Make an added JPanel visible inside a parent JPanel

Question

How to make an added JPanel visible inside a parent JPanel?

I am using Netbeans for designing my UI.

I have a MainFrame.java<

Answer 1

Use the CardLayout. Below is a Helper class that I have written. Hope it helps.

import java.awt.CardLayout;

import javax.swing.JPanel;

/**
 * 
 * @author Dchan(Dulitha Wijewantha)
 * 
 *         This class is used to switch Cards in a CardLayout
 * 
 * @version $Revision: 1.0 $
 */
public class CardLayoutHelper {

    private JPanel panel;
    private CardLayout layout;

    /**
     * 

     * @param panel JPanel
     */
    public CardLayoutHelper(JPanel panel) {
        this.panel = panel;
        this.layout = (CardLayout) this.panel.getLayout();
    }
    public CardLayoutHelper(JPanel panel, JPanel... panels){
        this(panel);
        for (int i = 0; i < panels.length; i++) {
            JPanel jPanel = panels[i];
            panel.add(jPanel.getName(), jPanel);
        }
    }

    /**
     * 
     * @param currentPanel
     *            - The panel that will be switched into the view
     */
    public void switchPanel(JPanel currentPanel) {
        panel.removeAll();
        panel.add(currentPanel, currentPanel.getName());
        layout.show(panel, currentPanel.getName());
        panel.revalidate();
        panel.repaint();
    }
    public void switchPanel(String name){
        layout.show(panel, name);
        panel.revalidate();
        panel.repaint();
    }
}