[RESOLVED] JFrame and JApplet Center on screen

Hi,

What's the method/code for centering a Japplet or JFrame on a monitor screen when loaded?

Thanks... :) :) :)

This should do it:

Code:

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JFrame main = new JFrame();
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
...(set the size and all that)...
main.setLocation(((screenSize.width / 2) - (main.width / 2)),
                  ((screenSize.height / 2) - (main.height / 2)) );

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Quote:

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Originally Posted by KGComputers

Hi,

What's the method/code for centering a Japplet or JFrame on a monitor screen when loaded?

Thanks... :) :) :)

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Applets are centered by HTML not by java code

Quote:

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Originally Posted by KGComputers

Hi,

What's the method/code for centering a Japplet or JFrame on a monitor screen when loaded?

Thanks... :) :) :)

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I was answering that part, for the JFrame

Code:

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

public class CenterJFrame{
      public static void main(String[] a){

                JFrame main = new JFrame();
       
                main.setSize(new Dimension(400,500));
                Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
                //..(set the size and all that)...
                main.setLocation(((screenSize.width / 2) - (main.width / 2)),
                      ((screenSize.height / 2) - (main.height / 2)) );
        main.setVisible(true);
}
}

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Hi, when experimenting your code I got an error message...Am I missing something? Is it the package to import?

Here's the error message..

Quote:

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D:\java programs\swing API\CenterJFrame.java:15: width is not public in java.awt.Component; cannot be accessed from outside package
main.setLocation(((screenSize.width / 2) - (main.width / 2)),
^
D:\java programs\swing API\CenterJFrame.java:16: height is not public in java.awt.Component; cannot be accessed from outside package
((screenSize.height / 2) - (main.height / 2)) );
^

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:) :) :)

Oh yeah, sorry about that. The main.width and main.height should be main.getWidth() and main.getHeight().

Hi,

Thanks for the help...

Greg :thumb: :) :thumb:

There was some othe way of doing this, but I honestly don't remember how. If I ever think of it, then I'll post it here.

Hi,

Glad if you can add some code...Thanks in advance...If you can post an html code on how to center a JApplet on screen, that would be fine also...

Greg :) :) :)

HTML Code:

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<applet width="300" height="300" code="applet1.class">
                        <param name="param1" value="value" />
                        Please install java
                </applet>

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