Java ArrayList listIterator()

In this tutorial, we will learn about the Java ArrayList listIterator() method, and learn how to use this method to get the ListIterator for the elements in this ArrayList, with the help of examples.

Java ArrayList listIterator() method

ArrayList listIterator() returns a list iterator over the elements in this ArrayList (in proper sequence).

Syntax

The syntax of listIterator() method is

ArrayList.listIterator()

Returns

The method returns ListIterator<E> object.

1. listIterator() – Get list iterator for given ArrayList

In this example, we will define an ArrayList of Strings and initialize it with some elements in it. We will use ArrayList listIterator() method to get the ListIterator for the elements in this ArrayList.

Java Program

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

public class Example {
	public static void main(String[] args) {
		ArrayList<String> arrayList = new ArrayList<String>();  
		arrayList.add("a");  
		arrayList.add("b");  
		arrayList.add("c"); 
		arrayList.add("d");    

		ListIterator<String> listIterator = arrayList.listIterator(); 
		while (listIterator.hasNext()) { 
			System.out.println(listIterator.next()); 
		} 
	}
}

Output

a
b
c
d

listIterator(int index)

ArrayList listIterator() returns a list iterator over the elements in this list (in proper sequence), starting at the specified position in the list.

Syntax

The syntax of listIterator() method with the index argument is

ArrayList.listIterator(int index)

where

Parameter	Description
index	The index of the first element to be returned from the list iterator.

Returns

The method returns ListIterator<E> object.

2. listIterator(int index) Example

In this example, we will define an ArrayList of Strings and initialize it with some elements in it. We will use ArrayList listIterator(index) method to get the ListIterator for the elements from index=2 in this ArrayList.

Java Program

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

public class Example {
	public static void main(String[] args) {
		ArrayList<String> arrayList = new ArrayList<String>();  
		arrayList.add("a");  
		arrayList.add("b");  
		arrayList.add("c"); 
		arrayList.add("d");    

		int index = 2;
		ListIterator<String> listIterator = arrayList.listIterator(index); 
		while (listIterator.hasNext()) { 
			System.out.println(listIterator.next()); 
		} 
	}
}

Output

c
d

Conclusion

In this Java Tutorial, we have learnt the syntax of Java ArrayList listIterator() method, and also learnt how to use this method with the help of Java example programs.