Assignemnt #40 and A Frame with a Panel with Writing on It

Code

    ///Name: Luke Shin
    ///Period: 7
    ///Project Name: Prog613
    ///File Name: Prog613.java
    ///Date: 11/09/2015
    
    import javax.swing.*;
    import java.awt.*;
    
    public class Prog613
    {
        public static void main(String[] args)
        {
            Frame613 f = new Frame613();
            f.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
            f.setVisible(true);
        }
    }
    
    class Frame613 extends JFrame{
        public Frame613(){
            setTitle("DAYUM!");
            setSize(300, 200);
            setLocation(100, 200);
            
            Panel613 panel = new Panel613();
            Container cp = getContentPane();
            cp.add(panel);
        }
    }
    
    class Panel613 extends JPanel{
        public void paintComponent( Graphics g )
        {
            super.paintComponent(g);
            g.drawString("hi", 75, 100);
        }
    }
    

Picture of the output