Lab Objective: In this lab, we will demonstrate how to declare and initialize ArrayList, and how to manipulate ArrayList using built-in methods. By the end of this lab, learners will be able to use ...

Find and fix vulnerabilities Codespaces. Instant dev environments ...

Object clone(): This method returns a copy of ArrayList. int indexOf(Object obj): This method returns -1 if the list that invoked the method does not return the specified element else it will return ...

Polymorphism in method overriding. It’s possible to change the return type of an overridden method if it is a covariant type. A covariant type is essentially a subclass of the return type. Here ...

In this blog we will learn how to iterate over the elements of a collection (here we considered arraylist) using generics and without generics.first we will go through the process of using iterator ...