嵌套Jpanel over Jframe中的问题

Question

我有一个JFrame和Jpanel超过在其中various buttons的placed.so 上的一个按钮的点击我已经被称为new class是also having containers placed in a Jpanel.所以我想show这new class panel在main Jframe panel.如何我能做到这一点？

如果我们在其中使用卡片布局,那么我如何使用它作为点击按钮我已经调用了新类的对象.如

Card layout consider each component in a container as card and i want whole Jpanel as a card so is it possible to do that???

我们可以在其中嵌套Jpanels吗？

请建议我这样做的正确方法？

这是SSCCE:

// this is the  main class on which i want to use panel of other class
public class mymain 
{
    JFrame jframe =  new JFrame();
    JPanel panel = new JPanel();
    BorderLayout borderlayout = new BorderLayout();

public mymain()
{
    jframe.setLayout(borderlayout);
    JMenuBar menubar = new JMenuBar();
    jframe.setJMenuBar(menubar);

    JButton home_button = new JButton("HOME");
    menubar.add(home_button);
    jframe.getContentPane().add(panel,BorderLayout.CENTER);             
    panel.setLayout(new GridBagLayout());

    //here used containers over that frame              
             and call it from main()

}

here is another class to manage category is 

public class manageCategory 
{
JPanel panel = new JPanel();
GridBagLayout gridbglayout = new GridBagLayout();
GridBagConstraints gridbgconstraint = new GridBagConstraints();
public manageCategory()
{
            panel.setLayout(new BorderLayout());
    // i have again here used containers placed with grid bag layout
}

}

所以现在我想要,因为我click on home button在mymain课堂panel上使用的那个manageCategory()应该是displayed在同一个面板上.当我再次点击home按钮然后mymain panel得到显示.我可以这样做吗???

Answer 1

我建议您使用 aCardLayout来完成此任务。

JPanel使用“类”更新了示例：

static class MainPanel extends JPanel {
    public MainPanel(final Container frame) {
        add(new JButton(new AbstractAction("Click to view next") {
            @Override
            public void actionPerformed(ActionEvent e) {
                frame.add(new NextPanel(), "NextPanel");
                ((CardLayout) frame.getLayout()).show(frame, "NextPanel");
            }
        }));
    }
}

static class NextPanel extends JPanel {
    public NextPanel() {
        add(new JLabel("Next page in the card layout"));
    }
}

public static void main(String[] args) throws Exception {
    JFrame frame = new JFrame("Test");
    frame.setLayout(new CardLayout());
    frame.add(new MainPanel(frame.getContentPane()), "MainPanel");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(400, 300);
    frame.setVisible(true);
}