// Fig. 23.8: MiscBitOps.java
// Using the bitwise AND, bitwise inclusive OR, bitwise
// exclusive OR, and bitwise complement operators.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class MiscBitOps extends JFrame {
   private JTextField input1, input2, bits1, bits2;
   private int val1, val2;

   public MiscBitOps()
   {
      super( "Bitwise operators" );

      JPanel inputPanel = new JPanel();
      inputPanel.setLayout( new GridLayout( 4, 2 ) );

      inputPanel.add( new JLabel( "Enter 2 ints" ) );
      inputPanel.add( new JLabel( "" ) );

      inputPanel.add( new JLabel( "Value 1" ) );
      input1 = new JTextField( 8 );
      inputPanel.add( input1 );

      inputPanel.add( new JLabel( "Value 2" ) );
      input2 = new JTextField( 8 );
      inputPanel.add( input2 );

      inputPanel.add( new JLabel( "Result" ) );
      final JTextField result = new JTextField( 8 );
      result.setEditable( false );
      inputPanel.add( result );

      JPanel bitsPanel = new JPanel();
      bitsPanel.setLayout( new GridLayout( 4, 1 ) );
      bitsPanel.add( new JLabel( "Bit representations" ) );

      bits1 = new JTextField( 33 );
      bits1.setEditable( false );
      bitsPanel.add( bits1 );

      bits2 = new JTextField( 33 );
      bits2.setEditable( false );
      bitsPanel.add( bits2 );

      final JTextField bits3 = new JTextField( 33 );
      bits3.setEditable( false );
      bitsPanel.add( bits3 );

      JPanel buttonPanel = new JPanel();
      JButton and = new JButton( "AND" );
      and.addActionListener(
         new ActionListener() {
            public void actionPerformed( ActionEvent e )
            {
               setFields();
               result.setText( Integer.toString( val1 &
                                                 val2 ) );
               bits3.setText( getBits( val1 & val2 ) );
            }
         }
      );
      buttonPanel.add( and );

      JButton inclusiveOr = new JButton( "Inclusive OR" );
      inclusiveOr.addActionListener(
         new ActionListener() {
            public void actionPerformed( ActionEvent e )
            {
               setFields();
               result.setText( Integer.toString( val1 |
                                                 val2 ) );
               bits3.setText( getBits( val1 | val2 ) );
            }
         }
      );
      buttonPanel.add( inclusiveOr );

      JButton exclusiveOr = new JButton( "Exclusive OR" );
      exclusiveOr.addActionListener(
         new ActionListener() {
            public void actionPerformed( ActionEvent e )
            {
               setFields();
               result.setText( Integer.toString( val1 ^
                                                 val2 ) );
               bits3.setText( getBits( val1 ^ val2 ) );
            }
         }
      );
      buttonPanel.add( exclusiveOr );
               
      JButton complement = new JButton( "Complement" );
      complement.addActionListener(
         new ActionListener() {
            public void actionPerformed( ActionEvent e )
            {
               input2.setText( "" );
               bits2.setText( "" );
               int val = Integer.parseInt( input1.getText() );
               result.setText( Integer.toString( ~val ) );
               bits1.setText( getBits( val ) );
               bits3.setText( getBits( ~val ) );
            }
         }
      );
      buttonPanel.add( complement );

      Container c = getContentPane();
      c.setLayout( new BorderLayout() );
      c.add( inputPanel, BorderLayout.WEST );
      c.add( bitsPanel, BorderLayout.EAST );
      c.add( buttonPanel, BorderLayout.SOUTH );

      setSize( 600, 150 );
      show();
   }

   private void setFields()
   {
      val1 = Integer.parseInt( input1.getText() );
      val2 = Integer.parseInt( input2.getText() );

      bits1.setText( getBits( val1 ) );
      bits2.setText( getBits( val2 ) );
   }

   private String getBits( int value )
   {
      int displayMask = 1 << 31;
      StringBuffer buf = new StringBuffer( 35 );

      for ( int c = 1; c <= 32; c++ ) {
         buf.append(
            ( value & displayMask ) == 0 ? '0' : '1' );
         value <<= 1;

         if ( c % 8 == 0 )
            buf.append( ' ' );
      }

      return buf.toString();
   }

   public static void main( String args[] )
   {
      MiscBitOps app = new MiscBitOps();
      app.addWindowListener(
         new WindowAdapter() {
            public void windowClosing( WindowEvent e )
            {
               System.exit( 0 );
            }
         }
      );
   }
}


/**************************************************************************
 * (C) Copyright 1999 by Deitel & Associates, Inc. and Prentice Hall.     *
 * All Rights Reserved.                                                   *
 *                                                                        *
 * DISCLAIMER: The authors and publisher of this book have used their     *
 * best efforts in preparing the book. These efforts include the          *
 * development, research, and testing of the theories and programs        *
 * to determine their effectiveness. The authors and publisher make       *
 * no warranty of any kind, expressed or implied, with regard to these    *
 * programs or to the documentation contained in these books. The authors *
 * and publisher shall not be liable in any event for incidental or       *
 * consequential damages in connection with, or arising out of, the       *
 * furnishing, performance, or use of these programs.                     *
 *************************************************************************/