Java ArrayList set() method is used to replace an existing element present in the ArrayList at the specified position with the new given element. The… [Read More]

The trimToSize() method of ArrayList class is used for memory optimization. It trims the capacity of ArrayList to the current list size. This method is… [Read More]

In this guide, you will learn how to remove a specified element from an ArrayList using remove() method. The method remove(Object obj) removes the first… [Read More]

Method remove(int index) is used for removing an element of the specified index from a list. It removes an element and returns the same. It… [Read More]

The method lastIndexOf(Object obj) returns the index of last occurrence of the specified element in the ArrayList. It returns -1 if the specified element does… [Read More]

The isEmpty() method of java.util.ArrayList class is used to check whether the list is empty or not. This method returns a boolean value. It returns true if… [Read More]

ArrayList internally implements growable dynamic array which means it can increase and decrease its size automatically. If we try to add an element to a… [Read More]

Java.util.ArrayList class method indexOf(Object o) is used to find out the index of a particular element in a list. Method indexOf() Signature public int indexOf(Object… [Read More]