TreeSet isEmpty() in Java

isEmpty(): This method is available in java.util.TreeSet class of Java.

Syntax:

boolean java.util.TreeSet.isEmpty()

This method returns true if this set contains no elements.

Parameters: NA

Returns: true if this set contains no elements.

Exceptions: NA

Approach

Java

import java.util.TreeSet;

public class TreeSetisEmpty {
    public static void main(String[] args) {

        TreeSet<String> treeSet = new TreeSet<String>();

        treeSet.add("Hello");
        treeSet.add("Java");
        treeSet.add("Program");
        treeSet.add("C++");

        System.out.println(treeSet.isEmpty());

    }
}

Output:

false