Java Collections emptySortedSet() Method with Examples

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The emptySortedSet() method of Java Collections is used to get the set that has no elements. This method is used in set collection. A set is a data structure that stores unique elements in a sorted manner.

Syntax:

public static final <T> Set<T> emptySortedSet()

Parameters: This will take no parameters.

Return Type: It will return an empty set that is immutable.

Example 1:

Java program to create an empty sorted set

Java

import java.util.*;
  
public class GFG {
    // main method
    public static void main(String[] args)
    {
        // create an empty sorted set
        Set<String> data
            = Collections.<String>emptySortedSet();
        
        // display
        System.out.println(data);
    }
}

Output

[]

Example 2:

In this program, we are going to create an empty sorted set and add elements to the set. This code will return an error.

Java

import java.util.*;
  
public class GFG {
    // main method
    public static void main(String[] args)
    {
        // create an empty sorted set
        Set<String> data
            = Collections.<String>emptySortedSet();
        
        // add 3 elements
        data.add("ojaswi");
        data.add("ramya");
        data.add("deepu");
  
        // display
        System.out.println(data);
    }
}

Output:

Exception in thread "main" java.lang.UnsupportedOperationException
    at java.util.Collections$UnmodifiableCollection.add(Collections.java:1057)
    at GFG.main(GFG.java:9)