In this example we will learn how to add a entire collection to a Java ArrayList. we will follow the below steps.
- First step is that we need to create a new ArrayList.
- Populate the ArrayList al1 with elements, using add(E e) API method of ArrayList.
- Create a new ArrayList al2 and add elements to it using add(E e) method.
- Using addAll(Collection c) we will add all the elements of al2 to al1