自己用java写的猜数字游戏！

在控制台进行操作，还没实现界面化

package guessGame;

import java.util.*;

import java.io.*;

public class GuessDigit {

private ArrayList<Integer> digitArray ;

private boolean flag = true;

private static final int SIZE = 4;

private static int count = 7;

public GuessDigit(){

this(GuessDigit.count);

}

public GuessDigit(int count){

GuessDigit.count = count;

digitArray = new ArrayList<Integer>(SIZE);

Random r = new Random();

int n = 0;

while(n < SIZE){

int i = r.nextInt(10);

if(!digitArray.contains(i)){

digitArray.add(n, i);

n ++;

}

}

System.out.println("请输入4个不同的数字，你一共有"+count+"次机会:");

}

public String toString(){

String s = "";

for(int i = 0; i < digitArray.size(); i ++){

s += digitArray.get(i);

}

return s;

}

private void campare(String s){

String array = toString();

int A = 0, B = 0;

char c1, c2;

for(int i = 0 ;i < SIZE; i ++){

c1 = array.charAt(i);

c2 = s.charAt(i);

if(c1 == c2){

A ++;

}else if(array.indexOf(c2) != -1)

B ++;

}

System.out.println(s + " " + A + "A" + B + "B");

if(A == SIZE){

System.out.println("恭喜你猜对了！数字是" + this);

flag = false;

}

if(--count == 0 && A < SIZE ){

System.out.println("已达到规定次数，数字是："+this);

flag = false;

}

}

public void getConsole() throws IOException{

BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));

String s ;

boolean repeat;

int i;

while(flag){

s = stdin.readLine();

repeat = false;

i = 0;

if(s.matches("//d{4}")){

while(!repeat && i < SIZE-1){

if(s.lastIndexOf(s.charAt(i)) != i){

System.out.println("请输入4不同的数字:");

repeat = true;

}

i ++;

}

if(!repeat)

campare(s);

}else

System.out.println("请检查输入值的格式:");

}

}

public static void main(String[] args) throws IOException {

GuessDigit g = new GuessDigit(); ;

//System.out.println(g);

g.getConsole();

}

}