How to Traverse Through ArrayList in Reverse Direction in Java

In this example we will show how to iterate through an ArrayList object in reverse direction with Java ListIterator’s previous and hasPrevious methods .

Source Code

package com.beginner.examples;

import java.util.ArrayList;
import java.util.ListIterator;

public class TraverseReverseUsingListIterator {

	public static void main(String[] args) {
		
		//create ArrayList.
		ArrayList arrayList = new ArrayList();

		arrayList.add("A");
		arrayList.add("B");
		arrayList.add("C");
		arrayList.add("D");
		
		//Get ListIterator using listIterator() method.
		ListIterator listIterator = arrayList.listIterator();
		
		System.out.println("Using ListIterator to traversing ArrayList in forward direction");
		while(listIterator.hasNext()) {
		      System.out.println(listIterator.next());
		}
		
		System.out.println("Using ListIterator to traversing ArrayList in reverse direction");
		 while(listIterator.hasPrevious()) {
			 System.out.println(listIterator.previous());
		 }
		      
	}

}

Output:

Using ListIterator to traversing ArrayList in forward direction
A
B
C
D
Using ListIterator to traversing ArrayList in reverse direction
D
C
B
A

References

Imported packages in Java documentation:

• List
• ListIterator
• ArrayList