Question

在这段代码中，我想创建一个3x3棋盘游戏，但屏幕上没有任何内容..（代码编译正确，但不显示输出）我认为问题出在main方法......无法弄明白......请帮助！

package games;

import games.board.*;

public class BoardGameTester {

/**
 * @param args
 */
private static Board gb;
public static void main(String[] args) {
    // TODO Auto-generated method stub
    gb = new Board(3, 3);
}

 }

这是一个board.java：

package games.board;
   public class Board  {
private Cell[][] cells;
public Board(int rows, int columns) {
cells = new Cell[rows][columns];
for( int r = 0; r < cells[0].length; r++ ) {
for (int c = 0; c < cells[1].length; c++) {
cells[r][c] = new Cell(r,c);
}
}
}
public void setCell(Mark mark, int row, int column) throws
IllegalArgumentException {
if (cells[row][column].getContent() == Mark.EMPTY)
cells[row][column].setContent(mark);
else throw new IllegalArgumentException("Player already there!");
}
public Cell getCell(int row, int column) {
return cells[row][column];
}
public String toString() {
StringBuilder str = new StringBuilder();
for( int r = 0; r < cells.length; r++ ) {
str.append("|"); 


for (int c = 0; c < cells[r].length; c++) {
switch(cells[r][c].getContent()) {
case NOUGHT:
    str.append("O");
    break;
    case CROSS:
    str.append("X");
    break;
    case YELLOW:
    str.append("Y");
    break;
    case RED:
    str.append("R");
    break;
    case BLUE:
    str.append("B");
    break;
    case GREEN:
    str.append("G");
    break;
    case MAGENTA:
    str.append("M");
    break;
    case ORANGE:
    str.append("M");
    break;
    default: //Empty
    str.append("");
    }
    str.append("|");
    }
    str.append("\n");
    }
    return str.toString();

}
}

这是一个cell.java

package games.board;

public class Cell {
private Mark content;
private int row, column;
public Cell(int row, int column) {
this.row = row;
this.column = column;
content = Mark.EMPTY;
}
public Mark getContent() { return content; }
public void setContent(Mark content) { this.content = content; }
public int getRow() { return row; }
public int getColumn() { return column; }
}

这是mark.java

package games.board;

public enum Mark {

EMPTY, NOUGHT, CROSS, YELLOW, RED, BLUE, GREEN, MAGENTA, ORANGE
}

这是outcome.java

package games.board;

public enum Outcome {
PLAYER1_WIN, PLAYER2_WIN, CONTINUE, TIE
}

这是player.java

package games.board;

public enum Player {
FIRST,SECOND
}

Answer 1

试试这个：

public static void main(String[] args) {
    // TODO Auto-generated method stub
    gb = new Board(3, 3);
    System.out.println(gb.toString());
}

Answer 2

您没有生成任何输出打印板到控制台尝试：

public static void main(String[] args) {
    // TODO Auto-generated method stub
    gb = new Board(3, 3);
    System.out.println(gb);
}

它将调用gb.toString()方法

ps：如果您使用str.append("\n")代替str.append("|")

，可能会更容易阅读

TicTacToe游戏，没有输出

2 个答案: