The examples in this article share the specific code of the Java Sudoku game for your reference. The specific content is as follows
The sudoku game I wrote myself has 9 levels in total, and the code is as follows:
1. DoShudu class is used to generate sudoku arrays
import java.util.Random; public class DoShudu { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub int[][] cells=newshudu(); //cells=changeShu(cells,9); for(int k=0;k<9;k++){ for(int i=0;i<9;i++){ System.out.print(cells[k][i]); } System.out.println(); } } public static int[][] newshudu(){ int[][] cells=new int[][]{ {1,2,3,4,5,6,7,8,9}, {4,5,6,7,8,9,1,2,3}, {7,8,9,1,2,3,4,5,6}, {2,3,1,5,6,4,8,9,7}, {5,6,4,8,9,7,2,3,1}, {8,9,7,2,3,1,5,6,4}, {3,1,2,6,4,5,9,7,8}, {6,4,5,9,7,8,3,1,2}, {9,7,8,3,1,2,6,4,5} }; int countH=new Random().nextInt(10); for(int k=0;k<countH;k++){ cells=lineTolie(cells); } int count=0; for(int k=0;k<12;k++){ count=new Random().nextInt(9); cells=changeLine(cells,count); } int countH2=new Random().nextInt(10); for(int k=0;k<countH2;k++){ cells=lineTolie(cells); } return cells; } public static int [][] changeLine(int[][] cells,int m){//Line and row exchange int n=m; int [] temp=new int[9]; n=((m+3)>=9)?(m+3-9):m+3; for(int j=0;j<9;j++){ temp[j]=cells[m][j]; cells[m][j]=cells[n][j]; cells[n][j]=temp[j]; } return cells; } public static int[][] lineTolie(int[][] cells){//Line and column exchange int temp=0; for(int j=0;j<9;j++){ for(int k=j+1;k<9;k++){ temp=cells[k][j]; cells[k][j]=cells[j][k]; cells[j][k]=temp; } } return cells; } } 2. Interface operation class
import java.awt.Button; import java.awt.Color; import java.awt.FlowLayout; import java.awt.Font; import java.awt.GridLayout; import java.awt.Point; import java.awt.TextField; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.event.MouseMotionAdapter; import java.awt.event.TextEvent; import java.awt.event.TextListener; import java.util.Random; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import com.sun.awt.AWTUtilities; public class Sudoku extends JFrame { final private TextField[][] txtGame; static int num=20;//Number of blank spaces static int guan=5;//Number of levels static int add=5;//Number of blank spaces added after quitting public static void main(String[] args) { Sudoku shudu = new Sudoku(); } public Sudoku() {// Initial layout of JFrame and listening settings txtGame = new TextField[9][9];// Create 81 TextField objects DoShudu shudu = new DoShudu(); int[][] cells = shudu.getShudu();// Get Sudoku array final JPanel jpl = new JPanel();// Create JPanel object final int spaceNum = num;// spaceNum means the number of blank TextFields that need to be set jpl.setLayout(new GridLayout(9, 9));// JPanel layout final int[][] cellAn = new int[9][9];// Answer to Sudoku array System.arraycopy(cells, 0, cellAn, 0, cells.length);// The answer is from the created Sudoku array Copy for (int i = 0; i < 9; i++) {// Print the answer from the Console for (int j = 0; j < 9; j++) { System.out.print(cellAn[i][j]); } System.out.println(); } // End of printing this.setDefaultCloseOperation(this.EXIT_ON_CLOSE); this.setSize(600, 600); this.setResizable(false); this.setTitle("Dark Horse-Li Germany-Suku Game 9 Level"); for (int i = 0; i < 9; i++) { for (int j = 0; j < 9; j++) { txtGame[i][j] = new TextField(); // Set TextField background color if ((i < 3 && j < 3) || (i < 6 && i >= 3 && j >= 3 && j < 6) || (i < 9 && i >= 6 && j >= 6 && j < 9)) { txtGame[i][j].setBackground(Color.ORANGE); } if ((i < 6 && i >= 3 && j < 3) || (i < 3 && j >= 6 && j < 9) || (i < 9 && i >= 6 && j >= 3 && j < 6)) { txtGame[i][j].setBackground(Color.GREEN); } if ((i < 9 && i >= 6 && j < 6)) { txtGame[i][j].setBackground(Color.GREEN); } if ((i < 9 && i >= 6 && j < 6)) { txtGame[i][j].setBackground(Color.GREEN); } if ((i < 9 && i >= 6 && j < 3) || (i < 3 && j >= 3 && j < 6) || (i < 6 && i >= 3 && j < 9 && j >= 6)) { txtGame[i][j].setBackground(Color.PINK); } txtGame[i][j].setFont(new Font("Dialog", Font.CENTER_BASELINE, 60));// Set the font size txtGame[i][j].setText(Integer.toString(cells[i][j])); txtGame[i][j].setEnabled(false); txtGame[i][j].setVisible(true); jpl.add(txtGame[i][j]); jpl.setVisible(true); } } final int[][] tempArray = new int[spaceNum][2]; final JFrame jfm = new JFrame("Select number"); // Cancel JFrame title jfm.setUndecorated(true); // Add JFrame drag function final Point origin = new Point(); jfm.addMouseListener(new MouseAdapter() { public void mousePressed(MouseEvent e) { origin.x = e.getX(); origin.y = e.getY(); } }); jfm.addMouseMotionListener(new MouseMotionAdapter() { public void mouseDragged(MouseEvent e) { Point p = jfm.getLocation(); jfm.setLocation(px + e.getX() - origin.x, py + e.getY() - origin.y); } }); // Set JFrame to translucent AWTUtilities.setWindowOpacity(jfm, 0.7f); final JPanel jpnl = new JPanel(new GridLayout(3, 3)); jfm.setLayout(null); jfm.setSize(190, 200); jfm.setResizable(false); jpnl.setBounds(0, 0, 190, 120); jfm.setResizable(false); for (int i = 0; i < spaceNum; i++) {// Set TextField to be empty randomly based on the number of blank TextFields that need to be final int ranD1 = new Random().nextInt(9); final int ranD2 = new Random().nextInt(9); tempArray[i][0] = ranD1; tempArray[i][1] = ranD2; txtGame[ranD1][ranD2].setText(""); if ((ranD1 < 3 && ranD2 < 3) || (ranD1 < 6 && ranD1 >= 3 && ranD2 >= 3 && ranD2 < 6) || (ranD1 < 9 && i >= 6 && ranD2 >= 6 && ranD2 < 9)) { txtGame[ranD1][ranD2].setBackground(Color.ORANGE); } if ((ranD1 < 6 && ranD1 >= 3 && ranD2 < 3) || (ranD1 < 3 && ranD2 >= 6 && ranD2 < 9) || (ranD1 < 9 && ranD1 >= 6 && ranD2 >= 3 && ranD2 < 6)) { txtGame[ranD1][ranD2].setBackground(Color.GREEN); } if ((ranD1 < 9 && ranD1 >= 6 && ranD2 < 3) || (ranD1 < 9 && ranD1 >= 6 && ranD2 < 3) || (ranD1 < 1 < 10 && ranD1 >= 6 && ranD2 < 3) || (ranD1 < 100 3 && ranD2 >= 3 && ranD2 < 6) || (ranD1 < 6 && ranD1 >= 3 && ranD2 < 9 && ranD2 >= 6)) { txtGame[ranD1][ranD2].setBackground(Color.PINK); } txtGame[ranD1][ranD2].addMouseListener(new MouseAdapter() { public void mouseClicked(MouseEvent mouseevent) { jfm.getContentPane().removeAll();// Removed all components jpnl.removeAll(); for (int f = 0; f < 9; f++) { final Button btn = new Button((f + 1) + ""); btn.setForeground(Color.RED); btn.setBackground(Color.WHITE); btn .setFont(new Font("Dialog", Font.CENTER_BASELINE, 30)); btn.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { // TODO Auto-generated method stub txtGame[ranD1][ranD2].setText(btn.getLabel() + txtGame[ranD1][ranD2].getText()); } }); jpnl.add(btn); } Button btnDel = new Button("Clear"); btnDel.setForeground(Color.WHITE); btnDel.setBackground(Color.RED); btnDel .setFont(new Font("Dialog", Font.CENTER_BASELINE, 30)); btnDel.setBounds(0, 120, 190, 50); btnDel.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { // TODO Auto-generated method stub txtGame[ranD1][ranD2].setText(""); } }); jfm.add(jpnl); jfm.add(btnDel); jfm.setVisible(true); } }); txtGame[ranD1][ranD2].addTextListener(new TextListener() {// Add a listener to the blank TextField, compare the answers after the value changes, print "good" in the Console if all answers are correct @Override public void textValueChanged(TextEvent e) { TextField tmp = (TextField) e.getSource(); int count = 0; for (int u = 0; u < spaceNum; u++) { if ((txtGame[tempArray[u][0]][tempArray[u][1]] .getText()) .equals(Integer .toString(cellAn[tempArray[u][0]][tempArray[u][1]]))) { count++; } } if (count == spaceNum) { jpl.removeAll(); FlowLayout blt = new FlowLayout(); jpl.setLayout(blt); if(num<=3){ jpl.add(new JLabel("Congratulations on passing the level")); Button btn = new Button("Enter the next level"); btn.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { // TODO Auto-generated method stub Sudoku.this.dispose(); jfm.dispose(); num=num+add; new Sudoku(); } }); jpl.add(btn); } else{ jpl.add(new JLabel("Congratulations on completing all the levels!")); } jpl.updateUI(); System.out.println("good"); } } }); txtGame[ranD1][ranD2].setEnabled(true); } this.add(jpl); this.setVisible(true); } }The above is all the content of this article. 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