Abstract class or methods example-1

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Abstract class or methods example-1
Posted on: June 30, 2010 at 12:00 AM

This example shows that a abstract class can hold abstract and non abstract methods.


package roseindia1;



// abstract class can hold non abstract method



abstract class Animal {

  void runAnimal() {

    System.out.println("runAnimal() method called form Animal class"); // this

    // statement will override by the subclass method runAnimal

  }



  void printAnimal() {

    System.out.println("printAnimal() method called form Animal class");

  }

}



class BuzzwordAnimal extends Animal {

  void printAnimal() {

    System.out.println("printAnimal() method called form BuzzwordAnimal class");

  }



  void runAnimal() {

    super.runAnimal(); 

    // super keyword helps to call method of superclass ie Animal

    printAnimal(); // this invoke the buzzwordAnimal class method

  }

}



class AbstractExample {

  public static void main(String[] args) {

    BuzzwordAnimal b = new BuzzwordAnimal();

    b.runAnimal(); // overriding will take place as it has similar method

    // name exits both is sub and superclass

  }

}



/*

 * --------------------OUTPUT--------------------                       

 * runAnimal() method called form Animal class printAnimal() method called form

 * BuzzwordAnimal class

 */

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