An ArrayList in Java represent a list of objects. We can add, remove, find, sort and replace elements in this list.
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
public class ArrayListExample
{
public static void main(String[] args)
{
ArrayList<Integer> digits = new ArrayList<>(Arrays.asList(1,2,3,4,5,6));
Iterator<Integer> iterator = digits.iterator();
while(iterator.hasNext()) {
System.out.println(iterator.next());
}
}
}
Program output.
1 2 3 4 5 6
This page lists down ArrayList examples posted on this blog.
1. ArrayList Methods
ArrayList add() method example
ArrayList addAll() method example
ArrayList clear() method example
ArrayList clone() – How to clone an ArrayList
ArrayList contains() method example
ArrayList ensureCapacity() method example
ArrayList forEach() method example
ArrayList get() method example
ArrayList indexOf() method example
ArrayList lastIndexOf() method example
ArrayList listIterator() method example
ArrayList remove() method example
ArrayList removeAll() method example
ArrayList retainAll() method example
ArrayList replaceAll() method example
ArrayList removeIf() method example
ArrayList sort() method example
ArrayList spliterator() method example
ArrayList subList() method example
ArrayList toArray() method example
2. Java ArrayList Examples
2.1. Create arraylist
Initialize ArrayList
Iterate through ArrayList
2.2. Add elements and remove elements
Add element at particular index of ArrayList
Remove element from ArrayList
Add multiple items to ArrayList
2.3. Sort arraylist
Sort ArrayList
Sort ArrayList of Objects using Comparable and Comparator
Sort ArrayList of objects by multiple fields
Sort ArrayList of objects using Collections.sort() method
2.4. Get/Search
Get Sub List of ArrayList
Find the index of last index of the element in the ArrayList
Get the index of the element in the ArrayList
Get element from ArrayList
Check if element exists in ArrayList
3. Other Tutorials on Java ArrayList
Compare two ArrayLists
Synchronize ArrayList
Swap two elements in ArrayList
Serialize ArrayList
Join two ArrayList
Make ArrayList Empty
Check whether ArrayList is empty or not
Replace the value of existing element in ArrayList
4. Conversions
Convert LinkedList to ArrayList
Convert Vector to ArrayList
Convert ArrayList to String Array
Convert Array to ArrayList
Convert HashSet to ArrayList
5. Differences
ArrayList vs Vector
ArrayList vs LinkedList
References: