The iterator() method of LinkedBlockingDeque returns an iterator over the elements in this deque in a proper sequence. The elements will be returned in order from first (head) to last (tail). The returned iterator is a “weakly consistent” iterator.
Syntax:
public Iterator iterator()
Parameters: This method does not accept any parameter.
Returns: This method returns an iterator over the elements in this deque in a proper sequence.
Below programs illustrate iterator() method of LinkedBlockingDeque:
Program 1:
// Java Program Demonstrate iterator() // method of LinkedBlockingDeque import java.util.concurrent.LinkedBlockingDeque;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// create object of LinkedBlockingDeque
LinkedBlockingDeque<Integer> LBD
= new LinkedBlockingDeque<Integer>();
// Add numbers to front of LinkedBlockingDeque
LBD.addFirst( 7855642 );
LBD.addFirst( 35658786 );
LBD.addFirst( 5278367 );
LBD.addFirst( 74381793 );
// Call iterator() method of LinkedBlockingDeque
Iterator iteratorVals = LBD.iterator();
// Print elements of iterator
// created from PriorityBlockingQueue
System.out.println( "The iterator values"
+ " of LinkedBlockingDeque are:" );
// prints the elements using an iterator
while (iteratorVals.hasNext()) {
System.out.println(iteratorVals.next());
}
}
} |
The iterator values of LinkedBlockingDeque are: 74381793 5278367 35658786 7855642
Program 2:
// Java Program Demonstrate iterator() // method of LinkedBlockingDeque // when list is of strings import java.util.concurrent.LinkedBlockingDeque;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// create object of LinkedBlockingDeque
LinkedBlockingDeque<String> LBD
= new LinkedBlockingDeque<String>();
// Add numbers to front of LinkedBlockingDeque
LBD.add( "Geeks" );
LBD.add( "forGeeks" );
LBD.add( "A" );
LBD.add( "Computer" );
LBD.add( "Portal" );
// Call iterator() method of LinkedBlockingDeque
Iterator iteratorVals = LBD.iterator();
// Print elements of iterator
// created from PriorityBlockingQueue
System.out.println( "The iterator values"
+ " of LinkedBlockingDeque are:" );
// prints the elements using an iterator
while (iteratorVals.hasNext()) {
System.out.println(iteratorVals.next());
}
}
} |
The iterator values of LinkedBlockingDeque are: Geeks forGeeks A Computer Portal
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/LinkedBlockingDeque.html#iterator()