The java.util.concurrent.ConcurrentSkipListSet.size() method is an in-built function in Java which gives the total count of the elements present in the set.
Syntax:
ConcurrentSkipListSet.size()
Parameters: The function does not accept any parameter.
Return Value: The function returns the number of elements in the queue.
Below programs illustrate the ConcurrentSkipListSet.size() method:
Program 1:
// Java Program Demonstrate size()// method of ConcurrentSkipListSet  import java.util.concurrent.ConcurrentSkipListSet;  class ConcurrentSkipListSetSizeExample1 {    public static void main(String[] args)    {        // Initializing the set        ConcurrentSkipListSet<Integer> set =                        new ConcurrentSkipListSet<Integer>();          // Adding elements to this set        for (int i = 1; i <= 10; i++)            set.add(i);          // Printing the size of the set        System.out.println("Number of elements in the set = "                           + set.size());        // Printing the elements        System.out.println("set : " + set);    }} |
Output:
Number of elements in the set = 10 set : [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
Program 2:
// Java Program Demonstrate size()// method of ConcurrentSkipListSet  import java.util.concurrent.ConcurrentSkipListSet;  class ConcurrentSkipListSetSizeExample2 {    public static void main(String[] args)    {        // Initializing the set        ConcurrentSkipListSet<String> set =                          new ConcurrentSkipListSet<String>();          // Adding elements to this set        set.add("A");        set.add("B");        set.add("C");        set.add("D");        set.add("E");          // Printing the size of the set        System.out.println("Number of elements in the set = "                           + set.size());        // Printing the elements        System.out.println("set : " + set);    }} |
Output:
Number of elements in the set = 5 set : [A, B, C, D, E]
Reference:https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ConcurrentSkipListSet.html#size–
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