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Gradient in an applet

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

public class JavaAppDe extends JApplet {
	
    public void init() {
    }
	
    public void paint (Graphics g) {
        super.paint(g);
	int base = 0;
	while(base<255) {
		g.setColor(new Color(base,base,base));
		g.drawLine(0,base,255,base);
		base++;
	}
    }
}

to java swing color applet awt gradient by kedare on Apr 25, 2007 1 Comments

Use AWTEventListener for Debugging Events

For debugging to help find where events are coming from, one can use AWTEventListeners to listen to all events that are dispatched. The following code shows an example that will print out the source component for all key events that are processed by AWT (and consequently Swing):

        Toolkit.getDefaultToolkit().addAWTEventListener(new AWTEventListener() {
 
            public void eventDispatched(AWTEvent event) {
                System.out.println(event.getSource());
 
            }
 
        }, AWTEvent.KEY_EVENT_MASK);

to java swing awt by kunstmusik on Feb 12, 2007

Enable custom FocusTraversalPolicy in Swing

Every container in Swing/AWT can be given a FocusTraversalPolicy with:

public void setFocusTraversalPolicy(FocusTraversalPolicy policy)

Remember to enable the container as a FocusCycleRoot:

setFocusCycleRoot(true)

Together it looks like:

container.setFocusTraversalPolicy(myCustomPolicy);
container.setFocusCycleRoot(true);

to java swing focus awt by llucifer on Oct 12, 2006