ConcurrentSkipListSet last() method in Java
The last() method of java.util.concurrent.ConcurrentSkipListSet is an in-built function in Java which returns the last (highest) element currently in this set.
Syntax:
public E last()
Return Value: The function returns returns the last (highest) element currently in this set.
Exception: The function throws the NoSuchElementException if this set is empty.
Below programs illustrate the ConcurrentSkipListSet.last() method:
Program 1:
// Java program to demonstrate last()// method of ConcurrentSkipListSet  import java.util.concurrent.ConcurrentSkipListSet;  class ConcurrentSkipListSetLastExample1 {    public static void main(String[] args)    {          // Initializing the set        ConcurrentSkipListSet<Integer>            set = new ConcurrentSkipListSet<Integer>();          // Adding elements to this set        set.add(78);        set.add(64);        set.add(12);        set.add(45);        set.add(8);          // Printing the highest element of the set        System.out.println("The highest element of the set: "                           + set.last());    }} |
Output:
The highest element of the set: 78
Program 2: Program to show NoSuchElementException in last().
// Java program to demonstrate last()// method of ConcurrentSkipListSet  import java.util.concurrent.ConcurrentSkipListSet;  class ConcurrentSkipListSetLastExample1 {    public static void main(String[] args)    {          // Initializing the set        ConcurrentSkipListSet<Integer>            set = new ConcurrentSkipListSet<Integer>();        try {            // Printing the highest element of the set            System.out.println("The highest element of the set: "                               + set.last());        }        catch (Exception e) {            System.out.println("Exception: " + e);        }    }} |
Output:
Exception: java.util.NoSuchElementException
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ConcurrentSkipListSet.html#last–
