trimToSize() method is used for memory optimization. It trims the capacity of ArrayList to the current list size. For e.g. An arraylist is having capacity… [Read More]

The method remove(Object obj) removes the specified object from the list. It belongs to the java.util.ArrayList class. public boolean remove(Object obj) Note: It returns false… [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]

isEmpty() method of java.util.ArrayList class is used for checking whether the list is empty or not. This method returns a boolean value. public boolean isEmpty()… [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]

ArrayList get(int index) method is used for fetching an element from the list. We need to specify the index while calling get method and it… [Read More]

ArrayList contains() method is used for checking the specified element existence in the given list. public boolean contains(Object element) It returns true if the specified… [Read More]

In the last tutorial we have shared the example of addAll(Collection c) method which is used for adding all the elements of Collection c at the… [Read More]

In this tutorial we will see the usage of addAll() method of java.util.ArrayList class. This method is used for adding all the elements of a… [Read More]

Simple add() method is used for adding an element at the end of the list however there is another variant of add method which is… [Read More]

The add() method of Java ArrayList class is used to add elements to an ArrayList. In this guide, we will see various examples of add… [Read More]

In this tutorial we will learn how to compare two ArrayList. We would be using contains() method for comparing two elements of different ArrayList. public… [Read More]

When we are dealing with ArrayList of Objects then it is must to Override the toString() method in order to get the output in desired… [Read More]