Assignment #43 and A Frame with a Panel with Writing on It

Code

                            /// Name: Graham Pollock
                            /// Period: 5
                            /// Program Name: Prog613
                            /// File Name: Prog613.java
                            /// Date Finished: 11/02/2015/
    import javax.swing.*;
    import java.awt.*;
    
    public class Prog613
    {
        public static void main( String[] agrs )
        {
            Frame613 f = new Frame613();
            f.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
            f.setVisible(true);
        }
    }
    
    class Frame613 extends JFrame
    {
        public Frame613()
        {
            setTitle("613 rocks!");
            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