抽奖系统

package cjst;
import java.applet.Applet;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Random;
public class prize{
ArrayList list;
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("欢迎进入抽奖系统！");
prize p=new prize();
p.add();
p.c1();
}
public ArrayList add() {
// TODO Auto-generated method stub
if(list==null){
list=new ArrayList();
for(int i=1;i<=200;i++){
list.add(i);
}
}
Collections.shuffle(list);
return (list);
}
public void c1(){
Random r=new Random();
int a=r.nextInt(200);
System.out.println("一等奖:"+list.get(a)+"号。");
list.remove(a);
int b=(int) Math.random();
for(int j=1;j<=10;j++);
a=r.nextInt(200);
System.out.println("二等奖："+list.get(a)+"号和"+list.get(b)+"号。");
list.remove(a);
list.remove(b);
b=r.nextInt(200);
a=r.nextInt(200);
int[] m={r.nextInt(200),a,b};
list=new ArrayList();
System.out.println("三等奖："+list+"号.");
}
}