//  IntegerClassTests.java  (c) 2005 Kari Laitinen

//  http://www.naturalprogramming.com

//  2005-05-16  File created.
//  2005-05-22  Last modification.

//  This program tests the Integer class which is one of the
//  standard wrapper classes of Java.

//  The "bitwise" Integer methods are tested in program
//  BinaryWithWrappedInt.java.

import java.util.* ;

class IntegerClassTests
{
   public static void main( String[] not_in_use )
   {
      Scanner  keyboard  =  new Scanner( System.in ) ;

      int      some_int_variable  =  77 ;
      Integer  some_integer_object  =  new Integer( some_int_variable ) ;

      int      another_int_variable  =  88 ;
      Integer  another_integer_object  =  another_int_variable ;
      Integer  third_integer_object  =  99 ;

      Object   object_to_print  =  third_integer_object ;

      System.out.print( "\n  "  +  object_to_print  +  "\n  " ) ;

      some_integer_object  =  another_integer_object  +
                              third_integer_object ;

      System.out.print( some_integer_object ) ;      

      int  result_as_int_variable  =  another_integer_object  +
                                      third_integer_object    +  4000 ;

      System.out.print( "\n  "  +  result_as_int_variable   +  "\n") ;      

      System.out.print( "\n Integer.MAX_VALUE is "  +  Integer.MAX_VALUE ) ;
      System.out.print( "\n Integer.MIN_VALUE is "  +  Integer.MIN_VALUE ) ;
      System.out.print( "\n Integer.TYPE is "  +  Integer.TYPE  +  "\n" ) ;


      //  "11" is interpreted below as decimal, hexadecimal, and binary string.

      System.out.print( "\n  "  +  Integer.parseInt( "11" ) ) ;
      System.out.print( "\n  "  +  Integer.parseInt( "11", 16 ) ) ;
      System.out.print( "\n  "  +  Integer.parseInt( "11",  2 ) ) ;

      //  The value of some_int_variable is printed in decimal, hexadecimal
      //  and binary form.

      System.out.print( "\n\n  "  +  Integer.toString( some_int_variable )
                     +  "    "  +  Integer.toHexString( some_int_variable ) 
                     +  "    "  +  Integer.toBinaryString( some_int_variable ));

      //  The same is done again with the toString() methods.

      System.out.print( "\n\n  "  +  Integer.toString( some_int_variable )
                     +  "    "  +  Integer.toString( some_int_variable, 16 ) 
                     +  "    "  +  Integer.toString( some_int_variable, 2 ));

 
      System.out.print( "\n  "  +  Integer.decode( "0x41" ) ) ;

   }
}