Java井字棋游戏

试着写了一个井字棋游戏，希望各位能给予一些宝贵的建议。

一、棋盘类

 package 井字棋游戏;

 public class ChessBoard {
     private int number;
     Person player = new Person(); // 创建棋手
     String[][] board = new String[3][3]; // 创建棋盘
     // 设置棋子个数
     public void setNumber(int number) {
         this.number = number;
     }
     // 获得棋子数
     public int getNumber() {
         return this.number;
     }
     // 打印棋盘
     public void printBoard() {
         for (int i = 0; i < 3; i++) {
             System.out.println("-------------");
             for (int j = 0; j < 3; j++) {
                 if (board[i][j] == null)
                     System.out.printf("|   ");
                 else
                     System.out.printf("| %s ", board[i][j]);
             }
             System.out.println("|");
         }
         System.out.println("-------------");
     }
     // 判断位置是否合法
     public boolean judgement(int row, int column) {
         if (board[row][column] == null)  //该位置无棋子
             return true;
         else if (row > 2 || row < 0 || column > 2 || column < 0)  //越界
             return false;
         else   //该位置有棋子
             return false;
     }
     // 放置棋子
     public boolean putChess(String chess) {
         player.chessPlace(chess);
     // 若棋子位置合法，则存入数组
         if (judgement(player.row, player.column)) {
             board[player.row][player.column] = player.chesspiece;
             return true;
         }
         else {
             System.out.println("This site has been taken up, please choose another!");
             return false;
         }
     }
     // 胜利的条件
     public boolean winCondition() {
         int i, j;
         // 判断行
         for (i = 0; i < 3; i++) {
             if (board[i][0] == board[i][1] && board[i][1] == board[i][2] && board[i][0] != null) {
                 System.out.printf("%s player won!\n", board[i][0]);
                 return true;
             }
         }
         //判断列
         for (j = 0; j < 3; j++) {
             if (board[0][j] == board[1][j] && board[1][j] == board[2][j] && board[0][j] != null) {
                 System.out.printf("%s player won!\n", board[0][j]);
                 return true;
             }
         }
         //判断对角线
         if (board[0][0] == board[1][1] && board[1][1] == board[2][2] && board[1][1] != null) {
             System.out.printf("%s player won!\n", board[0][0]);
             return true;
         }
         if (board[0][2] == board[1][1] && board[1][1] == board[2][0] && board[1][1] != null) {
             System.out.printf("%s player won!\n", board[0][2]);
             return true;
         }
         return false;
     }
 }

二、棋手类

 package 井字棋游戏;

 import java.util.Scanner;
 public class Person {
     Scanner s = new Scanner(System.in);
     int row, column;
     String chesspiece; // 棋子类型
     // 选择棋子
     public void chooseChess() {
         String playerone, playertwo;
         do {
             System.out.printf("The first player chooses chess(X or O)：");
             playerone = s.nextLine();
         }while(!(playerone.equals("X") || playerone.equals("x") || playerone.equals("O") || playerone.equals("o")));
         if (playerone.equals("X") || playerone.equals("x")){
             playertwo = "O";
             System.out.printf("The first player is %s, the second player is %s\n", playerone,playertwo);
         }
         else {
             playertwo = "X";
             System.out.printf("The first player is %s, the second player is %s\n", playerone,playertwo);
         }
     }
     // 选择棋子的位置
     public void chessPlace(String chesspiece) {
         do {
             System.out.printf("Enter a row (1, 2 or 3) for player %s:", chesspiece);
             row = s.nextInt() - 1;
             s.nextLine();
         }while(row < 0 || row > 2);
         do {
             System.out.printf("Enter a column (1, 2 or 3) for player %s:", chesspiece);
             column = s.nextInt() - 1;
             s.nextLine();
         }while(column < 0 || column > 2);
         this.chesspiece = chesspiece;
     }
     // 选择是否开始下一局
     public boolean reStart() {
         Scanner s = new Scanner(System.in);
         String flag;
         System.out.printf("Do you want a new game?(Y or N):");
         flag = s.nextLine();
         s.close();
         if (flag.equals("Y") || flag.equals("y"))
             return true;
         else
             return false;
     }
 }

三、测试

package 井字棋游戏;

public class Test {
    public static void main(String[] args) {
        while (true) {
            int i = 0;
            ChessBoard p = new ChessBoard();
            p.player.chooseChess();
            p.printBoard();
            while(!p.winCondition()) {
                if (p.getNumber() % 2 == 0) {
                    boolean judge = p.putChess("X");
                    if (!judge) continue; // 如果位置不合法，则重新下
                }
                else {
                    boolean judge = p.putChess("O");
                    if (!judge) continue; // 如果位置不合法，则重新下
                }
                i++; // 棋子数加一
                p.setNumber(i);  // 设置棋子数
                p.printBoard();
                if(p.getNumber() == 9) {
                    System.out.println("This is a draw!");
                    break;
                }
            }
            if (!p.player.reStart()) {
                System.out.println("Game Over!");
                break;
            }
        }
    }
}

效果如下：