checkboxdemo.java

来自「这是我们上java课时自己编的几个测试小程序」· Java 代码 · 共 42 行

/**
 * @(#)CheckboxDemo.java
 *
 *
 * @author 
 * @version 1.00 2007/11/4
 */


import java.awt.*;
import java.applet.*;
import java.awt.event.*;
public class CheckboxDemo extends Applet implements ItemListener
{	String msg="";
	Checkbox win98,winNT,solaris,mac;
	public void init()
	{	win98=new Checkbox("Windows 98",true);
		winNT=new Checkbox("Windows NT/2000");
		solaris=new Checkbox("Solaris");
		mac=new Checkbox("MacOS");
		add(win98);	add(winNT);	add(solaris);	add(mac);
		win98.addItemListener(this);
		winNT.addItemListener(this);
		solaris.addItemListener(this);
		mac.addItemListener(this);
	}
		public void itemStateChanged(ItemEvent ie)
	{	repaint();	}
	public void paint(Graphics g)
	{	msg="Current state: ";
		g.drawString(msg,6,80);
		msg="Windows 98: "+win98.getState();
		g.drawString(msg,6,100);
		msg="Windows NT/2000: "+winNT.getState();
		g.drawString(msg,6,120);	
		msg="Solaris: "+solaris.getState();
		g.drawString(msg,6,140);
		msg="MacOS: "+mac.getState();
		g.drawString(msg,6,160);	
	}
}