import java.awt.BorderLayout; import java.awt.Graphics; import javax.swing.JPanel; public class SmileyPanel extends JPanel{ public void paintComponent(Graphics g){ super.paintComponent(g); Smiley S=new Smiley(getWidth(),getHeight()); S.draw(g,0,0); } public static void main(String[] args){ DBFrame f=new DBFrame(300,300,new BorderLayout()); SmileyPanel SP=new SmileyPanel(); f.getContentPane().add(SP,"Center"); // f.pack(); f.setVisible(true); } }