When selecting the maximum property for a JInternalFrame the generated source
code places the setMaximum in the wrong location. The setMaximum call should be
after the JInternalFrame is added the JDesktopPane. When setMaximum is called
the JDK attempts to lookup the size of the JInternalFrame's parent. Since the
JInternalFrame has not yet been added to the JDesktopPane no parent exists and
therefore it throws a NullPointerException.

Steps to reproduce:

NOTE: It is expected that a General > Java Application has been created.

1) Right click "Source Packages" and select "New > JFrame Form"
2) Type MasterJFrame in the "Class Name" field
3) Click "Finish"
4) Right click Frame in Form editor and select "Set Layout > BorderLayout"
5) From the Palette, select JDesktopPane and add it to the MasterJFrame.
6) From the Palette, select JInternalFrame and add it to the JDesktopPane that
you created in step 5.
7) Select the JInternalFrame you just added and from the "JInternalFrame >
Properties" dialog select the maximum property.
8) From the Projects dialog right click the MasterJFrame.java file and select
"Run File"
9) You will receive the Exception in FIGURE 1.
10) Select the MasterJFrame.java tab in the editor and click the "Source"
button. You will see the code in FIGURE 2.
11) Notice that the setMaximum is being called before the JInternalFrame is
added to the JDesktopPane.


FIGURE 1
=======================================
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
        at
javax.swing.DefaultDesktopManager.maximizeFrame(DefaultDesktopManager.java:96)
        at
javax.swing.plaf.basic.BasicInternalFrameUI.maximizeFrame(BasicInternalFrameUI.java:521)
        at
javax.swing.plaf.basic.BasicInternalFrameUI$Handler.propertyChange(BasicInternalFrameUI.java:1569)
        at
java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:333)
        at
java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:270)
        at java.awt.Component.firePropertyChange(Component.java:7159)
        at javax.swing.JInternalFrame.setMaximum(JInternalFrame.java:959)
        at MasterJFrame.initComponents(MasterJFrame.java:30)
        at MasterJFrame.<init>(MasterJFrame.java:15)
        at MasterJFrame$1.run(MasterJFrame.java:59)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
        at
java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
        at
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)

FIGURE 2
=======================================
/*
 * MasterJFrame.java
 *
 * Created on October 15, 2006, 6:32 PM
 */

/**
 *
 * @author  bgoodin
 */
public class MasterJFrame extends javax.swing.JFrame {
    
    /** Creates new form MasterJFrame */
    public MasterJFrame() {
        initComponents();
    }
    
    /** 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.
     */
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">          
               
    private void initComponents() {
        jDesktopPane1 = new javax.swing.JDesktopPane();
        jInternalFrame1 = new javax.swing.JInternalFrame();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        try {
            jInternalFrame1.setMaximum(true);
        } catch (java.beans.PropertyVetoException e1) {
            e1.printStackTrace();
        }
        jInternalFrame1.setVisible(true);
        org.jdesktop.layout.GroupLayout jInternalFrame1Layout = new
org.jdesktop.layout.GroupLayout(jInternalFrame1.getContentPane());
        jInternalFrame1.getContentPane().setLayout(jInternalFrame1Layout);
        jInternalFrame1Layout.setHorizontalGroup(
           
jInternalFrame1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(0, 394, Short.MAX_VALUE)
        );
        jInternalFrame1Layout.setVerticalGroup(
           
jInternalFrame1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(0, 274, Short.MAX_VALUE)
        );
        jInternalFrame1.setBounds(160, 120, 24, 26);
        jDesktopPane1.add(jInternalFrame1, javax.swing.JLayeredPane.DEFAULT_LAYER);

        getContentPane().add(jDesktopPane1, java.awt.BorderLayout.CENTER);

        pack();
    }// </editor-fold>                        
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new MasterJFrame().setVisible(true);
            }
        });
    }
    
    // Variables declaration - do not modify                     
    private javax.swing.JDesktopPane jDesktopPane1;
    private javax.swing.JInternalFrame jInternalFrame1;
    // End of variables declaration                   
    
}