Java Collections emptyNavigableSet() Method with Examples
Last Updated :
03 Jan, 2022
The emptyNavigableSet() 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 can store unique elements.
Syntax:
public static final <T> Set<T> emptyNavigableSet()
Parameters: This will take no parameters.
Return: It will return an empty navigable set that is immutable.
Example 1:
Java
import java.util.*;
public class GFG {
public static void main(String[] args)
{
Set<String> data
= Collections.<String>emptyNavigableSet();
System.out.println(data);
}
}
|
Example 2: In this program, we are going to create an empty navigable set and add elements to the set. This will return an error.
Java
import java.util.*;
public class GFG {
public static void main(String[] args)
{
Set<String> data
= Collections.<String>emptyNavigableSet();
data.add( "ojaswi" );
data.add( "ramya" );
data.add( "deepu" );
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:10)
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