Using paintComponent() to draw rectangle in JFrame

Question

I\'m trying to create a program that draws shapes (a rectangle on the example below) using JPanel\'s paintComponent(), but I can\'t get it to work and can\'t spot what is wr

Answer 1

you're never actually adding the panel to the frame, so it is never visible. you need something like

frame.getContentPane().add( panel );

why are you defining the drawpanel class inside the main method? that's rather odd.