Java JFrame background color not working

Question

I tried using:

frame1.getContentPane().setBackground(Color.yellow);

But it is not working. Can anyone help me?

import java.         


        

Answer 1

I know this is a very old question, but for others that are looking for the right answer this could also be written as following:

frame1.getContentPane().setBackground(new Color (255,255,102)); //or whatever color you want in the RGB range