JButton and a new Frame

[kalar]

Hello. I got a problem with a JButton in a game that i am making.
I have a mainFrame that is where we play the game.In this class i have a main method in order to test it.We also have a first window.In first window we have a button play and when we push it , we show the mainFrame.

The problem: When i push the button it shows me the mainFrame but all the window is white.( i should see some pictures and buttons)

In actionPerformed method i copy paste the code of the main class of mainFrame, which works correctly, so i guess that it will works also correct in actionPerformed ,but no.
thanks

[JosAH]

Your button's actionPerformed () method runs in the AWT thread so that thread
is busy and doesn't have any time left to do all your drawing operations. When
you did the same from your main() method you did the frame initialization in
another thread leaving the AWT thread free to do all the drawing.

Never keep the AWT thread busy (for too long), i.e. do your mainFrame setup
and stuff in another thread. Have a look at the SwingUtilities and Thread
classes.

kind regards,

Jos

[kalar]

Thank you jos but i wouldn't like to learn about threads now.I don't have the time.
Is there any way to close the first window(not to setVisible(fals e) but close it) and then run the main from the other class?(all these in Action Performed)

[JosAH]

Thank you jos but i wouldn't like to learn about threads now.I don't have the time.
Is there any way to close the first window(not to setVisible(fals e) but close it) and then run the main from the other class?(all these in Action Performed)

Simply use the SwingUtilities class; now you have something like this:

[code=java]
public void actionPerformed (ActionEvent ae) {
<do something here>
}
[/code]

All you have to do is change it to this:

[code=java]
public void actionPerformed (ActionEvent ae) {
SwingUtilities. invokeLater(new Runnable() {
public void run() {
<do something here>
}
});
}[/code]

This invokes whatever needs to be done later when the AWT thread has nothing
to do anymore. Read the API documentation for details.

kind regards,

Jos

[kalar]

i make what you say jos but it didn't work.Look now what it happens(i delete the picture in the first window)


when i push play it opens the second window,it plays the music that i have put but it shows me back of the screen ,the first window and the code in Jcreator,which i have open him

[JosAH]

i make what you say jos but it didn't work.Look now what it happens(i delete the picture in the first window)


when i push play it opens the second window,it plays the music that i have put but it shows me back of the screen ,the first window and the code in Jcreator,which i have open him

I don't know what you're doing in that actionPerformed () method so I can't give
you a reasonable answer; but it does activate the code? It just doesn't display
the other frame? Please elaborate.

kind regards,

Jos

[kalar]

I don't know what you're doing in that actionPerformed () method so I can't give
you a reasonable answer; but it does activate the code? It just doesn't display
the other frame? Please elaborate.

kind regards,

Jos

so in ActionPerformed i am doing:

    public void actionPerformed(ActionEvent e)
    {
    	if ("play".equals(e.getActionCommand()))
    	{
    	SwingUtilities.invokeLater(new Runnable() {
  
            public void run() {
  
             Game.modif();//this  just fill some arrays
             Game frame = new Game();//here is the mainFrame of the game
             frame.setVisible(true);
        

             //this just play a sound
             AudioClip click;
             URL urlClick = Game.class.getResource("slow.wav");
             click = Applet.newAudioClip(urlClick);
             click.loop();
             frame.play();
       
      
  
            }
  
         });
        
       	
    	}

[JosAH]

so in ActionPerformed i am doing:

    public void actionPerformed(ActionEvent e)
    {
    	if ("play".equals(e.getActionCommand()))
    	{
    	SwingUtilities.invokeLater(new Runnable() {
  
            public void run() {
  
             Game.modif();//this  just fill some arrays
             Game frame = new Game();//here is the mainFrame of the game
             frame.setVisible(true);
        

             //this just play a sound
             AudioClip click;
             URL urlClick = Game.class.getResource("slow.wav");
             click = Applet.newAudioClip(urlClick);
             click.loop();
             frame.play();
       
      
  
            }
  
         });
        
       	
    	}

Ok, now carefully tell us what happens and shouldn't happen and what doesn't
happen that should. As I understand from your previous message the sound
plays (check) and the window is shown (also check). What is wrong?

kind regards,

Jos

[kalar]

yes the sound plays but as you can see in the image in my post the second window doesn' t show anything. It shows the first window and the code from jcreator that is opened behined the programm.
it should be like this the second window

i take this picture when i run the main method from the mainFrame game
this main has the same code with this in ActionPerformed

[JosAH]

yes the sound plays but as you can see in the image in my post the second window doesn' t show anything. It shows the first window and the code from jcreator that is opened behined the programm.
it should be like this the second window

i take this picture when i run the main method from the mainFrame game
this main has the same code with this in ActionPerformed

All this only implies that your code (possibly in your other frame) obstructs the
AWT thread so it can't draw anything anymore. Try the following little hack:

[code=java]
public void actionPerformed (ActionEvent ae) {
new Thread(new Runnable() {
public void run() {
<do something here>
}
}).start();
}
[/code]

This lifts all your code into another thread and shouldn't block the AWT thread.

kind regards,

Jos

[kalar]

Thank you Jos!!!! It works.
Now is there a way to close only the first window(it goes back from the mainFrame of the game ) or the first Thread(if i say it correct) and leave the mainFrame of the game or the second thread as it is in order to play?

[JosAH]

Thank you Jos!!!! It works.
Now is there a way to close only the first window(it goes back from the mainFrame of the game ) or the first Thread(if i say it correct) and leave the mainFrame of the game or the second thread as it is in order to play?

Sure, what do you think JFrame.dispose( ) or JFrame.setVisib le(false) do?

kind regards,

Jos