--%>
Assignment Help - homework help

Method over ridding in java

Q. Explain method over ridding in java. Give example.              

Ans. Method over ridding: In a class hierarchy, when a method in a subclass has the same name and type signature as a method in its subclass then the method in the subclass in said to over ride the method in the super class. When an over ridden method is called from with a subclass it will always refer to the version of tat method defined the subclass. The version of the technique defined by the super class will be unseen. When show () is invoked on the object of type B, the version of show () defined in B is utilized. This is the version of show () inside B over riddles the version declared in A. If you want to access the super class version of an over ridden method function, you can do so by using super class. For example, in the version of B, the super class version is show () is invoked within the subclass version. This permits all instance variables to be exhibited.

Class B extends A

{  int K;

B { int a, int b, int c)

{  super (a, b)

K = c;

}

}

Method over ridding occurs only when the names and the types signature of the two methods are identical. If they are not then the two methods are simply over loaded. 

   Related Questions in Programming Languages

  • Q : Explain the good illustrations of

    Explain the good illustrations of closing XHTML elements.

    		•
  • Q : Explain Exclusive-or operator

    Exclusive-or operator: An exclusive-or operator (^) is both a Boolean operator and the bit manipulation operator. The Boolean version provides the value true when only one of its operands is true; or else it offers the value false. Likewise, the bit m

    		•
  • Q : Define Identifiers Define Identifiers

    Define Identifiers and their naming convention in brief?

    		•
  • Q : Differentiate overriding and

    Differentiate overriding and overloading method?

    		•
  • Q : What is an Overriding for chaining

    Overriding for chaining: It is a form of method overriding in which the sub-class version of a method verifies to see whether it can react to the message on its own and just calls the super-class version of the method.

    		•
  • Q : Security Manager on Applets Write down

    Write down some of the restrictions imposed by using a Security Manager on Applets?

    		•
  • Q : Automaton distributed in the class

    Write a code in a c++/java  for the automaton distributed in the class which accepts keywords(cat,bat,cab). Create an input file with these words may be two or three copies of these words scattered in a paragraph and show that your program does accept these words and gives an output to that

    		•
  • Q : What is an Object Object : It is an

    Object: It is an instance of a particular class. In common, any number of objects might be constructed from a class definition. The class to which an object belongs states the common characteristics of all instances of that class. In those characteris

    		•
  • Q : Explain Downcast with example Explain

    Explain Downcast with example: It is a cast towards an object's dynamic kind - that is, `down' the inheritance hierarchy. For illustration:        // Downcast from Object to String

    		•
  • Q : What is Behavior Behavior : It is the

    Behavior: It is the methods of a class which implement its behavior. A particular object's behavior is a mixture of the method definitions of its class and the present state of the object.

    		•