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subList() method is used to get a portion of the ArrayList and in this post, we are going to discuss the subList() method in detail. Method declaration – public List<E> subList(int fromIndex, int toIndex) What does it do? It will take two arguments – fromIndex and toIndex. fromIndex ( inclusive ) is the index from

The size() method is used to know about the size of the ArrayList and in this post, we are going to look at the size() method in detail. Method declaration – public int size() What does it do? It will tell the number of elements present in the ArrayList What does it return? It will

The set() method of the ArrayList class is used to set a particular element at the specified position. In this post, we are going to look at the set() method in detail. Method declaration – public E set(int index, E element) What does it do? It will help in replacing the element present at the

This post will discuss the contains() and containsAll() methods implemented in the ArrayList class. They are used to check whether an ArrayList contains a specified element/Collection or not. public boolean contains(Object o) public boolean containsAll(Collection c) Let’s discuss them one by one. public boolean contains(Object o) What does it do? It will check whether the

This post will discuss the removeAll() method of the ArrayList class in Java. removeAll() method removes all of the elements in the specified collection. We can remove only one element from the list using the remove() method. Method declaration – public boolean removeAll(Collection c) What does it do? It will remove all elements present in

The remove() method of the ArrayList class helps remove the specified element or element present at a specified index. There are two overloaded implementations of the remove() method. public E remove(int index) public boolean remove(Object o) Let’s have a look at these methods one by one. public E remove(int index) What does it do? It

The lastIndexOf() method helps find the last occurrence of a specified element within the ArrayList. This post will discuss the lastIndexOf() of the ArrayList class in detail. We also have an indexOf() method in the ArrayList class, which is used to find the first occurrence of an element. Method declaration – public int lastIndexOf(Object o)