--%>
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 : Describe Real number Real number : It

    Real number: It is a number with an integer and a fractional portion. The primitive types double and float are employed to symbolize real numbers.

    		•
  • Q : What is Abstract method Abstract method

    Abstract method: This is a method with the abstract reserved word in its header. The abstract method has no method body. Methods stated in an interface are for all time abstract. The body of an abstract method should be stated in a su

    		•
  • Q : What is Public interface Public

    Public interface: The members of a class prefixed with public access modifier. All these members are visible to each and every class in a program.

    		•
  • Q : What is session What is meant by the

    What is meant by the session?

    		•
  • Q : Explain the term Web Services

    Explain the term Web Services Description Language.

    		•
  • Q : Explain Copy constructor Copy

    Copy constructor: It is a constructor which takes a single argument of similar class. For illustration:     public class Point {        

    		•
  • Q : Define the need of process relative

    Define the need of process relative handles.

    		•
  • Q : What is an Initializer Initializer : A

    Initializer: A block stated at the outermost level of a class - identical to a method devoid of a header. The initializer blocks are executed, in order, whenever an instance is formed. They are executed prior to the constructor of the defining class,

    		•
  • Q : Explain Structured programming

    Structured programming: It is a style of programming generally related with languages like FORTRAN, C, Pascal and so forth. Employing structured programming methods, a problem is frequently resolved employing a divide and conquer approach like stepwis

    		•
  • Q : Define Scope Scope : A language's scope

    Scope: A language's scope rules establish how broadly variables, methods and classes are visible in a class or program. The local variables contain a scope restricted to the block in which they are stated, for example. Private methods and variables co

    		•