在java中如何在边框布局中嵌入网格布局

我有一个边框布局，我想在中间部分添加一个网格布局。但是，我不能先声明网格，然后再添加中心边框。我该怎么做

public Liability_Calculator(String s)
{
    super(s);
    setSize(325,200);
    
    c = getContentPane();
    c.setLayout(new BorderLayout());
    
    //the top label
    total = new JLabel("Total monthly liabilities ", JLabel.CENTER);
    c.add(total, BorderLayout.NORTH);
    
    
    //the grid
    GridLayout grid = new GridLayout(2,2);
    
    text_field1 = new JTextField(7);
    
    //I GET AN ERROR HERE!!!!!!!
    grid.add(text_field1);

    //AND ERROR HERE!!!!!!!!!!!!!
    c.add(grid, BorderLayout.CENTER);
    
    

    
    setVisible(true);
}

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您试图将组件添加到布局中，但这根本无法完成。而是使用一个JPanel，给它一个GridLayout，然后将组件添加到JPanel（这里充当“容器”）

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一般来说，您会希望使用GUI的最佳布局来嵌套JPanel，其中内部JPanel使用GridLayout，外部JPanel使用BorderLayout。然后，您只需在BorderLayout.CENTER位置将内部JPanel添加到外部JPanel（此处为您的内容窗格）。

提供源于气垫船答案的代码可视化：

显示类：

public class Display extends JFrame     {

JPanel gridHolder = new JPanel(); // panel to store the grid
private GridLayout buttonsGrid; // space containing a buttons
private JButton myButtons[]; // grid is to be filled with these buttons
private BorderLayout mainGUILayout; // main gui layout
private Container mainGuiContainer;

public Display()     {
    mainGUILayout = new BorderLayout(5,5); // Border layout option
    mainGuiContainer = getContentPane(); // getting content pane
    mainGuiContainer.setLayout(mainFrameLayout); // setting main layout
    buttonsGrid = new GridLayout(4, 1, 5, 5); // 4 buttons one over the other
    myButtons = new JButton[4]; // player's hand represented with buttons
    gridHolder.setLayout(buttonsGrid);

                for (int x = 0; x < 4; x++)     {
                
                myButtons[x] = new JButton (" ");
                gridHolder.add(myButtons[x]);     }

            add(gridHolder, BorderLayout.WEST);
            setVisible(true);     }     }

public class MainGUILaunch     {
    public static void main (String args[])     {
        Display myApplication = new Display();
        myApplication.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        myApplication.setSize(1024, 1024);
        myApplication.setVisible(true); // displaying application     }
} // End of MainGUILaunch