How to create empty set using Collections class?

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The java.util.Collections class consists exclusively of static methods that operate on or return collections. It contains polymorphic algorithms that operate on collections, “wrappers”, which return a new collection backed by a specified collection, and a few other odds and ends.

Collections.emptySet() method will returns the empty set (immutable).
Syntax: public static final Set emptySet()

Example

package com.w3schools;
 
import java.util.Collections;
import java.util.Set;
 
public class Test { 
    public static void main(String a[]){         
        Set<String> set = Collections.<String>emptySet();
        System.out.println("Empty set: "+set);
    }
}

Output

Empty set: []

Java Collections class examples