🚀 go-pugleaf

Hi,

I am trying to use a JInternalFrame in an applet that extends JApplet. I
am using JBuilder c/s.

I created a JInternalFrame

  JInternalFrame jInternalFrame_login = new
JInternalFrame("test",true,true,true,true);

and add it to a JPanel, which is added to this. No code is added
manually ( except extending of  JApplet).


Then I test it in AppletViewer. The frame is displayed there and looks
fine. But when I click the icon on the top of the frame, the frame
doesnt response. It cannot be maximumized  and closed. It can be
"iconized", disappeared,  I have to resize the AppletViewer pane to find
the iconized frame.

The error message is,  java.lang.NullPointerException.

Is there anybody could help me with this problem? Thanks.





wu