Question

I am implementing my own LinkedList. I’ve a class which calls MyLinkedLlist, inside MyLinkedList only size() and iterator() have been implemented. Besides I’ve one Abstract class where all my other necessary functions for LinkedList in. The abstract class prototype is:

public abstract class MyAbstractSequentialList implements List

I wonder if I need to implement equals() method inside my abstract class or it is already implemented for me because of I inherit List?

Answer 1

List is an interface. So, there won’t be any default implementation. You can choose to implement one if you need. Note that if you override equals, you must override hashcode as well.