这样的棋盘中，如何实现棋盘的格子随鼠标移动而高亮public ChessGameFrame(int width, int height) { setTitle("斗兽棋"); //设置标题 this.WIDTH = width; this.HEIGTH = height; this.ONE_CHESS_SIZE = (HEIGTH * 4 / 5) / 9; setSize(WIDTH, HEIGTH); setLocationRelativeTo(null); // Center the window. setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); //设置程序关闭按键，如果点击右上方的叉就游戏全部关闭了 setLayout(null); addRestart(); addGiveUp(); addUndo(); addChessboard(); addLabel(); addLoadButton(); addSave(); addAImode(); addAImodeGreedy(); addBackground(); }public CellComponent(Color background, Point location, int size) { setLayout(new GridLayout(1,1)); setLocation(location); setSize(size, size); this.background = background; } @Override protected void paintComponent(Graphics g) { super.paintComponents(g); g.setColor(background); g.fillRect(1, 1, this.getWidth()-1, this.getHeight()-1); } }

您可以在棋盘的每个格子上添加一个 MouseListener，当鼠标移入时，修改该格子的背景色为高亮色，当鼠标移出时，修改背景色为原来的颜色。具体实现可以参考下面的代码：

public class CellComponent extends JPanel {
    private Color background;
    private boolean isHighlighted = false;
    private Point location;
    private int size;

    public CellComponent(Color background, Point location, int size) {
        setLayout(new GridLayout(1, 1));
        setLocation(location);
        setSize(size, size);
        this.background = background;

        addMouseListener(new MouseAdapter() {
            @Override
            public void mouseEntered(MouseEvent e) {
                setBackground(getHighlightColor());
                isHighlighted = true;
            }

            @Override
            public void mouseExited(MouseEvent e) {
                setBackground(background);
                isHighlighted = false;
            }
        });
    }

    private Color getHighlightColor() {
        float[] hsbVals = new float[3];
        Color.RGBtoHSB(background.getRed(), background.getGreen(), background.getBlue(), hsbVals);
        hsbVals[1] = Math.min(1.0f, hsbVals[1] * 2);
        hsbVals[2] = Math.min(1.0f, hsbVals[2] * 1.5f);
        return Color.getHSBColor(hsbVals[0], hsbVals[1], hsbVals[2]);
    }

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        g.setColor(background);
        g.fillRect(1, 1, this.getWidth() - 1, this.getHeight() - 1);
    }

    public boolean isHighlighted() {
        return isHighlighted;
    }

    public void setBackground(Color color) {
        this.background = color;
        super.setBackground(color);
    }
}

这里需要注意的是，为了避免高亮色过于鲜艳，我们可以在原来的颜色基础上稍微调整一下饱和度和亮度，使得高亮色更加柔和。