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SortedSet first() method in Java

Last Updated : 11 Jul, 2025

The first() method of SortedSet interface in Java is used toReturns the first i.e., the lowest element currently in this set.
Syntax: 

E first()

Where, E is the type of element maintained by this Set.
Parameters: This function does not accepts any parameter.
Return Value: It returns the first or the lowest element currently in the set.
Exceptions: It throws NoSuchElementException, if the set is empty.
Below programs illustrate the above method:
Program 1: 


Output: 
Lowest element in set is : 1

 

Program 2: 


Output: 
Exception: java.util.NoSuchElementException

 

Reference: https://docs.oracle.com/javase/10/docs/api/java/util/SortedSet.html#first()
 

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