Java Deque iterator() Method with Examples

by Online Tutorials Library July 22, 2022

Java Deque iterator() Method

The iterator() method of Java Deque Interface is used to return an iterator for the elements in the deque in a proper sequence. The elements are returned in a order from first(head) to last(tail).

Specified by:

iterator in interface Collection<E>
iterator in interface Iterable<E>

Syntax:

Parameter:

Return:

The above method returns an iterator for the elements in the given deque in a proper sequence.

Example 1

  import java.util.ArrayDeque;  import java.util.Deque;  import java.util.Iterator;  public class JavaDequeiteratorExample1 {     public static void main(String[] args) {  Deque<String> deque = new ArrayDeque<>();     System.out.println(“The series of month is given as : “);     deque.add(“January”);     deque.add(“February”);     deque.add(“March”);     deque.add(“April”);     deque.add(“May”);     deque.add(“June”);     deque.add(“July”);     deque.add(“August”);     deque.add(“September”);     deque.add(“October”);     deque.add(“November”);     deque.add(“December”);        for(Iterator itr = deque.iterator();      itr.hasNext();)  {           System.out.println(itr.next());         }     }  }  

Test it Now

Output:

The series of month is given as :   January  February  March  April  May  June  July  August  September  October  November  December

Example 2

  import java.util.ArrayDeque;  import java.util.Deque;  import java.util.Iterator;  public class JavaDequeiteratorExample2 {   public static void main(String[] args) {  Deque<Float> deque = new ArrayDeque<>();     System.out.println(“The series of marks is given as : “);     deque.add(34f);     deque.add(25f);     deque.add(66f);     deque.add(39f);   for(Iterator itr = deque.iterator();      itr.hasNext();)  {       System.out.println(itr.next());       }    }  }  

Test it Now

Output:

The series of marks is given as :   34.0  25.0  66.0  39.0

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