The java.util.concurrent.ConcurrentSkipListSet.remove() method is an in-built function in Java which is used to remove an element if it is present in this set.
Syntax:
ConcurrentSkipListSet.remove(Object o)
Parameters: The function accepts a single parameter o i.e. the object to be removed.
Return Value: The function returns a true boolean value on successful removal of the object, otherwise returns false.
Below programs illustrate ConcurrentSkipListSet.remove() method:
Program 1: The element to be removed is present in the set.
// Java Program Demonstrate remove()// method of ConcurrentSkipListSet  import java.util.concurrent.ConcurrentSkipListSet;  class ConcurrentSkipListSetRemoveExample1 {    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 <= 5; i++)            set.add(i);          // Printing the elements of the set        System.out.println("The elements in the set are:");        for (Integer i : set)            System.out.print(i + " ");          // remove() method will remove the specified        // element from the set        set.remove(1);        set.remove(5);          // Printing the elements of the set        System.out.println("\nRemaining elements in set : ");        for (Integer i : set)            System.out.print(i + " ");    }} |
Output:
The elements in the set are: 1 2 3 4 5 Remaining elements in set : 2 3 4
Program 2: The element to be removed is not present in the set.
// Java Program Demonstrate remove()// method of ConcurrentSkipListSet  import java.util.concurrent.ConcurrentSkipListSet;  class ConcurrentSkipListSetRemoveExample2 {    public static void main(String[] args)    {        // Initializing the set        ConcurrentSkipListSet<Integer> set =                       new ConcurrentSkipListSet<Integer>();          // Adding elements to this set        for (int i = 10; i <= 15; i++)            set.add(i);          // Printing the elements of the set        System.out.println("The elements in the set are:");        for (Integer i : set)            System.out.print(i + " ");          // remove() method will remove the specified        // element from the set        set.remove(1);        set.remove(5);          // Printing the elements of the set        System.out.println("\nRemaining elements in set : ");        for (Integer i : set)            System.out.print(i + " ");    }} |
Output:
The elements in the set are: 10 11 12 13 14 15 Remaining elements in set : 10 11 12 13 14 15
