HashSet isEmpty() method in java
import java.util.HashSet;
public class HashSetIsEmptyMethodExample
{
public static void main(String[] args)
{
HashSet<String> hs = new HashSet<String>();
hs.add("Welcome");
hs.add("hello");
hs.add("world");
hs.add("core");
hs.add("java");
System.out.println("HashSet before using isEmpty() method: " + hs);
// check if HashSet is empty
System.out.println("Is the HashSet empty: " + hs.isEmpty());
// clear HashSet using clear() method
hs.clear();
// again check if HashSet is empty
System.out.println("Is the HashSet empty: " + hs.isEmpty());
}
}