java²ÂÃÕÓÎÏ·

import java.io.*;
public class Luckyman {
 public static void main(String []args){
  int coins,i,j,bets,rand,rewards,unit;
  char choiceID,luckyID;
  boolean flag=true;
  int in;
  coins=10;
  bets=0;
  unit=1;
  choiceID='N';
  luckyID='N';
  BufferedReader br,bw;
  intro();
  while(flag==true){
   System.out.println("Äúµ±Ç°µÄ½ð±Ò×ܼƣº£¤"+coins);
   if(coins<=0){
    System.out.println("ÄúµÄ½ð±ÒÒѾ­ÓÃÍê,ÓÎÏ·½áÊø¡£");
    flag=false;
    return;
   }
   System.out.println("»¶Ó­½øÈëÐÒÔËÆ»¹û»ú£¬ÐµÄÒ»ÂÖÓÎÏ·ÂíÉÏ¿ªÊ¼£¡");
   System.out.println("²ÂÖеÄÎïÆ·¼°¶ÔÓ¦µÄ½±ÀøÈçÏ£º");
   System.out.println("A.Æ»¹û---2 ½ð±Ò");
   System.out.println("B.ľ¹Ï--5 ½ð±Ò");
   System.out.println("C.Î÷¹Ï--10 ½ð±Ò");     
   System.out.println("D Ï㽶--20 ½ð±Ò");
   System.out.println("E ³È×Ó--50 ½ð±Ò");
   System.out.println("F.ÆÏÌÑ--100 ½ð±Ò");
   System.out.println("ÓÎÏ·½áÊø£¬Çë°´Q!");
   try{
    System.out.print("ÇëÊäÈëÄúÑ¡ÖеÄË®¹û£¨ÊäÈë´óд×ÖĸA~F):");
    br=new BufferedReader(new InputStreamReader(System.in));
    choiceID=(char)br.read();
    if(choiceID=='Q'){
     flag=false;
     return;
    }
    do{
     System.out.print("ÇëÊäÈëÄúҪѺµÄ½ð±ÒÊý");
     System.out.print(coins+"½ð±Ò");
     bw=new BufferedReader(new InputStreamReader(System.in));
     bets=Integer.parseIn