“AWT-EventQueue-0”java.lang.ArrayIndexOutOfBoundsException：2

Question

我正在尝试用 Java 为我的一个课程创建一个井字游戏。该程序从命令行获取一个 int 并创建一个该大小的 JButton 二维数组。它还有一个撤消和一个新的游戏按钮。该程序编译并运行，当我单击新游戏按钮时没有发生异常，但是当我单击其中一个游戏空间时，它会抛出此异常。

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 2
    at GameTester.newMove(GameTester.java:28)
    at TicTacToe$GameListener.actionPerformed(TicTacToe.java:145)
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
    at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
    at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
    at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
    at java.awt.Component.processMouseEvent(Component.java:6505)
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
    at java.awt.Component.processEvent(Component.java:6270)
    at java.awt.Container.processEvent(Container.java:2229)
    at java.awt.Component.dispatchEventImpl(Component.java:4861)
    at java.awt.Container.dispatchEventImpl(Container.java:2287)
    at java.awt.Component.dispatchEvent(Component.java:4687)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
    at java.awt.Container.dispatchEventImpl(Container.java:2273)
    at java.awt.Window.dispatchEventImpl(Window.java:2719)
    at java.awt.Component.dispatchEvent(Component.java:4687)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:723)
    at java.awt.EventQueue.access$200(EventQueue.java:103)
    at java.awt.EventQueue$3.run(EventQueue.java:682)
    at java.awt.EventQueue$3.run(EventQueue.java:680)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
    at java.awt.EventQueue$4.run(EventQueue.java:696)
    at java.awt.EventQueue$4.run(EventQueue.java:694)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:693)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)

我的 newMove 方法只是获取按钮和转弯（1 或 2）的 x 和 y 位置，并将其添加到与 GameTester 类关联的 2D int 数组中。

public void newMove(int x, int y, int turn)
    {
    board[x][y] = turn;
}

这是我的 ActionListener 中循环的一部分，其中包括调用 newMove 方法的位置。

 if (event == buttons[x][y])
{
    theBoard.moveLog(x,y);
    theBoard.newMove(x,y,toggle);
    if (toggle == 1)
    {
        buttons[x][y].setText("X");
        toggle = 2;
    }
    else
    {
        buttons[x][y].setText("O");
        toggle = 1;
    }
            ..... 
    }

非常感谢任何帮助！ :)

Answer 1

根据您提供的问题，buttons 和 board 可能不是相同维度的数组。尝试使用变量来设置两种尺寸，或者使用一个来设置另一个以确保它们的尺寸相同。

选项 1

int X = 3, Y = 3;

JButton[][] buttons = new JButton[X][Y];
char[][] board = new char[X][Y];

选项 2

int X = 3, Y = 3;

JButton[][] buttons = new JButton[X][Y];
char[][] board = new char[buttons.length][buttons[0].length];

如果不是这种情况，那么您需要提供问题的short, self-contained, compilable example，以便我们了解发生了什么。