Hi Kay,
First, since you are using Swing
you should not be overriding paint instead you should be overriding paintComponent. See the quote from Sun below.
Note: Don't override or invoke the method that calls the paintXxx methods: the paint method. Although overriding paint was legitimate in pre-Swing components, it's generally not a good thing to do in components that descend from JComponent. Unless you're careful, overriding paint would likely confuse the painting system, which relies on the JComponent implementation of the paint method for correct painting, performance enhancements, and features such as double buffering.
Second, you will need to call super.paintComponent in order for things to be drawn correctly (i.e., other components appearing above your picture).
Regards,
Manfred.