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我制作了两个网格，并使用嵌套面板将它们添加到窗口中。唯一的问题是，我不能在中心移动网格，也不能在各自的网格下获取标签。我试过使用setbounds，但没用。有什么建议吗？我添加了当前状态的图像。我想在第一个和第二个网格下分别显示球员和对手标签。

public static void main(String[] args) {
    window = new JFrame();
    window.setTitle("Battleship.exe");
    window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    window.setPreferredSize(new Dimension(800, 800));

    P1_container = new JPanel(new GridLayout(10,10));
    P1_container.setPreferredSize(new Dimension(400, 400));
    P1_container.setBorder(BorderFactory.createLineBorder(Color.black, 5));

    compContainer = new JPanel(new GridLayout(10,10));
    compContainer.setPreferredSize(new Dimension(400, 400));
    compContainer.setBorder(BorderFactory.createLineBorder(Color.black, 5));

    grid = new JPanel[10][10];
    for (int i =0; i< 10; i++) {
        for (int j =0; j< 10; j++) {
            grid[i][j] = new JPanel();
            grid[i][j].setBackground(Color.white);
            grid[i][j].setBorder(BorderFactory.createLineBorder(Color.blue, 2));
            grid[i][j].setPreferredSize(new Dimension(35,35));
            P1_container.add(grid[i][j]);
        }
    }

    enemyGrid = new JPanel[10][10];
    for (int i =0; i< 10; i++) {
        for (int j =0; j< 10; j++) {
            enemyGrid[i][j] = new JPanel();
            enemyGrid[i][j].setBackground(Color.lightGray);
            enemyGrid[i][j].setBorder(BorderFactory.createLineBorder(Color.red, 2));
            enemyGrid[i][j].setPreferredSize(new Dimension(35, 35));
            compContainer.add(enemyGrid[i][j]);
        }
    }

    GridLayout layout = new GridLayout(1, 2);
    layout.setHgap(150);
    mainPanel = new JPanel(layout); 

    mainPanel.add(P1_container);
    mainPanel.add(compContainer);

    player = new JLabel("PLAYER");
    player.setBounds(100, 410, 5, 5);

    opponent = new JLabel("OPPONENT");
    opponent.setBounds(100, 410, 5, 5);

    panel = new JPanel();
    panel.setPreferredSize(new Dimension(100, 100));
    panel.add(mainPanel, BorderLayout.CENTER);
    panel.add(player, BorderLayout.WEST);
    panel.add(opponent, BorderLayout.WEST);

    window.add(panel, BorderLayout.CENTER);
    window.pack();
    window.setVisible(true);
}