Javax.swing.GroupLayout - problem

Hi
Puzzling problem has occurred when developing the same application on different PC�s and using the same IDE (Netbeans 5.5) on both.
The problem is that the �javax.swing.GroupLayout� class is being used when inserting netbeans GUI components on one of the PC�s. However, the other PC uses �org.jdesktop.layout.GroupLayout� and generates an error when trying to compile the �javax.swing.GroupLayout� components. It cannot find the javax.swing.GroupLayout� class.
The jdk is jdk 6 for both.
Can anyone shed any light on this?
Regards
GB

Did you check the project properties?
Project properties | Categories: Libraries --> Java Platform: JDK 1.6
(javax.swing.GroupLayout works only with 1.6)

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Thanks

javax.swing.GroupLayout is since version 1.6.
{color:#000080}If you are getting an error when trying to import the class, you have an earlier version of the jdk.
If you cannot see the class in the documentation, you are referring to the documentation for an earlier version.{color}
http://java.sun.com/javase/6/docs/api/javax/swing/GroupLayout.html
{color:#000080}db{color}

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Hello,
I have an exception in my Japplet and i can`t find the problem. Can somebody find the exception.
Thanks in advance
Bart
This is the exception:
Exception in thread "main" java.lang.IllegalArgumentException: Component must be non-null
at javax.swing.GroupLayout$ComponentSpring.<init>(GroupLayout.java:2878)
at javax.swing.GroupLayout$ComponentSpring.<init>(GroupLayout.java:2858)
at javax.swing.GroupLayout$Group.addComponent(GroupLayout.java:1490)
at javax.swing.GroupLayout$ParallelGroup.addComponent(GroupLayout.java:2414)
at javax.swing.GroupLayout$ParallelGroup.addComponent(GroupLayout.java:2384)
at javax.swing.GroupLayout$Group.addComponent(GroupLayout.java:1471)
at javax.swing.GroupLayout$ParallelGroup.addComponent(GroupLayout.java:2406)
My Code:
package gui;
import javax.swing.*;
import java.awt.*;
public class Gui extends JPanel {
    * File:         Gui.java
    * Version:      1.0
    * Description: The Gui of a simple spot editing tool for the web.
    * @author       Bart
    * Date:         30-10-2008
    @SuppressWarnings("unchecked")
    private JButton btnPost;
    private JLabel lblSpotter;
    private JLabel lblDatum;
    private JLabel lblTijd;
    private JLabel lblVogelsoort;
    private JLabel lblLocation;
    private JLabel lblFoto;
    private JLabel lblCommentaar;
    private JLabel sl1;
    private JLabel sl2;
    private JLabel dp1;
    private JTextField inputSpotter;
    private JTextField inputDag;
    private JTextField inputUur;
    private JTextField inputVogelsoort;
    private JTextField inputMaand;
    private JTextField inputJaar;
    private JTextField inputMin;
    private JTextField inputLocAB;
    private JTextField inputLoc1234;
    private JTextField inputLoc5678;
    private JTextArea inputCommentaar;
    private JScrollPane jScrollPane1;
     * Method: Constructor Gui
     * Description:
    public Gui() {
     * Method: Constructor Gui
     * Description:
    private void init() {
        this.setVisible(true);
     //buttons
     btnPost = new JButton("Verzend");
     //labels
     lblSpotter = new JLabel("Spotter: ");
        lblDatum = new JLabel("Datum: ");
        lblTijd = new JLabel("Tijd: ");
        lblVogelsoort = new JLabel("Vogelsoort: ");
        lblLocation = new JLabel("Location: ");
        lblCommentaar = new JLabel("Commentaar: ");
        sl1 = new JLabel("/");
        sl2 = new JLabel("/");
        dp1 = new JLabel(":");
     //textfields & areas & scrollpane
     inputSpotter = new JTextField();
        inputDag = new JTextField();
        inputUur = new JTextField();
        inputVogelsoort = new JTextField();
        inputMaand = new JTextField();
        inputJaar = new JTextField();
        inputMin = new JTextField();
        inputLocAB = new JTextField();
        inputLoc1234 = new JTextField();
        inputLoc5678 = new JTextField();
        inputCommentaar = new JTextArea();
        inputCommentaar.setColumns(20);
        inputCommentaar.setRows(5);
     jScrollPane1 = new JScrollPane();
        jScrollPane1.setViewportView(inputCommentaar);
     //grouplayout & adding labels,textfields,textareas to layout
        GroupLayout layout = new GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
                    .addComponent(lblCommentaar)
                    .addGroup(layout.createSequentialGroup()
                        .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
                            .addComponent(lblVogelsoort)
                            .addComponent(lblLocation)
                            .addComponent(lblTijd)
                            .addComponent(lblDatum)
                            .addComponent(lblSpotter)))
                    .addComponent(lblFoto))
                .addGap(7, 7, 7)
                .addGroup(layout.createParallelGroup(GroupLayout.Alignment.TRAILING, false)
                    .addGroup(GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING, false)
                            .addComponent(inputDag)
                            .addComponent(inputUur, GroupLayout.DEFAULT_SIZE, 57, Short.MAX_VALUE))
                        .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
                            .addComponent(sl1)
                            .addComponent(dp1))
                        .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING, false)
                            .addComponent(inputMin, GroupLayout.DEFAULT_SIZE, 61, Short.MAX_VALUE)
                            .addComponent(inputMaand))
                        .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(sl2)
                        .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(inputJaar))
                    .addComponent(jScrollPane1, GroupLayout.Alignment.LEADING)
                    .addGroup(GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
                        .addComponent(inputLocAB, GroupLayout.PREFERRED_SIZE, 53, GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(inputLoc1234, GroupLayout.PREFERRED_SIZE, 63, GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(inputLoc5678))
                    .addComponent(inputSpotter, GroupLayout.Alignment.LEADING, GroupLayout.DEFAULT_SIZE, 189, Short.MAX_VALUE)
                    .addComponent(inputVogelsoort, GroupLayout.Alignment.LEADING)
                    .addComponent(btnPost))
                .addContainerGap(31, Short.MAX_VALUE))
        layout.setVerticalGroup(
            layout.createParallelGroup(GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGap(26, 26, 26)
                        .addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                            .addComponent(lblDatum)
                            .addComponent(inputDag, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
                            .addComponent(inputMaand, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
                            .addComponent(inputJaar, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
                            .addComponent(inputLocAB)
                            .addComponent(inputLoc1234)))
                    .addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                        .addComponent(lblSpotter)
                        .addComponent(inputSpotter, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)))
                .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                    .addComponent(lblTijd)
                    .addComponent(inputUur, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
                    .addComponent(inputMin, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
                    .addComponent(dp1))
                .addGap(7, 7, 7)
                .addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                    .addComponent(lblVogelsoort)
                    .addComponent(inputVogelsoort, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                    .addComponent(lblLocation)
                    .addComponent(inputLocAB, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
                    .addComponent(inputLoc1234, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
                    .addComponent(inputLoc5678, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
                    .addComponent(lblCommentaar)
                    .addComponent(jScrollPane1, GroupLayout.PREFERRED_SIZE, 78, GroupLayout.PREFERRED_SIZE))
                .addGap(6, 6, 6)
                .addComponent(lblFoto)
                .addGap(21, 21, 21)
                .addComponent(btnPost)
                .addContainerGap())
      * Method: Start
      * Description:
     public void start() {
      * Method: Stop
      * Description:
     public void Stop() {
      * Method: Destroy
      * Description:
     public void destroy() {
     public static void main(String args[]){
          Gui gui = new Gui();
                gui.init();
}

I`ve changed JPanel into JApplet and init() into go() ,and start(),destroy() and stop() are disabled.
But at the end i want to have the applet into a webbrowser. And i can`t find the error, GroupLayout layout - new GroupLayout(this) seems good in my vision. The error is on the "this" part, is it possible to give the this a value?
Complete Exception
Exception in thread "main" java.lang.IllegalArgumentException: Component must be non-null
        at javax.swing.GroupLayout$ComponentSpring.<init>(GroupLayout.java:2878)
        at javax.swing.GroupLayout$ComponentSpring.<init>(GroupLayout.java:2858)
        at javax.swing.GroupLayout$Group.addComponent(GroupLayout.java:1490)
        at javax.swing.GroupLayout$ParallelGroup.addComponent(GroupLayout.java:2414)
        at javax.swing.GroupLayout$ParallelGroup.addComponent(GroupLayout.java:2384)
        at javax.swing.GroupLayout$Group.addComponent(GroupLayout.java:1471)
        at javax.swing.GroupLayout$ParallelGroup.addComponent(GroupLayout.java:2406)
        at gui.Gui.init(Gui.java:98)
        at gui.Gui.main(Gui.java:212)
Java Result: 1Thanks in advance,
Bart

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i compile it with jdk1.2.2
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~

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private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextArea jTextArea1;
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Oktalrechner.java:8: Package javax.swing not found in import.
import javax.swing.*;
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I'm using JDK1.2BETA4

Tell me when you execute java -version, what you are getting?
Looks like you are suing old JDK.
Download the latest public release JDK1.4 from http://java.sun.com
/Sreenivasa Kumar Majji.
Did somebody help you? I have a similar problem with
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I start my programm with:
import java.awt.*;
import java.awt.event.*;
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Some of my friends say it is a java bug.
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type
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you could also try
which javato see the actuall executable that you are running.

Javax.swing.GroupLayout - problem

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