The iterator() method of PriorityBlockingQueue class Returns an iterator over the elements in this queue. The elements returned from this method do not follow any order. The returned iterator is weakly consistent.
Syntax:
public Iterator iterator()
Parameter: This method does not take any parameter.
Returns: This method returns an iterator having same elements as present in PriorityBlockingQueue.
Below program illustrate iterator() method of PriorityBlockingQueue.
Example 1:
// Java Program Demonstrate iterator()// method of PriorityBlockingQueue import java.util.concurrent.PriorityBlockingQueue;import java.util.*; public class GFG { public static void main(String[] args) { // define capacity of PriorityBlockingQueue int capacityOfQueue = 5; // create object of PriorityBlockingQueue PriorityBlockingQueue<Integer> PrioQueue = new PriorityBlockingQueue<Integer>(capacityOfQueue); // Add elements to PriorityBlockingQueue PrioQueue.add(945645); PrioQueue.add(6468516); PrioQueue.add(7564165); PrioQueue.add(45616); // print PrioQueue System.out.println("PrioQueue: " + PrioQueue); // Call iterator() method of PriorityBlockingQueue Iterator iteratorVals = PrioQueue.iterator(); // Print elements of iterator // created from PriorityBlockingQueue System.out.println("The iterator values" + " of PriorityBlockingQueue are:"); while (iteratorVals.hasNext()) { System.out.println(iteratorVals.next()); } }} |
Output:
PrioQueue: [45616, 945645, 7564165, 6468516] The iterator values of PriorityBlockingQueue are: 45616 945645 7564165 6468516
Example 2: To illustrate iterator() method of PriorityBlockingQueue which contains list of names.
// Java Program Demonstrate iterator()// method of PriorityBlockingQueue import java.util.concurrent.PriorityBlockingQueue;import java.util.*; public class GFG { public static void main(String[] args) { // define capacity of PriorityBlockingQueue int capacityOfQueue = 5; // create object of PriorityBlockingQueue PriorityBlockingQueue<String> names = new PriorityBlockingQueue<String>(capacityOfQueue); // Add names of students of girls college names.add("Geeks"); names.add("forGeeks"); names.add("A"); names.add("Computer"); names.add("Portal"); // Call iterator() method of PriorityBlockingQueue Iterator iteratorVals = names.iterator(); // Print elements of iterator // created from PriorityBlockingQueue System.out.println("The Names are:"); while (iteratorVals.hasNext()) { System.out.println(iteratorVals.next()); } }} |
Output:
The Names are: A Computer Geeks forGeeks Portal
Related Article :
Reference:
https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/PriorityBlockingQueue.html#iterator–
