flowlayoutdemo.java

来自「java2的应用软件」· Java 代码 · 共 42 行

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
/*<applet code="FlowLayoutDemo",width=250,height=200></applet>*/
public class FlowLayoutDemo extends Applet implements ItemListener
{
	String msg="";
	Checkbox Win98,WinNT,Linux,mac;
	public void init()
	{
		setLayout(new FlowLayout(FlowLayout.LEFT));
		Win98=new Checkbox("Win98",null,true);
		WinNT=new Checkbox("Win NT/2000");
		Linux=new Checkbox("Linux/Unix");
		mac=new Checkbox("MacOS");
		add(Win98);
		add(WinNT);
		add(Linux);
		add(mac);
		Win98.addItemListener(this);
		WinNT.addItemListener(this);
		Linux.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="Window 98:"+Win98.getState();
		g.drawString(msg,6,100);
		msg="Window NT/2000:"+WinNT.getState();
		g.drawString(msg,6,120);
		msg="Linux/Unix:"+Linux.getState();
		g.drawString(msg,6,140);
		msg="MacOS"+mac.getState();
		g.drawString(msg,6,160);
	}
}