//  InstanceofOperatorTests.java  Copyright (c) 2005 Kari Laitinen

//  http://www.naturalprogramming.com

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

//  Testing operator instanceof

import java.util.* ;

class  TestClass  implements Cloneable
{
   static int  object_counter  =  0 ;

   int object_number ;

   public TestClass()
   {
      object_counter  ++  ;
      object_number  =  object_counter ;
   }

   public void make_speak()
   {
      System.out.print( "\n Hi! I'm object number "  +  object_number ) ;
   }
}

class DerivedClass extends TestClass
{
}

class InstanceofOperatorTests
{

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

      TestClass  some_test_object  =  new  TestClass() ;

      DerivedClass some_derived_class_object  =  new  DerivedClass() ;

      System.out.print(

            "\n  some_test_object instanceof Testclass   returns          "  
          +  ( some_test_object instanceof TestClass )
          + "\n  some_derived_class_object instanceof TestClass  returns  "  
          +  ( some_derived_class_object instanceof TestClass )
          + "\n  some_test_object instanceof DerivedClass  returns        "  
          +  ( some_test_object instanceof DerivedClass )
          + "\n  some_test_object instanceof Cloneable     returns        "  
          +  ( some_test_object instanceof Cloneable )
          + "\n  some_test_object instanceof Comparable    returns        "  
          +  ( some_test_object instanceof Comparable )

         ) ;


   }
}