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Thread: How to Add JPanel to JFrame during run-time

  1. #1
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    Post How to Add JPanel to JFrame during run-time

    Hi All,

    Please find the below code, when i tried to add a panel to frame
    during run-time, am unable display the panel in main frame.

    how to add the panel during run-time.
    please findout the issue in the below code

     
    Panel class
     
    import java.awt.ComponentOrientation;
    import java.util.Locale;
     
    public class PanelOne extends javax.swing.JPanel {
     
    /**
    * Creates new form PanelOne
    */
    public PanelOne() {
    initComponents();
    }
     
    public boolean initApp() {
     
    applyComponentOrientation(ComponentOrientation.get Orientation(Locale.getDefault()));
    setVisible(true);
    return true;
    }
     
    private void initComponents() {
     
    jPanel1 = new javax.swing.JPanel();
    jLabel1 = new javax.swing.JLabel();
    jTextField1 = new javax.swing.JTextField();
     
    jPanel1.setBorder(new javax.swing.border.MatteBorder(null));
     
    jLabel1.setText("PanelOne");
     
    jTextField1.setText("jTextField1");
     
    org.jdesktop.layout.GroupLayout jPanel1Layout = new org.jdesktop.layout.GroupLayout(jPanel1);
    jPanel1.setLayout(jPanel1Layout);
    jPanel1Layout.setHorizontalGroup(
    jPanel1Layout.createParallelGroup(org.jdesktop.lay out.GroupLayout.LEADING)
    .add(jPanel1Layout.createSequentialGroup()
    .addContainerGap()
    .add(jPanel1Layout.createParallelGroup(org.jdeskto p.layout.GroupLayout.LEADING)
    .add(jLabel1)
    .add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 119, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
    .addContainerGap(165, Short.MAX_VALUE))
    );
    jPanel1Layout.setVerticalGroup(
    jPanel1Layout.createParallelGroup(org.jdesktop.lay out.GroupLayout.LEADING)
    .add(jPanel1Layout.createSequentialGroup()
    .add(22, 22, 22)
    .add(jLabel1)
    .addPreferredGap(org.jdesktop.layout.LayoutStyle.R ELATED)
    .add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
    .addContainerGap(99, Short.MAX_VALUE))
    );
     
    org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(this);
    this.setLayout(layout);
    layout.setHorizontalGroup(
    layout.createParallelGroup(org.jdesktop.layout.Gro upLayout.LEADING)
    .add(layout.createSequentialGroup()
    .addContainerGap()
    .add(jPanel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
    .addContainerGap(org.jdesktop.layout.GroupLayout.D EFAULT_SIZE, Short.MAX_VALUE))
    );
    layout.setVerticalGroup(
    layout.createParallelGroup(org.jdesktop.layout.Gro upLayout.LEADING)
    .add(org.jdesktop.layout.GroupLayout.TRAILING, layout.createSequentialGroup()
    .addContainerGap(org.jdesktop.layout.GroupLayout.D EFAULT_SIZE, Short.MAX_VALUE)
    .add(jPanel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
    .addContainerGap(org.jdesktop.layout.GroupLayout.D EFAULT_SIZE, Short.MAX_VALUE))
    );
    }// </editor-fold> 
    // Variables declaration - do not modify 
    private javax.swing.JLabel jLabel1;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JTextField jTextField1;
    // End of variables declaration 
    }
     
     
    Main JFrame Class
     
     
    import java.awt.BorderLayout;
    import javax.swing.JFrame;
     
    public class Frame extends javax.swing.JFrame {
     
    private PanelOne one;
     
    /**
    * Creates new form JFrame
    */
    public Frame() {
    initComponents();
    }
     
    public void initFrame() {
     
    one = new PanelOne(); 
     
    if (one.initApp()) {
     
    add(one, BorderLayout.CENTER);
    setTitle("Main Frame");
    pack();
    setLocationRelativeTo(null);
    setVisible(true);
     
    }
     
    }
     
    /**
    * This method is called from within the constructor to initialize the form.
    * WARNING: Do NOT modify this code. The content of this method is always
    * regenerated by the Form Editor.
    */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code"> 
    private void initComponents() {
     
    setDefaultCloseOperation(javax.swing.WindowConstan ts.EXIT_ON_CLOSE);
     
    org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
    getContentPane().setLayout(layout);
    layout.setHorizontalGroup(
    layout.createParallelGroup(org.jdesktop.layout.Gro upLayout.LEADING)
    .add(0, 557, Short.MAX_VALUE)
    );
    layout.setVerticalGroup(
    layout.createParallelGroup(org.jdesktop.layout.Gro upLayout.LEADING)
    .add(0, 481, Short.MAX_VALUE)
    );
     
    pack();
    }// </editor-fold> 
     
    public static void main(String args[]) {
    Frame f = new Frame();
    f.initFrame();
    }
     
     
    /**
    * @param args the command line arguments
    */
    // Variables declaration - do not modify 
    // End of variables declaration 
     
    }


  2. #2
    Super Moderator pbrockway2's Avatar
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    Default Re: How to Add JPanel to JFrame during run-time

    Moved to AWT/Swing forum.

  3. #3
    Junior Member
    Join Date
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    Default

    I'm a beginner but...can solve your problem to create the new panel object `one' in Frame constructor instead in a separate method?

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