The forEach() method of CopyOnWriteArraySet is an in-built function in Java which is used to traverse each element in this Set.
Syntax:
public void forEach (Consumer<E> action)
Parameters: This method takes a parameter action which represents the action to be performed for each element.
Return Value: This method does not returns anything.
Exceptions: This method throws NullPointerException if the specified action is null.
Below program illustrates the forEach() function of CopyOnWriteArraySet class:
Example 1:
// Java Program to illustrate the CopyOnWriteArraySet// forEach() 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(2); ArrSet.add(3); ArrSet.add(4); ArrSet.add(7); ArrSet.add(8); // print CopyOnWriteArraySet System.out.println("CopyOnWriteArraySet: " + ArrSet); System.out.println("Traversing this Set: "); // Traverse this set using forEach() method ArrSet.forEach((n) -> System.out.println(n)); }} |
Output:
CopyOnWriteArraySet: [2, 3, 4, 7, 8] Traversing this Set: 2 3 4 7 8
Example 2:
// Java Program to illustrate the CopyOnWriteArraySet// forEach() 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("Lazyroar"); ArrSet.add("Geeks"); ArrSet.add("Computer Science"); ArrSet.add("Portal"); ArrSet.add("Gfg"); // Print CopyOnWriteArraySet System.out.println("CopyOnWriteArraySet: " + ArrSet); System.out.println("Traversing this Set: "); // Traverse this set using forEach() method ArrSet.forEach((n) -> System.out.println(n)); }} |
Output:
CopyOnWriteArraySet: [Lazyroar, Geeks, Computer Science, Portal, Gfg] Traversing this Set: Lazyroar Geeks Computer Science Portal Gfg
