some kind hearted gentleman or lady, i humbly request you to please help me on this assignment

i am posting the code i have written below, it is supposed to draw a
line on the JInternalframe and also add an origin point.

but i don't see the line or point when i run it. the code compiles and
runs perfectly fine.

some kind hearted gentleman or lady, please help me debug it. my email
id is sundar.b.mani@gmail.com plz send a note to that id as well.

kind regards,
Sundar

package testapp;

import javax.swing.*;
import java.awt.Rectangle;
import java.awt.geom.Point2D;
import java.awt.geom.Point2D.Double;
import java.awt.Graphics;
import java.awt.Color;
import java.awt.Font;
import java.lang.*;
import java.lang.Integer;

public class TestApp extends javax.swing.JFrame
{

   /** Creates new form TestApp */
   public TestApp()
   {
       initComponents();
   }

   private void initComponents()//GEN-BEGIN:initComponents
   {
       //cenPanel = new javax.swing.JPanel();
       //cenPanel.setLayout(new java.awt.BorderLayout());
       //getContentPane().add(cenPanel, java.awt.BorderLayout.CENTER);
       desktop = new JDesktopPane();
       desktop.setLayout(new java.awt.BorderLayout());
       getContentPane().add(desktop, java.awt.BorderLayout.CENTER);
       jMenuBar1 = new javax.swing.JMenuBar();
       fileMenu = new javax.swing.JMenu();
       newFile = new javax.swing.JMenuItem();

       DrawMenu = new javax.swing.JMenu();
       Line = new javax.swing.JMenuItem();

 
setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
       addWindowListener(new java.awt.event.WindowAdapter()
       {
           public void windowClosing(java.awt.event.WindowEvent evt)
           {
               exitForm(evt);
           }
       });

       fileMenu.setText("File");
       DrawMenu.setText("Draw");
       newFile.setText("New");
       newFile.addActionListener(new java.awt.event.ActionListener()
       {
           public void actionPerformed(java.awt.event.ActionEvent evt)
           {
               newFileActionPerformed(evt);
           }
       });
       jMenuBar1.add(fileMenu);
       jMenuBar1.add(DrawMenu);
       setJMenuBar(jMenuBar1);

       fileMenu.add(newFile);
       DrawMenu.add(Line);

       java.awt.Dimension screenSize =
java.awt.Toolkit.getDefaultToolkit().getScreenSize();
       setBounds((screenSize.width-400)/2, (screenSize.height-300)/2,
400, 300);
   }

   private void newFileActionPerformed(java.awt.event.ActionEvent evt)
   {

           iframe = new JInternalFrame("Image Animator", true, true,
true, true);
           desktop.add(iframe, java.awt.BorderLayout.CENTER);
           //cenPanel.add(iframe, java.awt.BorderLayout.CENTER);
           Rectangle Rect = new Rectangle();

           Rect = iframe.getNormalBounds();
           int X_ULC = Rect.x;
           int Y_ULC = Rect.y;
           int Y_LLC = Y_ULC - Rect.height;

           Point2D.Double Origin = new Point2D.Double(X_ULC +
0.05*Rect.width, Y_LLC + 0.05*Rect.height);

           String OrigintoString = Origin.toString();
           Graphics Gr = iframe.getGraphics();
           Color C = new Color(255,255,255);
           Gr.setColor(C);
           int FrameWidth = Rect.width;
           int FrameHeight = iframe.getHeight();
           Integer intFW = new Integer(FrameWidth);
           Integer intFH = new Integer(FrameHeight);
           String widthinString = intFW.toString(FrameWidth);
           String heightinString = intFH.toString(FrameHeight);
           Gr.drawString(widthinString,X_ULC,Y_ULC);
           Gr.drawString(OrigintoString, (int)Origin.getX(),
(int)Origin.getY());
           Gr.drawLine(X_ULC,Y_ULC,X_ULC+Rect.width,Y_ULC-
Rect.height);
           iframe.setVisible(true);
   }

   private void exitForm(java.awt.event.WindowEvent evt)
   {
       System.exit(0);
   }

   public static void main(String args[])
   {
       TestApp TA = new TestApp();
       TA.setVisible(true);
   }

   private JInternalFrame iframe ;
   //private javax.swing.JPanel cenPanel;
   private javax.swing.JMenuBar jMenuBar1;
   private JDesktopPane desktop;
   private javax.swing.JMenu fileMenu;
   private javax.swing.JMenuItem newFile;
   private javax.swing.JMenu DrawMenu;
   private javax.swing.JMenuItem Line;

}