Inner and Nested Classes: Anonymous 2

/**
 *  This code is edited from the book:
 *
 *  Winder, R and Roberts, G (1998)
 *  Developing Java Software
 *  John Wiley & Sons.
 *
 *  It is copyright (c) 1997 Russel Winder and 
 *  Graham Roberts.
 */

interface Thing
{
  void test(final String s);
}

class Subclass
{
  public void doSomething()
  {
    System.out.println("Doing Something");
  }
}

class Class10
{
  // Return an object created using an anonymous class
  // implementing an interface
  public Thing i1()
  {
    Thing t = new Thing ()
      {
        public void test(final String s)
        {
          System.out.println(s);
        }
      }; // Note the semi-colon here
    return t;
  }

  // Version that eliminates local variable
	// implementing an interface
  public Thing i2()
  {
    return new Thing ()
      {
        public void test(final String s)
        {
          System.out.println(s);
        }
      }; // Note the semi-colon here
  }

  // Return an object created using an anonymous class
  // subclassing a class
  public Subclass f1()
  {
    Subclass t = new Subclass()
      {
        public void doSomething()
        {
          something();
        }

        private void something()
        {
          System.out.println(name);
        }

        String name = "Anonymous 1";
      };
    return t;
  }

  // Version that eliminates local variable
	// subclassing a class
  public Subclass f2()
  {
    return new Subclass()
      {
        public void doSomething()
        {
          something();
        }

        private void something()
        {
          System.out.println(name);
        }

        String name = "Anonymous 2";
      };
  }

  public static void main(String[] args)
  {
    Class10 c10 = new Class10();
    Thing t1 = c10.i1();
    t1.test("hello");

    Thing t2 = c10.i2();
    t2.test("world");

    Subclass t3 = c10.f1();
    t3.doSomething();

    Subclass t4 = c10.f2();
    t4.doSomething();
  }
}
/******** sample compilation & run *******
# javac l1Anon2.java 
# java l1Anon2      
hello
world
Anonymous 1
Anonymous 2
# 
******************************************/