LinkedList ListIterator in java

In the previous post, we have learnt about Iterator in LinkedList. In this post, we will study about LinkedList ListIterator in java.

In LinkedList , ListIterator allows to iterator over in forward and backward directions unlike Iterator which iterates only in forward direction. It has the following methods to iterate.

hasPrevious(): Search in backward direction.

hasNext(): Search in forward direction.

next(): Gets the next element.

Previous(): Gets the previous element.

import java.util.LinkedList;
import java.util.ListIterator;

public class LinkedListEx {

	public static void main(String[] args) {
		LinkedList<String> fruits = new LinkedList<String>();
		fruits.add("Orange");
		fruits.add("Mango");
		fruits.add("Apple");
		fruits.add("Grapes");
		fruits.add("Mango");
		fruits.add("Banana");
		fruits.add("Grapes");
		fruits.add("Dates");
		
		ListIterator iter= fruits.listIterator();
		while(iter.hasNext()){
			System.out.println(iter.next());
		}
		System.out.println("****************************************");
		while(iter.hasPrevious()){
			System.out.println(iter.previous());
		}

	}
}

Output:

List in forward direction
Orange
Mango
Apple
Grapes
Mango
Banana
Grapes
Dates
List in Backward direction
Dates
Grapes
Banana
Mango
Grapes
Apple
Mango
Orange