简单实现java数独游戏

import java.util.Random; 
 
public class SudokuPuzzleGenerator { 
 private Random random = new Random(); 
  
 private static final int MAX_CALL_RANDOM_ARRAY_TIMES = 220; 
  
 private int currentTimes = 0; 
 
 public int[][] generatePuzzleMatrix() { 
 
  int[][] randomMatrix = new int[9][9]; 
 
  for (int row = 0; row <9; row++) { 
   if (row == 0) { 
    currentTimes = 0; 
    randomMatrix[row] = buildRandomArray(); 
 
   } else { 
    int[] tempRandomArray = buildRandomArray(); 
 
    for (int col = 0; col <9; col++) { 
     if (currentTimes 

import javax.swing.*;  
import java.awt.*; 
import java.awt.event.*; 
import java.util.Random; 
 
public class ShuD extends JFrame{ 
 private static final long serialVersiOnUID= 5952689219411916553L; //序列化字段 
 private static JTextField a[][] = new JTextField[9][9];  //存储文本框中的数字 
 static int ans[][] = new int[9][9];  //存储输入后的两位数组 
 SudokuPuzzleGenerator example = new SudokuPuzzleGenerator(); 
 public int right[][] = example.generatePuzzleMatrix(); 
 public int rightans[][]; 
 private int[][] Wk(int a[][]){    //挖空 
  Random r = new Random(); 
  int a1, a2; 
  a1 = r.nextInt(9); 
  a2 = r.nextInt(9); 
  for(int i = 0; i <100; i++) 
  { 
   a[a1][a2] = 0; 
   a1 = r.nextInt(9); 
   a2 = r.nextInt(9); 
  } 
  return a; 
 } 
 public ShuD(){ 
  Container c = getContentPane(); 
  c.setLayout(new BorderLayout(2, 1));  //边框布局 
  JMenuItem jmiOk = new JMenuItem("提交");  //定义菜单 
  JMenuItem jmiExplain = new JMenuItem("详情"); 
  JMenuItem jmiMessage = new JMenuItem("信息"); 
   
  JPanel panel = new JPanel();  //定义一个容器 
  panel.add(jmiOk);     //将菜单在容器内显示 
  panel.add(jmiExplain); 
  panel.add(jmiMessage); 
  JPanel p1 = new JPanel(new GridLayout(9, 9, 5, 5));  //定义9行9列的网格布局 
  add(panel,BorderLayout.NORTH);   //将菜单放置在北面 
  add(p1,BorderLayout.CENTER);   //将数字放置在正中间 
  rightans = Wk(right); 
  for(int k = 0;k<9; k ++) 
  { 
   for(int n=0;n<9;n++) 
   { 
    if(rightans[k][n] != 0) 
    { 
     a[k][n] = new JTextField("" + rightans[k][n]); 
     a[k][n].setHorizontalAlignment(JTextField.CENTER);//将数字水平居中 
     a[k][n].setEditable(false);   //只可显示不可修改 
     p1.add(a[k][n]);     //添加文本框 
    } 
    else 
    { 
     a[k][n] = new JTextField();  
     a[k][n].setHorizontalAlignment(JTextField.CENTER); 
     p1.add(a[k][n]); 
    } 
   } 
  } 
  add(p1);   //将数字面板显示在容器里 
  jmiOk.addActionListener(new ActionListener(){//匿名创建事件监听器 
   public void actionPerformed(ActionEvent e) 
   { 
    if(gettext() == 1) 
    { 
     if(judge() == true) 
     { 
      JOptionPane.showMessageDialog(null, "Your answer is right!","Result",JOptionPane.INFORMATION_MESSAGE); 
     } 
     else 
     { 
      JOptionPane.showMessageDialog(null, "Your answer is wrong!","Result",JOptionPane.INFORMATION_MESSAGE); 
     } 
    } 
   } 
  }); 
  explainListenerClass listener2 = new explainListenerClass(); 
  jmiExplain.addActionListener(listener2); 
  messageListenerClass listener3 = new messageListenerClass(); 
  jmiMessage.addActionListener(listener3); 
 } 
  
 static int gettext()   //获取文本框的文字 
 { 
  int i,j; 
  for(i = 0; i <9; i++) 
  { 
   for(j = 0; j <9 ; j ++) 
   { 
    ans[i][j] = 0; 
   } 
  } 
  for(int k = 0;k <9; k++) 
  { 
   for(int n = 0;n <9; n++) 
   { 
    try   //异常处理 
    { 
     ans[k][n] = Integer.parseInt(a[k][n].getText());  
     //将答案类型转换之后传给ans 
    } 
    catch(NumberFormatException nfe) 
    { 
     JOptionPane.showMessageDialog(null,"数据中包括非数字，请重新输入"); 
     return 0; 
    } 
   } 
  } 
  return 1; 
 } 
 public static boolean judge()   //判断输入的答案是否正确 
 { 
  int i,j,k; 
  int [][]answer = ans;    
   
  for(i = 0; i <9; i ++) 
  { 
   if(judge9(answer[i]) == false)  //判断每列是否有重复数字 
    return false; 
  } 
  for(j = 0; j <9; j ++)     //判断每行是否有重复数字 
  { 
    
   int[] newAnswerColumn = new int[9]; 
   for(i = 0; i <9; i ++) 
   { 
    newAnswerColumn[i] = answer[i][j]; 
   } 
   if(judge9(newAnswerColumn) == false) 
    return false; 
  } 
  for(i = 0; i <3; i ++)   //判断每个小九宫格内是否有重复数字 
  { 
   for(j = 0; j <3; j ++) 
   { 
    k = 0; 
    int[] newAnswer = new int[9]; 
    for(int m = i * 3; m