Java Collections emptySet() Method with Example

Collections Class emptySet() method: Here, we are going to learn about the emptySet() method of Collections Class with its syntax and example.
Submitted by Preeti Jain, on February 03, 2020

Collections Class emptySet() method

emptySet() method is available in java.util package.
emptySet() method is used to return the immutable empty set.
emptySet() method is a static method, so it is accessible with classname and if we try to access the method with the class object then we will not get an error.
emptySet() method does not throw an exception at the time of returning the immutable object.

Syntax:

    public static final Set emptySet();

Parameter(s):

It does not accept any parameter.

Return value:

The return type of this method is Set, it returns an immutable set object which is empty.

Example:

// Java program is to demonstrate the example
// of Set emptySet() of Collections

import java.util.*;

public class EmptySet {
    public static void main(String args[]) {
        // By using emptySet() method is 
        // to get a empty set
        Set set = Collections.emptySet();

        // Display Empty set
        System.out.println("set: " + set);
    }
}

Output

set: []

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