// Lang_09 [creating classes].nova


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

      // Call the "method1" instance method of the first object.
      first.method1( );
   }
}



class First
{
   // Declare an instance attribute.
   private Second second;


   // Constructor method.
   public First( )
   {
      Stream.writeLine( "Constructor 'First( )' called" );

      // Initialize the instance attribute.
      second = new Second( );  // Create an instance of the second class.
   }


   // Instance method (not static).
   public void method1( )
   {
      Stream.writeLine( "First.method1( ) called" );

      // Call a method of the "Second" class.
      second.method1( );
   }
}



class Second
{
   // Constructor method.
   public Second( )
   {
      Stream.writeLine( "Constructor 'Second( )' called" );
   }


   // Instance method (not static).
   public void method1( )
   {
      Stream.writeLine( "Second.method1( ) called" );
   }
}