pack();

f1.setVisible(true);
f2.setVisible(true);
}
});
}
}

Signature

Knute Johnson
email s/nospam/knute/

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Switching between two JFrame objects

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