שפת Java - חלק ראשון

class Base

{

      Base(){}

      Base(int i) {}

      protected void foo() {…}

}

class Derived extends Base

{

      Derived() {}

      protected void foo() {…}

      Derived(int i)

      {

            super(i);

            …

            super.foo();

      }

}

class Base

{

      void foo()

      {

            System.out.println(“Base”);

      }

}

class Derived extends Base

{

      void foo()

      {

            System.out.println(“Derived”);

      }

}

public class Test

{

      public static void main(String[] args)

      {

            Base b = new Derived();

          b.foo();  // Derived.foo() will be activated

      }

}