Please me figure this out

when I press the button I expected to see the textfield (TestGroupLayer) but instead I do not see anything at all. It only shows an empty frame. I am trying to learn this GroupLayer since it best suites my needs so please someones help. here is the code :

Code:

---

package test.gui;



 
import javax.swing.*;
import static javax.swing.GroupLayout.Alignment.*;

public class TestGroupLayer extends JPanel {
       
        JTextField textField1;
    public TestGroupLayer() {
     
            textField1 = new JTextField ();

        GroupLayout layout = new GroupLayout(this);
        this.setLayout(layout);
        layout.setAutoCreateGaps(true);
        layout.setAutoCreateContainerGaps(true);

        layout.setHorizontalGroup(layout.createSequentialGroup()
            .addComponent(textField1)
         
            .addGroup(layout.createParallelGroup(LEADING)
                .addGroup(layout.createSequentialGroup()
                    .addGroup(layout.createParallelGroup(LEADING)
                                  )
         
        )));
        layout.setVerticalGroup(layout.createSequentialGroup()
            .addGroup(layout.createParallelGroup(BASELINE)
                    .addComponent(textField1)
                .addGroup(layout.createSequentialGroup()
                    .addGroup(layout.createParallelGroup(BASELINE)
                                      )
        )));
 
    }
 
}

---

Code:

---

package test.gui;

import static javax.swing.GroupLayout.Alignment.BASELINE;
import static javax.swing.GroupLayout.Alignment.LEADING;

 
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;



public class TestLayerOne extends JPanel {

        TestLayerTwo layerTwo;
    private JButton btn;
   
    public TestLayerOne() {
        initComponents();
    }

 
    private void initComponents() {
       
            btn = new JButton();

            btn.setText("Button");
        btn.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent evt) {
                btnActionPerformed(evt);
            }
        });
        add(btn, new GroupLayout(this));
   
           
           
        GroupLayout layout = new GroupLayout(this);
        this.setLayout(layout);
        layout.setAutoCreateGaps(true);
        layout.setAutoCreateContainerGaps(true);

        layout.setHorizontalGroup(layout.createSequentialGroup()
            .addComponent(btn)
         
            .addGroup(layout.createParallelGroup(LEADING)
                .addGroup(layout.createSequentialGroup()
                    .addGroup(layout.createParallelGroup(LEADING)
                                  )
         
        )));
        layout.setVerticalGroup(layout.createSequentialGroup()
            .addGroup(layout.createParallelGroup(BASELINE)
                    .addComponent(btn)
                .addGroup(layout.createSequentialGroup()
                    .addGroup(layout.createParallelGroup(BASELINE)
                                      )
        )));
 
    }
   
    private void btnActionPerformed(ActionEvent evt) {
       
 
            TestGroupLayer groupLayer = new TestGroupLayer ();
            removeAll ();
            add (groupLayer, new GroupLayout (this));
            validate ();
            System.out.println("This is a Test");
    }
   
     
}

---

Code:

---

package test.gui;


import java.awt.Dimension;
import javax.swing.JFrame;
import javax.swing.JTabbedPane;



public class TabPanels extends JFrame{

        JFrame myFrame = null;
        // main to run and test this part of the program

public static void main(String [] args)  { 
    new TabPanels();
}
       
        public TabPanels() {
            JTabbedPane tp = new JTabbedPane();
            add(tp);
       
            tp.addTab("Tab1",new TestLayerOne());
            tp.addTab("Tab2", new TestGroupLayer());
            tp.addTab("Tab3", new TestGroupLayer());
       
            setPreferredSize(new Dimension(1360,768));
            pack();
            setVisible(true);
        }
}

---

My suggestion: don't use GroupLayout as it is very difficult to code by hand. Instead use nested JPanels that each use simpler layouts to satisfy your needs.

ok.. but I still would like to know about this problem tho since I think I am so close. So please someone explain it to me .. please please

Do you read the responses to your questions? Evidently not.
http://www.java-forums.org/new-java/...tml#post282826

db

well this is a new issue tho. I was able to get rid of my exception problem with yr help and I was able to see the button and the textfield also but when I press the button it disapears also I was trying with GroupLayer.

So once again you didn't click the link I posted.

I sometimes wonder why I bother.

db

if you are talking about the new members guide then yes I did read it but I read it after I posted this and I didnt want to start another thread by changing the title since thats violate one of the rule too.. sorry about that... also I know you mentioned about using different layout but I really want to finish this first so thought someone hopefully and probably will help and point me to the right direction.

You may not get much help as not many folks I know use GroupLayout to hand code their layouts, so the pool of potential experts to help you in this subject is limited.