import java.awt.graphics;
import java.awt.event;
import java.awt.color;
public class mouse extends java.applet.applet
{
int num=0;//计数器初始化
int px,py;
public boolean mousedown(event evt,int x,int y)//鼠标按下事件
{
px=x;
py=y;//鼠标按下时的坐标
num++;//计数器加1
repaint();//重画窗口
return true;//返回true,表示事件处理过了
}
public void update(graphics g)
{
g.setcolor(getbackground());//以背景色取出一快区域
g.fillrect(10,300,200,60);
paint(g);//调用paint方法
}
public void paint(graphics g)
{
g.setcolor(color.green);
g.drawstring("当前鼠标的坐标是("+px+","+py+")",10,300);//输出当前鼠标的坐标
g.drawstring("this is no."+num+"point",10,340);//输出点击次数
g.setcolor(color.red);//在鼠标点击位置画出一个红叉
g.drawline(px-5,py-5,px+5,py+5);
g.drawline(px+5,py-5,px-5,py+5);
}
}
<html>
<head>
<title>111</title>
</head>
<body>
<applet code="mouse.class"width=300 height=350></applet>
</body>
</html>
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