Name: aaC67449 Date: 05/21/99


The JDialog((Dialog)null) throws IllegalArgumentException, but should
use a value returned by SwingUtilities.getSharedOwnerFrame() enstead the null,
like the JDialog(Frame) does.

javadoc says: "
    /**
     * Returns a toolkit-private, shared, invisible Frame
     * to be the owner for JDialogs and JWindows created with
     * null owners.
     */
    static Frame getSharedOwnerFrame();
"

---------------- example ---------------
import javax.swing.*;
import java.awt.*;
public class Test {
 
   public static void main(String argv[]) {
       new JDialog((Dialog) null);
  }
 
}
-------------output---------
Exception in thread "main" java.lang.IllegalArgumentException: null owner window
        at java.awt.Window.ownedInit(Window.java, Compiled Code)
        at java.awt.Window.<init>(Window.java, Compiled Code)
        at java.awt.Dialog.<init>(Dialog.java, Compiled Code)
        at javax.swing.JDialog.<init>(JDialog.java, Compiled Code)
        at javax.swing.JDialog.<init>(JDialog.java, Compiled Code)
        at javax.swing.JDialog.<init>(JDialog.java, Compiled Code)
        at Test.main(Test.java, Compiled Code)

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