Swing objects and when they are loaded

[Chrissirhc]

I have another problem. When you create a JPanel and say you add JComponents to it. How do you know when the JComponent is loaded?. I have added JComponents to A JPanel and then I call remove(2) on this JPanel. I know that there is JComponent in this position as I have added six. However this doesn't help because I get null pointer exception as the JComponent isn't loaded yet. When you add a JComponent to a JPanel is there a way to wait until its there before doing anything else?.

Chris

PS I also have this problem in returning the dimensions of an object.