// Fig. 5.7: SwitchTest.java
// Drawing lines, rectangles or ovals based on user input.
import java.awt.Graphics;

import javax.swing.*;

public class SwitchTest extends JApplet {
   int choice;  // user's choice of which shape to draw

   // initialize applet by obtaining user's choice
   public void init()
   {
      String input;  // user's input

      // obtain user's choice
      input = JOptionPane.showInputDialog( 
         "Enter 1 to draw lines\n" +
         "Enter 2 to draw rectangles\n" +
         "Enter 3 to draw ovals\n" );

      choice = Integer.parseInt( input );  // convert input to int

   } // end method init

   // draw shapes on applet's background
   public void paint( Graphics g )
   {
      super.paint( g );  // call paint method inherited from JApplet

      for ( int i = 0; i < 10; i++ ) {  // loop 10 times (0-9)

         switch ( choice ) {  // determine shape to draw 

            case 1:  // draw a line
               g.drawLine( 10, 10, 250, 10 + i * 10 );
               break;  // done processing case

            case 2:  // draw a rectangle
               g.drawRect( 10 + i * 10, 10 + i * 10,
                  50 + i * 10, 50 + i * 10 );
               break;  // done processing case

            case 3:  // draw an oval
               g.drawOval( 10 + i * 10, 10 + i * 10,
                  50 + i * 10, 50 + i * 10 );
               break;  // done processing case

            default: // draw string indicating invalid value entered
               g.drawString( "Invalid value entered", 
                  10, 20 + i * 15 );

         } // end switch 

      } // end for 

   } // end method paint

} // end class SwitchTest

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 * (C) Copyright 1992-2003 by Deitel & Associates, Inc. and               *
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