The Java.util.HashSet.clear() method is used to remove all the elements from a HashSet. Using the clear() method only clears all the element from the set and not deletes the set. In other words, we can say that the clear() method is used to only empty an existing HashSet.
Syntax:
Hash_Set.clear()
Parameters: The method does not take any parameter
Return Value: The function does not returns any value.
Below program illustrate the Java.util.HashSet.clear() method:
import java.io.*;
import java.util.HashSet;
public class HashSetDemo{
public static void main(String args[])
{
HashSet<String> set = new HashSet<String>();
set.add( "Welcome" );
set.add( "To" );
set.add( "Geeks" );
set.add( "4" );
set.add( "Geeks" );
System.out.println( "HashSet: " + set);
set.clear();
System.out.println( "The final set: " + set);
}
}
|
Output:
HashSet: [4, Geeks, Welcome, To]
The final set: []
Whether you're preparing for your first job interview or aiming to upskill in this ever-evolving tech landscape,
GeeksforGeeks Courses are your key to success. We provide top-quality content at affordable prices, all geared towards accelerating your growth in a time-bound manner. Join the millions we've already empowered, and we're here to do the same for you. Don't miss out -
check it out now!
Last Updated :
26 Nov, 2018
Like Article
Save Article