Demonstrating the logical operators in Java

import javax.swing.*;

public class LogicalOperators
     {
     public static void main( String args[] )
         {
         JTextArea outputArea = new JTextArea( 17, 20 );
         JScrollPane scroller = new JScrollPane( outputArea );
         String output = "";
        
         output  = "Logical AND (&&)"  
         "\nfalse && false: "   ( false && false )  
         "\nfalse && true: "   ( false && true )  
         "\ntrue && false: "   ( true && false )  
         "\ntrue && true: "   ( true && true );
        
         output  = "\n\nLogical OR (||)"  
         "\nfalse || false: "   ( false || false )  
         "\nfalse || true: "   ( false || true )  
         "\ntrue || false: "   ( true || false )  
         "\ntrue || true: "   ( true || true );
        
         output  = "\n\nBoolean logical AND (&)"  
         "\nfalse & false: "   ( false & false )  
         "\nfalse & true: "   ( false & true )  
         "\ntrue & false: "   ( true & false )  
         "\ntrue & true: "   ( true & true );
        
         output  = "\n\nBoolean logical inclusive OR (|)"  
         "\nfalse | false: "   ( false | false )  
         "\nfalse | true: "   ( false | true )  
         "\ntrue | false: "   ( true | false )  
         "\ntrue | true: "   ( true | true );
        
         output  = "\n\nBoolean logical exclusive OR (^)"  
         "\nfalse ^ false: "   ( false ^ false )  
         "\nfalse ^ true: "   ( false ^ true )  
         "\ntrue ^ false: "   ( true ^ false )  
         "\ntrue ^ true: "   ( true ^ true );
        
         output  = "\n\nLogical NOT (!)"  
         "\n!false: "   ( !false )  
         "\n!true: "   ( !true );
        
         outputArea.setText( output );
         JOptionPane.showMessageDialog( null, scroller, "Truth Tables", JOptionPane.INFORMATION_MESSAGE );
         System.exit( 0 );
     }
}