Java Collections emptyIterator() Method

The emptyIterator() method of Java Collections class is used to get an Iterator that has no elements.

Syntax

Following is the declaration of emptyIterator() method:

Parameter

This method does not accept any parameter.

Returns

The emptyIterator() method returns an empty Iterator.

Exceptions

Compatibility Version

Java 1.7 and above

Example 1

import java.util.*;
public class CollectionsEmptyIteratorExample1 {
	public static void main(String[] args) {
		Iterator<String> Itr = Collections.emptyIterator();
            System.out.println("Output: "+Itr.hasNext());        	 
	      }
}

Test it Now

Output:

Output: false

Example 2

import java.util.*;
public class CollectionsEmptyIteratorExample2 {
	public static void main(String[] args) {		
	   List<String> ls = new ArrayList<String>();
         ls.add("one");
         ls.add("two");
         ls.add("three");
         ls.add("four");
         Iterator<String> Itr = Collections.emptyIterator();
         while(Itr.hasNext()){
              System.out.println(Itr.next());
         }
         System.out.println("Iterator list is empty.");
	   }	  
}

Test it Now

Output:

Iterator list is empty.

Example 3

import java.util.*;
public class CollectionsEmptyIteratorExample3 {
	public static void main(String[] args) {		
		List<Integer> ls = new ArrayList<Integer>();
            ls.add(1);
            ls.add(2);
            ls.add(3);
            ls.add(4);
            Iterator<String> Itr = Collections.emptyIterator();
            while(Itr.hasNext()){
                 System.out.println(Itr.next());
            }
            System.out.println("It is empty Iterator list.");
	      }	  
}

Test it Now

Output: