The iterator() method of CopyOnWriteArraySet returns an iterator over the elements in this Set in proper sequence. The iterator does NOT support the remove method.
Syntax:
public Iterator iterator()
Return Value: The function returns an iterator over the elements in the Set.
Below programs illustrate the above function:
Program 1:
// Java Program to illustrate the CopyOnWriteArraySet// iterator() method in Java import java.util.concurrent.CopyOnWriteArraySet;import java.util.*; public class GFG { public static void main(String[] args) { // create object of CopyOnWriteArraySet CopyOnWriteArraySet<Integer> ArrSet = new CopyOnWriteArraySet<Integer>(); // Add elements ArrSet.add(32); ArrSet.add(67); ArrSet.add(67); ArrSet.add(100); // print CopyOnWriteArraySet System.out.println("CopyOnWriteArraySet: " + ArrSet); // Call iterator() method of Iterator iteratorVals = ArrSet.iterator(); // Print elements of iterator // created from CopyOnWriteArraySet System.out.println("\nThe iterator values of " + "CopyOnWriteArraySet are:\n"); // prints the elements using an iterator while (iteratorVals.hasNext()) { System.out.println(iteratorVals.next()); } }} |
Output:
CopyOnWriteArraySet: [32, 67, 100] The iterator values of CopyOnWriteArraySet are: 32 67 100
Program 2:
// Java Program to illustrate the CopyOnWriteArraySet// iterator() method in Java import java.util.concurrent.CopyOnWriteArraySet;import java.util.*; public class GFG { public static void main(String[] args) { // create object of CopyOnWriteArraySet CopyOnWriteArraySet<String> ArrSet = new CopyOnWriteArraySet<String>(); // Add elements ArrSet.add("gopal"); ArrSet.add("gfg"); ArrSet.add("jgec"); ArrSet.add("sudo"); // print CopyOnWriteArraySet System.out.println("CopyOnWriteArraySet: " + ArrSet); // Call iterator() method of Iterator iteratorVals = ArrSet.iterator(); // Print elements of iterator // created from CopyOnWriteArraySet System.out.println("\nThe iterator values of " + "CopyOnWriteArraySet are:\n"); // prints the elements using an iterator while (iteratorVals.hasNext()) { System.out.println(iteratorVals.next()); } }} |
Output:
CopyOnWriteArraySet: [gopal, gfg, jgec, sudo] The iterator values of CopyOnWriteArraySet are: gopal gfg jgec sudo
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CopyOnWriteArraySet.html#iterator–
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