--%>
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 Overriding for restriction

    Overriding for restriction: It is a form of method overriding in which the sub-class version of a method calls the super-class version first of all and then employs or manipulates the outcome or consequences of that call in some manner.

    		•
  • Q : What does XSLT processing models include

    What does extensible style sheet language transformations processing models involve?

    		•
  • Q : Define Function Function : The name

    Function: The name given to assembly of statements which does some particular task and might return a value. Function can be invoked (or called) any number of time and anywhere in the program.

    		•
  • Q : What is File Transfer Protocol or FTP

    File Transfer Protocol: The File Transfer Protocol (abbreviated as FTP) states a standard set of rules which make it probable to transfer a file from one file system to the other.

    		•
  • Q : State Precedence rules Precedence rules

    Precedence rules: The rules which determine the order of computation of an expression comprising more than one operator. The operators of higher precedence are computed before those of lower precedence. For example, in the expression x+y*z, the multip

    		•
  • Q : What are Relational operators

    Relational operators: Operators, like <, >, <=, >=, == and!=, which produce a Boolean outcome, as portion of a Boolean expression.

    		•
  • Q : What is Factory pattern Factory pattern

    Factory pattern: A pattern of class definition which is employed as a generator of instances of other classes. Frequently employed to form platform- or locale-particular implementations of abstract classes or interfaces. This decreases coupling betwee

    		•
  • Q : Define Multiple Inheritance Multiple

    Multiple Inheritance: In C++, multiple-inheritance occurs when a class inherits from more than one parent. For example: 524_mult</span></p> </div> <!-- /comment-box --> </li> </td> </tr><tr> <td> <li> <div class=

    Q : Explain Hot spot Hot spot : This is an

    Hot spot: This is an area in an image map with a specific significance. A program usually monitors movements of the mouse, and reacts according to the actions related with the hot spots over which it passes. This may comprise displaying various status

    		•
  • Q : Explain Look-and-feel Look-and-feel :

    Look-and-feel: The visual impression and interaction style given by a user interface. This is mainly the responsibility of the window manager (that is, in collaboration with the fundamental operating system) running on a specific computer. This refers

    		•