--%>
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 : Calculating Tax on an Order in SQL

    Process the following steps to make a procedure to compute the tax on an order. The BB_TAX table includes the states which need taxes to be submitted for Internet sales. When the state is not listed in the table, then no tax must be accessed on any order. Shopper&rsqu

    		•
  • Q : Define Single line comment Single line

    Single line comment: A comment is in the form:     // this line will be avoided by the compiler.

    		•
  • Q : Explain One Dimensional array One

    One Dimensional array:1) An array is a continuous memory location having similar kind of data in a single row or single column. Declaration in c++ is as under: const int size = 20;int a[size] or int a[2

    		•
  • Q : Define Class scope Class scope :

    Class scope: Private variables stated outside the methods in a class contain class scope. They are available from all methods within a class, in spite of the order in which they are stated. The private methods too contain class scope. Variables and me

    		•
  • Q : Define Java Archive file Java Archive

    Java Archive file: It is a Java Archive (JAR) file which makes it possible to store multiple bytecode files within a single file.

    		•
  • Q : State Null character State Null

    State Null character: The \u0000 character. The care must be taken not to confuse this with null reference.

    		•
  • Q : Maximum clock frequency of the circuit

    What do you mean by the term set up time and hold time constraints? Explain what do they mean? Which one is vital for estimating the maximum clock frequency of the circuit?

    		•
  • Q : What is Static initializer Static

    Static initializer: An initializer prefixed with ‘static’ reserved word. The static initializer is stated outside the methods of its enclosing class, and might access only the static fields and methods of its enclosing class.

    		•
  • Q : Define the term XML Define the term XML?

    Define the term XML?

    		•
  • Q : Security Manager on Applets Write down

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

    		•