--%>
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 : ArrayLists I. The Assignment The

    I. The Assignment The Bashemin Parking Garage contains a single lane that can hold up to ten cars.  Arriving cars enter the garage at the rear and are parked in the empty space nearest to the front.  Departing cars exit only from the front.  If a cu

    		•
  • 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 are the applications of testing

    What are the applications of testing life cycle?

    		•
  • Q : Define Null reference Null reference :

    Null reference: A value utilized to mean, `no object'. Employed whenever an object reference variable is not referring to the object.

    		•
  • Q : What is an Anonymous array Anonymous

    Anonymous array: It is an array formed without an identifier. The anonymous array is generally formed as an actual argument, for example:// generate an anonymous array of integers.    YearlyRainfall y2k = new YearlyRai

    		•
  • Q : What is Break statement Break statement

    Break statement: A statement employed to break out of a loop, switch statement or labeled block. In all situations, control continues with the statement instantly, subsequent to the containing block.

    		•
  • Q : What is Homogeneous collection

    Homogeneous collection: A group of objects with similar dynamic type. Arrays are the most general homogeneous collection objects.

    		•
  • Q : What is Virtual desktop Virtual desktop

    Virtual desktop: The name employed to explain a user's graphical working area in a window manager. The name arises in the early days of graphical user interfaces whenever it was thought that such would lead to `paperless offices'. This was anticipated

    		•
  • Q : Assembly condition codes What do you

    What do you mean by the term assembly condition codes?

    		•
  • Q : Create an applet of bounces in JAVA

    Create an applet that bounces a blue ball inside an applet using Thread.  The ball (diameter is 10) will start at position (0,0).  When the ball hits the edge of the applet, the ball should bounce off the edge at a randomly selected angle between 20 and 60 d

    		•