Java Tictaoe游戏中的ArrayIndexOutOfBounds异常

我犯了一个错误，我真的不明白为什么。这是一个小游戏 这是课桌

public class Table {

private int columns;
private int rows;
private int wincells;
private PieceType[][] table;

public Table() {
}

public Table(int rows, int columns, int wins) {
    this.columns = columns;
    this.rows = rows;
    this.wincells = wins;
    table = new PieceType[rows][columns];
    fillEmpty();
}
public void fillEmpty() {
    for (int i = 0; i < rows; ++i) {
        for (int j = 0; j < columns; ++j) {
            table[i][j] = PieceType.None;
        }
    }
}

public PieceType getElement(int i, int j) {
    return table[i][j];
}

这是x和Y得到值的地方

   for (int i = 0; i < rows; ++i)
        for (int j = 0; j < cols; ++j) {

            gridData.heightHint = 45;
            gridData.widthHint = 45;

            Button button = new Button(buttonpanel, SWT.PUSH);
            button.setLayoutData(gridData);
            button.setData(new Cell(i,j));
            buttonTable[i][j] = button;
            buttonTable[i][j]
                    .addSelectionListener(new buttSelectionListener());

SelectionEvent e的e.x和e.y是鼠标点击的坐标，而不是网格。您应该从按钮数据中获取单元格，然后将其用于游戏移动。 您可以这样修复widgetSelected方法：

Cell c = (Cell) button.getData();
// Then use i and j of the cell for the game move
game.move(c.i, c.j); // or something similar

---

您可能希望从按钮数据获取单元格，并使用i，j坐标调用getElement

注意：关于Table类的一些注释。如果您已经知道表的初始大小，那么默认构造函数就没有意义。如果是这样的话，将列、行和wincells设置为final，这样它们就不能在游戏中被修改。此外，请检查getElement中提供的坐标是否在数组边界内：

public PieceType getElement(int i, int j) {
    if ((i < 0) || (i >= rows) ||
        (j < 0) || (j >= columns)) {
        return null;
    }

    return table[i][j];
}

---

您在哪里/如何调用getElement方法？请发布stacktrace。它准确地显示了问题发生在哪一行。此外，使用默认构造函数可能会导致问题，因为字段不会初始化。提供默认值或不提供默认构造函数都是一个好主意。我尝试了你的方法，可能有什么效果，因为现在我得到了相同的异常，但在相同的方法中得到了数字2。

if(table.getElement(x, y) != PieceType.None) return MoveResult.InvalidMove;

Cell c = (Cell) button.getData();
// Then use i and j of the cell for the game move
game.move(c.i, c.j); // or something similar

public PieceType getElement(int i, int j) {
    if ((i < 0) || (i >= rows) ||
        (j < 0) || (j >= columns)) {
        return null;
    }

    return table[i][j];
}

import java.util.Scanner;

public class TicTacToe_Game {

    public static void main(String[] args) {
        Scanner Myinput = new Scanner(System.in);
        char[][] board = new char[3][3];

        boolean Gameover;
        Gameover = CalculateWinner(board);
        while(!Gameover){

        displayBoard(board);
        System.out.println("Enter row and column for player X");
        int rowX, columnX;
        rowX=Myinput.nextInt();
        columnX= Myinput.nextInt();
        boolean successX = setMove(rowX , columnX ,board,'X');
        while(!successX){
            System.out.println("INVALID MOVE FOR PLAYER X");
            System.out.println("Re-Enter row and column for player X");
            rowX=Myinput.nextInt();
            columnX= Myinput.nextInt();
            successX = setMove(rowX , columnX ,board,'X');
        }
        Gameover= CalculateWinner(board);

        displayBoard(board);
        System.out.println();
        System.out.println("Enter row and column for player O");
        int rowO, columnO;
        rowO=Myinput.nextInt();
        columnO= Myinput.nextInt();
        boolean successO= setMove(rowO , columnO ,board,'O');
        while(!successO){
            System.out.println("invalid Move");
            System.out.println("Re-Enter row and column for player O");
            rowO=Myinput.nextInt();
            columnO= Myinput.nextInt();
            successO = setMove(rowO , columnO ,board,'0');
        }
        Gameover=CalculateWinner(board);
        }
    }
    public static boolean setMove(int row, int column,char[][] board,char player){
        if(board[row][column]== 'X' || board[row][column]== 'O' ){
            return false;
            }
            else if (player =='X'){
            board[row][column] = 'X';
            return true;
            }
            else{
            board[row][column] = 'O';
    return true;
            }
    }
    public static void displayBoard(char[][]board){
        System.out.println("-------------------");
        System.out.println("|"+board[0][0]+"|"+board[0][1]+"|"+board[0][2]+"|");
        System.out.println("-------------------");
        System.out.println("|"+board[1][0]+"|"+board[1][1]+"|"+board[1][2]+"|");
        System.out.println("-------------------");
        System.out.println("|"+board[2][0]+"|"+board[2][1]+"|"+board[2][2]+"|");
        System.out.println("-------------------");
    }
    public static boolean CalculateWinner(char[][] board){
        boolean filled =false;
        for(int column=0; column<=2; column++){
            for(int row =0; row<=2; row++){
                if (board[column][row]!='X'&& board[column][row]!='O'){
                    filled = false;

                }
                else
                { filled = true;
            }
        }
    }
        if (filled){
            return true;
        }else {
            return false;
        }
}
}