Images with JTabbed Pane

the panels that i am using in JtabbedPane load images in background at run time when i seperately run them images are loaded but when the panels are used in tabed pane images are not visible

I have overriden the function . what i am using for my panels is the Image panel which is derived from panel class and i create an instance of that image panel on my panel that is to be added on jtabbed control but it is not showing

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