数独 JAVA实现

数独游戏的规则从很久之前就知道，但是一直都没怎么玩过，然后到了大学，大一下学期自己学dfs的时候，刚刚好碰到了一个数独的题目，做出来后，感觉还是挺有成就感的

然后大二学了JAVA，看了下那个一些有关于界面的一些函数的使用这些，就写出来一个比较粗糙的数独游戏，这个游戏我打算一直维护更新，直到我大学毕业，看看最后可以变成什么样子

public class Main {
    public static void main(String[] args) {
        gra f = new gra("数独",400,400,400,400);
    }
}

package sodu;
import java.io.*;
import java.util.*;
import java.math.*;
import java.security.PrivateKey;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.security.auth.login.CredentialExpiredException;
import javax.security.cert.CertificateNotYetValidException;
import javax.swing.*;
import javax.swing.text.AbstractDocument.LeafElement;

import org.omg.PortableServer.ServantLocator; 
public class gra extends JFrame {
    Scanner cin = new Scanner(System.in);
    Random ran = new Random();
    JMenuBar mbar;
    JMenuItem ito,itt,its;
    JMenu menu;
    JTextField [][]tx = new JTextField [9][9];
    GridLayout gri;
    JPanel chess= new JPanel();;
    int[][] ans = new int[9][9];
    int []a = new  int [11];
    int [][]num = new int[9][9];
    int [][]fat = {
                {8,7,1,9,3,2,6,4,5},
                {4,9,5,8,6,1,2,3,7},
                {6,3,2,7,5,4,8,1,9},
                {5,2,8,4,7,3,1,9,6},
                {9,1,3,6,2,5,7,8,4},
                {7,6,4,1,9,8,3,5,2},
                {2,8,7,3,4,9,5,6,1},
                {1,4,6,5,8,7,9,2,3},
                {3,5,9,2,1,6,4,7,8},
    };
    gra(){
    }
    gra(String name,int a,int b,int c,int d){
        ints(name);
        setLocation(a,b);
        setSize(c,d);
        setVisible(true);
        set();
        setDefaultCloseOperation(EXIT_ON_CLOSE);
    }
    void Show(){        
        chess.updateUI();
        chess.removeAll();
        gri = new GridLayout(9,9);
        for(int i = 0 ; i < 9 ; i++)
            for(int j = 0 ; j <9 ; j++){
                String s = String.valueOf(num[i][j]);
                int n = ran.nextInt(13);
                if(n%4==0){
                    ans [i][j] = num [i][j];
                    JLabel text = new JLabel(s,JLabel.CENTER);
                    text.setForeground(Color.white);
                    chess.add(text);
                }else{
                    tx[i][j] = new JTextField();
                    tx[i][j].setHorizontalAlignment(SwingConstants.CENTER);
                    chess.add(tx[i][j]);
                }
            }
        chess.setLayout(gri);
        chess.setBackground(Color.DARK_GRAY);
        add(chess);    
    }
    void set(){
        ito.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e) {    
                setVisible(false);
                calc();
                Show();
                setVisible(true);
            }
        });
        itt.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e) {
                        judge();
            }
        });
        its.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                setVisible(false);
            }
        });
        
    }
    void ints(String s){
        setTitle(s);
        mbar = new JMenuBar();
        menu = new JMenu("菜单");
        ito = new JMenuItem("开始");
        itt = new JMenuItem("提交");
        its = new JMenuItem("退出");
        menu.add(ito);
        menu.add(itt);
        menu.add(its);
        mbar.add(menu);
        setJMenuBar(mbar);
    }
    void calc(){
        boolean []b = new boolean[11];
        int i = 0;
        b[0] = true;
        while(i<9){
            int n = ran.nextInt(10);
            if(!b[n]) {
                a[i++] = n;
                b[ n ] = true;
            }
        }
        for(int k = 0 ; k < 9 ; k++)
            for(int m = 0 ; m < 9 ; m++)
                for(int n = 0 ; n < 9 ; n++){
                    if(fat[m][n]==a[ k ] && k != 8){
                        num[m][n] = a[k+1];
                    }else if(fat[m][n]==a[k]&&k == 8){
                        num[m][n] = a[0];
                    }
                }
    void judge(){
        int falg = 0;
        for(int i = 0 ; i < 9 ; i++)
            for(int j = 0 ; j < 9 ; j++){
                if(ans[i][j] == 0) {
                    int tmp = Integer.valueOf(tx[i][j].getText());
                    ans[i][j] = tmp;
                }
            }
        for(int i = 0 ; i < 9 ; i++){
            boolean[]h = new boolean[10];
            boolean[]s = new boolean[10];
            for(int j = 0 ; j < 9 ; j++){
                if(!h[ans[i][j]]&&!s[ans[i][j]]){
                    h[ans[i][j]] = true;
                    s[ans[i][j]] = true;
                }else {
                    falg = 1;
                    break;
                }
            }
            if(falg == 1) break;
        }
        if(falg == 1) {
            JFrame a = new JFrame("错误");
            JTextField text = new JTextField("你的答案错了");
            text.setHorizontalAlignment(SwingConstants.CENTER);
            a.add(text);
            a.setSize(200,200);
            a.setLocation(500,500);
            a.setVisible(true);
        }else{
            JFrame a = new JFrame("成功");
            JTextField text = new JTextField("你的答案正确");
            text.setHorizontalAlignment(SwingConstants.CENTER);
            text.setForeground(Color.red);
            a.add(text);
            a.setSize(200,200);
            a.setLocation(500,500);
            a.setVisible(true);
        }
    }
}