test.java

《Java2图形设计卷II：Swing》配套光盘源码

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

public class Test extends JApplet {
	private JLayeredPane lp = new JLayeredPane();

	private Integer[] layers = {
		JLayeredPane.FRAME_CONTENT_LAYER,
		JLayeredPane.DEFAULT_LAYER,
		JLayeredPane.PALETTE_LAYER,
		JLayeredPane.MODAL_LAYER,
		JLayeredPane.POPUP_LAYER,
		JLayeredPane.DRAG_LAYER,
	};
	private final Component[] comps = {
		new JButton("Frame Content"), new JButton("Default"), 
		new JButton("Palette"), new JButton("Modal"), 	
		new JButton("Popup"), new JButton("Drag"), 
	};
	public void init() {
		setContentPane(lp);
		lp.setLayout(null);

		for(int i=0; i < comps.length; ++i) {
			AbstractButton button = (AbstractButton)comps[i];

			System.out.println("Adding: " + button.getText());

			lp.setLayer(button, layers[i].intValue());
			lp.add(button);
		}
		for(int i=0; i < comps.length; ++i) {
			AbstractButton button = (AbstractButton)comps[i];
			String t = button.getText();
			String replacement = new String("Layer:  ");

			replacement += t + "(" + lp.getLayer(button) + "),";
			replacement += "  Index:  " + lp.getIndexOf(button);

			button.setText(replacement);
			button.setBounds(i*50, i*50, 350, 75);		
		}
	}
}