NewMasterDetailForm is not working with setVisible(true)

Question

I've two jFrame main.java and NewMasterDetailForm.java. Using following code I'm trying to open the NewMasterDetailForm.java, but it is not opening -

NewMasterDetailForm call= new NewMasterDetailForm();
call.setVisible(true);

I'd also tried

new NewMasterDetailForm().setVisible(true)

I've put above code into a button and the complete code is as follows

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
NewMasterDetailForm call= new NewMasterDetailForm();
call.setVisible(true);       

    }

I have created NewMasterDetailForm.java using the in-built feature in IDE NetBeans which has generated the entire script itself. It main consist of connectivity information with MySQL and fetches details from it. NewMasterDetailForm.java contains following code

package yc;

import java.awt.EventQueue;
import java.beans.Beans;
import javax.swing.JFrame;
import javax.swing.JPanel;

/**
 *
 * @author Raam
 */
public class NewMasterDetailForm extends JPanel {

    public NewMasterDetailForm() {
        initComponents();
        if (!Beans.isDesignTime()) {
            entityManager.getTransaction().begin();
            this.setOpaque(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() {
        bindingGroup = new org.jdesktop.beansbinding.BindingGroup();

        entityManager = java.beans.Beans.isDesignTime() ? null : javax.persistence.Persistence.createEntityManagerFactory("yello_cab?zeroDateTimeBehavior=convertToNullPU").createEntityManager();
        query = java.beans.Beans.isDesignTime() ? null : entityManager.createQuery("SELECT y FROM YcTable y");
        list = java.beans.Beans.isDesignTime() ? java.util.Collections.emptyList() : org.jdesktop.observablecollections.ObservableCollections.observableList(query.getResultList());
        masterScrollPane = new javax.swing.JScrollPane();
        masterTable = new javax.swing.JTable();
        jButton1 = new javax.swing.JButton();
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();

        FormListener formListener = new FormListener();

        org.jdesktop.swingbinding.JTableBinding jTableBinding = org.jdesktop.swingbinding.SwingBindings.createJTableBinding(org.jdesktop.beansbinding.AutoBinding.UpdateStrategy.READ_WRITE, list, masterTable);
        org.jdesktop.swingbinding.JTableBinding.ColumnBinding columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${bookId}"));
        columnBinding.setColumnName("Book Id");
        columnBinding.setColumnClass(Integer.class);
        columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${cuName}"));
        columnBinding.setColumnName("Cu Name");
        columnBinding.setColumnClass(String.class);
        columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${mobile}"));
        columnBinding.setColumnName("Mobile");
        columnBinding.setColumnClass(String.class);
        columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${noPersons}"));
        columnBinding.setColumnName("No Persons");
        columnBinding.setColumnClass(Integer.class);
        columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${email}"));
        columnBinding.setColumnName("Email");
        columnBinding.setColumnClass(String.class);
        columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${gender}"));
        columnBinding.setColumnName("Gender");
        columnBinding.setColumnClass(String.class);
        columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${cabType}"));
        columnBinding.setColumnName("Cab Type");
        columnBinding.setColumnClass(String.class);
        columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${PPoint}"));
        columnBinding.setColumnName("PPoint");
        columnBinding.setColumnClass(String.class);
        columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${DPoint}"));
        columnBinding.setColumnName("DPoint");
        columnBinding.setColumnClass(String.class);
        columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${PTime}"));
        columnBinding.setColumnName("PTime");
        columnBinding.setColumnClass(String.class);
        columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${PDate}"));
        columnBinding.setColumnName("PDate");
        columnBinding.setColumnClass(String.class);
        columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${riderType}"));
        columnBinding.setColumnName("Rider Type");
        columnBinding.setColumnClass(String.class);
        columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${paymentMode}"));
        columnBinding.setColumnName("Payment Mode");
        columnBinding.setColumnClass(String.class);
        bindingGroup.addBinding(jTableBinding);

        masterScrollPane.setViewportView(masterTable);

        jButton1.setText("Close");
        jButton1.addActionListener(formListener);

        jLabel1.setIcon(new javax.swing.ImageIcon(getClass().getResource("/yc/yc.png"))); // NOI18N

        jLabel2.setFont(new java.awt.Font("Tahoma", 2, 18)); // NOI18N
        jLabel2.setText("Contact 24x7 ");

        jLabel3.setFont(new java.awt.Font("Tahoma", 0, 18)); // NOI18N
        jLabel3.setText("1800-1100-MEGHA");

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(masterScrollPane, javax.swing.GroupLayout.DEFAULT_SIZE, 804, Short.MAX_VALUE)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jLabel1)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jLabel2, javax.swing.GroupLayout.Alignment.TRAILING)
                            .addComponent(jLabel3, javax.swing.GroupLayout.Alignment.TRAILING)))
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addGap(0, 0, Short.MAX_VALUE)
                        .addComponent(jButton1)))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jLabel1)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jLabel2)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jLabel3)))
                .addComponent(masterScrollPane, javax.swing.GroupLayout.PREFERRED_SIZE, 452, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addComponent(jButton1)
                .addContainerGap())
        );

        bindingGroup.bind();
    }

    // Code for dispatching events from components to event handlers.

    private class FormListener implements java.awt.event.ActionListener {
        FormListener() {}
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            if (evt.getSource() == jButton1) {
                NewMasterDetailForm.this.jButton1ActionPerformed(evt);
            }
        }
    }// </editor-fold>                        

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        new main().setVisible(true);
        this.setVisible(false);

    }                                        




    // Variables declaration - do not modify                     
    private javax.persistence.EntityManager entityManager;
    private javax.swing.JButton jButton1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private java.util.List<yc.YcTable> list;
    private javax.swing.JScrollPane masterScrollPane;
    private javax.swing.JTable masterTable;
    private javax.persistence.Query query;
    private org.jdesktop.beansbinding.BindingGroup bindingGroup;
    // End of variables declaration                   
    public static void main(String[] args) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(NewMasterDetailForm.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(NewMasterDetailForm.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(NewMasterDetailForm.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(NewMasterDetailForm.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                JFrame frame = new JFrame();
                frame.setContentPane(new NewMasterDetailForm());
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.pack();
                frame.setVisible(true);
            }
        });
    }

}

Consider providing a [runnable example](https://stackoverflow.com/help/mcve) which demonstrates your problem. This is not a code dump, but an example of what you are doing which highlights the problem you are having. This will result in less confusion and better responses — MadProgrammer, Dec 18 '15 at 08:48
I am sorry, but you should be respectful to others on StackOver. In fact, I am sure you have never worked with NewMasterDetailForm and jFrame. — Raag Singh, Dec 18 '15 at 08:53
I've never worked with `NewMasterDetailForm`, because you've never shown it to us, `JFrame`, now, I've worked with that for 16+ years, since Java 1.3, but of course, wth respect, if you don't want our help, that is, of course, entirely your choice — MadProgrammer, Dec 18 '15 at 08:56
I am sorry for the wrong judgment. Well, now I've updated the question. — Raag Singh, Dec 18 '15 at 09:09
See [The Use of Multiple JFrames, Good/Bad Practice?](http://stackoverflow.com/q/9554636/418556) — Andrew Thompson, Dec 18 '15 at 09:28
Note that if you are dealing with multiple frames, this will turn out to be a 'show stopper'.. `frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);` — Andrew Thompson, Dec 18 '15 at 09:29
`new main().setVisible(true);` I am surprised that even compiled. You have a class called `main`? — Andrew Thompson, Dec 18 '15 at 09:31
@Andrew `main` is no keyword in Java. It is just the name of a method which is used as entry point. It would even be possible to have a class `main` with a method `main` in it (`new main().main()`), although no one will do that. — Tobias Liefke, Dec 18 '15 at 16:01
@TobiasLiefke *"It is just the name of a method.."* Not a method in that code, it isn't. (There is a `main(String[])` method, but no `main()` method.) — Andrew Thompson, Dec 18 '15 at 23:31

score 2 · Answer 1 · edited Dec 18 '15 at 18:06

2

Your NewMasterDetailForm is a JPanel, you need to wrap it in some kind of window, like a JFrame, similarly to the last portion of the classes main method, for example

JFrame frame = new JFrame();
frame.setContentPane(new NewMasterDetailForm());
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.pack();
frame.setVisible(true);

edited Dec 18 '15 at 18:06

user1803551

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answered Dec 18 '15 at 09:29

MadProgrammer

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@user1803551 Typing on phone – MadProgrammer Dec 18 '15 at 18:05
O.K., fixed it for you :) – user1803551 Dec 18 '15 at 18:07

NewMasterDetailForm is not working with setVisible(true)

1 Answers1