The size() method of CopyOnWriteArrayList returns the size of the list. It returns the number of elements in the list.
Syntax:
public int size()
Parameters: The function does not accepts any parameter.
Return Value: The function returns the size of the list.
Below programs illustrate the above function:
Program 1:
// Java Program to illustrate the CopyOnWriteArrayList// size() method in Javaimport java.util.concurrent.CopyOnWriteArrayList;import java.util.*; public class GFG { public static void main(String[] args) { // create object of CopyOnWriteArrayList CopyOnWriteArrayList<Integer> ArrLis = new CopyOnWriteArrayList<Integer>(); // Add elements ArrLis.add(32); ArrLis.add(67); ArrLis.add(98); ArrLis.add(100); // print CopyOnWriteArrayList System.out.println("CopyOnWriteArrayList: " + ArrLis); // size value print System.out.println("size of ArrLis: " + ArrLis.size()); }} |
Output:
CopyOnWriteArrayList: [32, 67, 98, 100] size of ArrLis: 4
Program 2:
// Java Program to illustrate the CopyOnWriteArrayList// size() method in Javaimport java.util.concurrent.CopyOnWriteArrayList;import java.util.*; public class GFG { public static void main(String[] args) { // create object of CopyOnWriteArrayList CopyOnWriteArrayList<String> ArrLis = new CopyOnWriteArrayList<String>(); // Add elements ArrLis.add("gopal"); ArrLis.add("gfg"); ArrLis.add("jgec"); ArrLis.add("sudo"); // print CopyOnWriteArrayList System.out.println("CopyOnWriteArrayList: " + ArrLis); // size value print System.out.println("size of ArrLis: " + ArrLis.size()); }} |
Output:
CopyOnWriteArrayList: [gopal, gfg, jgec, sudo] size of ArrLis: 4
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CopyOnWriteArrayList.html#size–
