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Okay, this is a tricky one. I tried to rebuild the shelf's by simply calling:


private void addComponents() {
JPanel shelfs = buildShelfs();
this.add(shelfs);
}


And this as far as i...

It goes back to the function i call:


public void repaintWindow() {
this.getContentPane().validate();
this.getContentPane().repaint();
}


I'm not sure if i can call the repaint. I...

Errors you say:


Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at project.MediaHandler.addMovie(MediaHandler.java:19)
at...

Hi, as the topic follows im trying to repaint a window from another class. the class Window handles an interface that displays pictures of movies. Via a JMenuBar you can add a new movie and its...