How to delete components ?

Hi there.. does anyone out there know how to delete a button. For example if you added a button to a JPanel and then if you right click on it then it dissapears.
Or lets say youi draw a line and you want to get rid of the line , how do you do this. Lets assume that you know the cordinates of the line. Does anyone know how to do this? thanks in advance

To remove an actual component you would have to call remove( button ) and then call validate(), both on the JPanel (or other container) that holds the button.

Since a line isn't a component, but can only be painted on a component, you'll have to handle that in whatever component is painting the line on itself...

-Nate