// Lang_22 [method references (instance)].nova


// The application class.
class MethodReferencesInstanceApp
{
   // Application class's "main" function.
   public static void main( String[] args )
   {
      // Create an instance of the example class.
      ExampleClass e = new ExampleClass( );

      // Declare an instance method reference.
      String ( ExampleClass )( ) methodRef = ExampleClass.add;

      // Declare and initialize a generic method reference primitive.
      method m = methodRef;

      // Set the values of the example class's data members.
      e.x = 12;
      e.y = 3;

      // Call the instance method reference.
      Stream.writeLine( e.( methodRef )( ) );

      // Declare an instance method reference.
      String ( Integer )( ) methodRef2 = Integer.toString;

      // Assign to a generic method reference primitive.
      m = methodRef2;

      // Call the instance method reference.
      Stream.writeLine( ( new Integer( e.x * e.y ) ).( methodRef2 )( ) );
   }
}


// Example class with a static subtraction method.
class ExampleClass
{
   // Instance attributes.
   public int x;
   public int y;


   // Default constructor.
   public ExampleClass( )
   {
      x = 100;
      y = 25;

      // Declare an instance method reference.
      String ( ExampleClass )( ) methodRef = add;

      // Call the instance method reference.
      Stream.writeLine( methodRef( ) );
   }


   // Instance method to add two Integers and return a String result.
   public String add( )
   {
      Stream.writeLine( "instance method \"add\" called." );

      return Integer.toString( x + y );
   }
}