The java.util.SortedSet.isEmpty() method is used to check if a SortedSet is empty or not. It returns True if the SortedSet is empty otherwise it returns False.
Syntax:
boolean isEmpty()
Parameters: This method does not take any parameter.
Return Value: The method returns True if the SortedSet is empty else returns False.
Note: The isEmpty() method in SortedSet is inherited from the Set interface in Java.
Below program illustrate the java.util.SortedSet.isEmpty() method:
import java.io.*;
import java.util.*;
public class SortedSetDemo {
public static void main(String args[])
{
SortedSet<String> set
= new TreeSet<String>();
set.add( "Welcome" );
set.add( "To" );
set.add( "Geeks" );
set.add( "4" );
set.add( "Geeks" );
System.out.println( "Set: " + set);
System.out.println( "Is the set empty? "
+ set.isEmpty());
set.clear();
System.out.println( "Is the set empty? "
+ set.isEmpty());
}
}
|
Output:
Set: [4, Geeks, To, Welcome]
Is the set empty? false
Is the set empty? true
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/Set.html#isEmpty()
Whether you're preparing for your first job interview or aiming to upskill in this ever-evolving tech landscape,
GeeksforGeeks Courses are your key to success. We provide top-quality content at affordable prices, all geared towards accelerating your growth in a time-bound manner. Join the millions we've already empowered, and we're here to do the same for you. Don't miss out -
check it out now!
Last Updated :
30 Sep, 2019
Like Article
Save Article