21点

这两周老师布置了一个作业，用JSP编写一个21点的小游戏。由于本人刚接触JSP还没多久，所以只能简单地完成。现将代码发布如下，希望可以得到各位的指点，以使游戏更加完善。

import java.io.*;
import java.util.*;
public class ErYiDian {

 /**
  * @param args
  */
 public static void main(String args[]) throws IOException {
  // TODO Auto-generated method stub
  for (;;) {
   BufferedReader br = new BufferedReader(new InputStreamReader(
     System.in));
   System.out.println("请按回车键进行游戏!");
   
   
   int N1 = 0;
   int N2 = 0;
   Random ra = new Random();
   int xj = ra.nextInt(2) + 17;

   String Temp1 = "";
   String Temp2 = "";
   int Sum1 = 0;
   int Sum2 = 0;

   while (true) {
    br.readLine();
    
    ArrayList CartNumber=new ArrayList();
    
    for(int N=1;N<14;N++){
     String str1="黑桃"+N;
     CartNumber.add(str1);
     String str2="红桃"+N;
     CartNumber.add(str2);
     String str3="梅花"+N;
     CartNumber.add(str3);
     String str4="方块"+N;
     CartNumber.add(str4);
    
    }
    //System.out.println(CartNumber+" ; ");

    
    ArrayList Player = new ArrayList();
    ArrayList Computer = new ArrayList();

    
    

    for (int i = 0; i < Player.size(); i++) {
     N1++;
     
     
     int PlayerNumber = ra.nextInt(CartNumber.size()) ;
     //Player.add(new Integer(PlayerNumber);
     Player.size();
     
     Temp1=CartNumber.get(i)+"";
     Player.add(Temp1);
     //CartNumber.remove(i);
     //String Temp3=CartNumber.get(index)
     //Temp1 += Player.get(i) + ";";
     Sum1 += PlayerNumber;
     System.out.println("这是你的第" + N1 + "张牌");
     System.out.println("你目前的牌为:" +Temp1);
     //System.out.println("你的总点数为:" + Sum1);
    }
    if (Sum2 > xj)
     continue;
    {

     for (int k = 0; k < Computer.size(); k++) {
      N2++;
      
      int  ComputerNumber = ra.nextInt(CartNumber.size());
      Computer.add(ComputerNumber);
      Computer.size();
      
      Temp2 += Computer.get(k) + ";";
      Sum2 += ComputerNumber;
      System.out.println("这是电脑的第" + N2 + "张牌");
     }
    }
    String str = br.readLine();
    if (str.equals("end")) {
     if (Sum1 > 21 && Sum2 > 21) {
      System.out.println("本局无效");
      System.out.println("你的总点数为:" + Sum1);
      System.out.println("电脑的总点数为:" + Sum2);
     } else if (Sum1 > 21 && Sum2 < 21) {
      System.out.println("你输了!");
      System.out.println("你的总点数为:" + Sum1);
      System.out.println("电脑的总点数为:" + Sum2);
      System.out.println("你的点数为分别为:" + Temp1);
      System.out.println("电脑的点数分别为:" + Temp2);
     } else if (Sum1 > Sum2 && Sum1 < 21) {
      System.out.println("你赢了!");
      System.out.println("你的总点数为:" + Sum1);
      System.out.println("电脑的总点数为:" + Sum2);
      System.out.println("你的点数为分别为:" + Temp1);
      System.out.println("电脑的点数分别为:" + Temp2);
     } else if (Sum1 < Sum2 && Sum2 < 21) {
      System.out.println("你输了!");
      System.out.println("你的总点数为:" + Sum1);
      System.out.println("电脑的总点数为:" + Sum2);
      System.out.println("你的点数为分别为:" + Temp1);
      System.out.println("电脑的点数分别为:" + Temp2);
     } else {
      System.out.println("打平!");
      System.out.println("你的总点数为:" + Sum1);
      System.out.println("电脑的总点数为:" + Sum2);
      System.out.println("你的点数为分别为:" + Temp1);
      System.out.println("电脑的点数分别为:" + Temp2);

     }

     System.out.println("本局游戏结束!请按提示进行下一局游戏");
     break;
    } else {

     continue;
    }
   }
  }

 }

}