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Showing content from https://www.geeksforgeeks.org/java/concurrentskiplistset-add-method-in-java/ below:

ConcurrentSkipListSet add() method in Java

Last Updated : 17 Sep, 2018

The

java.util.concurrent.ConcurrentSkipListSet.add()

method is an in-built function in Java which is used to insert an element in this set.

Syntax:

ConcurrentSkipListSet.add(E e)

Parameters:

The function accepts a single parameter

i.e. the element to be inserted.

Return Value:

The function returns a True boolean value. Below programs illustrate the ConcurrentSkipListSet.add() method:

Program 1:

Adding Integer in the set.

Java


 // Java program to demonstrate add()
// method of ConcurrentSkipListSet

import java.util.concurrent.*;

class ConcurrentSkipListSetAddExample1 {
    public static void main(String[] args)
    {
        // Creating a set object
        ConcurrentSkipListSet<Integer> Lset = 
                  new ConcurrentSkipListSet<Integer>();

        // Adding elements to this set
        for (int i = 10; i <= 50; i += 10)
            Lset.add(i);

        // Printing elements of the set
        System.out.println("The set contains: ");
        for (Integer i : Lset)
            System.out.print(i + " ");
    }
}

Output:

The set contains: 
10 20 30 40 50

Program 2:

Adding String in the set.

Java


 // Java program to demonstrate add()
// method of ConcurrentSkipListSet

import java.util.concurrent.*;

class ConcurrentSkipListSetAddExample2 {
    public static void main(String[] args)
    {
        // Creating a set object
        ConcurrentSkipListSet<String> Lset = 
                     new ConcurrentSkipListSet<String>();

        // Adding elements to this set
        Lset.add("alex");
        Lset.add("bob");
        Lset.add("chuck");
        Lset.add("drake");
        Lset.add("eric");

        // Printing elements of the set
        System.out.println("The set contains: ");
        for (String i : Lset)
            System.out.print(i + " ");
    }
}

Output:

The set contains: 
alex bob chuck drake eric

Reference: https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/ConcurrentSkipListSet.html#add(E)

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