public class wuhuan extends Applet{
 private Color clr[]={Color.blue,Color.black,Color.red,Color.yellow,
 Color.green};   //clr[]存储颜色
 private int[] x={100,136,172,118,154}; //x[]存储圆心的x坐标
 private int[] y={60,60,60,91,91}; //y[]存储圆心的y坐标
 private int[][] xy={{100,60},{136,60},{172,60},{118,91},{154,91}};    //存储圆心的坐标
 private int r=20,d=40;
 public void paint(Graphics g)  //画图方法
 { 
 Font font = new Font("楷体",Font.PLAIN,20); //文字字体、大小
 g.setFont(font);
 for(int i=0;i<5;i++)  //循环5次，画5个圆环
 {
 g.setColor(clr[i]);
 g.drawOval(x[i], y[i], d, d); //d代表椭圆外切矩形的长宽，相等代表圆
 }
 g.setColor(Color.blue);  //设置颜色
 g.setFont(font);
 g.drawString("Olympic Logo",120,169);
 }   
}