The size() method of CopyOnWriteArraySet returns the size of the Set. It returns the number of elements in the current Set.
Syntax:
public int size()
Return Value: The function returns the number of elements in the current Set.
Below programs illustrate the above function:
Program 1:
// Java Program to illustrate the CopyOnWriteArraySet// size() 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>(); // print CopyOnWriteArraySet System.out.println("CopyOnWriteArraySet: " + ArrSet); // size value print System.out.println("size of ArrSet: " + ArrSet.size()); // Add elements ArrSet.add(32); ArrSet.add(67); ArrSet.add(98); ArrSet.add(100); // print CopyOnWriteArraySet System.out.println("CopyOnWriteArraySet: " + ArrSet); // size value print System.out.println("size of ArrSet: " + ArrSet.size()); }} |
Output:
CopyOnWriteArraySet: [] size of ArrSet: 0 CopyOnWriteArraySet: [32, 67, 98, 100] size of ArrSet: 4
Program 2:
// Java Program to illustrate the CopyOnWriteArraySet// size() 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); // size value print System.out.println("size of ArrSet: " + ArrSet.size()); }} |
Output:
CopyOnWriteArraySet: [gopal, gfg, jgec, sudo] size of ArrSet: 4
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CopyOnWriteArraySet.html#size–
