Chapter 11.5, Problem 11.5.6CP

Explanation of Solution

@Override annotation:

• In Java, “@Override” annotation is a default java annotation. This is a sign of telling to complier that the user trying to override a superclass method.

Benefit of @Override annotation:

• The compile time error will occur when the programmer makes any mistakes like incorrect method name, signatures while overriding. By using this annotation, the programmer instructs the compiler that programmer is overriding this method. If the programmer doesn’t use the “@Override” annotation, then the method in sub class would behave as a new class, not overriding method.
• The “@Override” will improve the code readability. So if the programmer changes the overridden method signature, then all the sub classes that override the particular method would throw a compiler error. If the programmer has lots of classes, then this annotation should really help the programmer to find out the classes that need changes when they change the method signature.

Example:

Consider the example of @Override method which is given below:

//definition of "Employee" class

class Employee

{

    //definition of function

    public void statement()

    {

        //print the statement

        System.out.println("Hai");

    }

}

//definition of "Manager" class

class Manager extends Employee

{

    @Override

    //definition of function

    public void statement()

    {

        //print the statement

        System...