// Name:     Bradley Shedd
// Program:  Project#4ExtraCredit
// Date:     November 16, 2010
// Class:    Java1302
// Filename: PalindromeClient.java
// Purpose:  This class checks for a palindrome by user input.
//           It ignores capital letters in the user input.

   import javax.swing.JOptionPane;
   import javax.swing.JFrame;
   import java.awt.Graphics;

   public class PalindromeClient extends JFrame
   {
      private Palindrome palind;
      boolean started = false;
  
      public PalindromeClient( )
      {
         palind = new Palindrome( );
         setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
         setSize( 570, 400 );
         setVisible( true );
      }
  
      public Palindrome getPalindrome( )
      {
         return palind;
      }
  
      public void setStarted( boolean b )
      {
         started = b;
      }
  
      public boolean recursivePalindrome( String pal )
      {
      // ***** Student writes the body of this method *****
     
      // Using recursion, determine if a String representing
      // a word or a sentence is a palindrome
      // If it is, return true, otherwise return false
     
      // We call the method animate inside the body of this method
      // The call to animate is already coded below
     
         animate( pal );
     
         if (pal.length() <= 1)
            return true;
         else
            return pal.substring(0, 1).equalsIgnoreCase(pal.substring(pal.length() -1))
               && recursivePalindrome( pal.substring(1,pal.length() -1));
     
      }
  
      public void animate( String pal )
      {
         palind.updatePalindrome( pal );
         palind.setStarted( true );
         started = true;
         repaint( );
         try
         {
            Thread.sleep( 1000 );      // wait for the animation to finish
         }
            catch ( Exception e )
            {
            }
      }
  
      public void paint( Graphics g )
      {
         if ( started )
         {
            super.paint( g );
            palind.draw( g );
         }
      }
  
      public String getPalString( )
      {
         boolean goodInput = false;
         String palString = "";
      // palString is limited to 26 characters
         while( !goodInput )
         {
            try
            {
               palString = JOptionPane.showInputDialog( null, "Enter a word or phrase between 1 and 26 characters long" );
               if ( palString != null )
               {
                  if ( palString.length( ) <= 26 && palString.length( ) >= 1 )
                     goodInput = true;
               }
               else
               {
                  System.exit( 0 );
               }
            }
               catch( Exception e )
               { }
         }
         return palString;
      }
  
      public static void main( String [] args )
      {
         PalindromeClient app = new PalindromeClient( );
      // ask user for input
         boolean result = false;
     
      // the program will loop until the user clicks on "Cancel"
         while( true )
         {
            String appPal = app.getPalString( );
            ( app.getPalindrome( ) ).setPalString( appPal );
            app.setStarted( true );
         // start
            result = app.recursivePalindrome( ( app.getPalindrome( ) ).getPalString( ) );
         // finish last step in animation
            ( app.getPalindrome( ) ).setResult( result );
            app.repaint( );
           System.out.println( "The correct result is " + ( app.getPalindrome( ) ).getExactResult( ) );
            System.out.println( "Your result is " + result );
            System.out.println( "Done\n" );
            System.out.println("Coded By: Bradley J. Shedd");
        // done
            JOptionPane.showMessageDialog( null, "Done" );
            System.out.println("Coded By: Bradley J. Shedd");
         }
      }
   }

Homepage