Java HashSet.isEmpty()
Syntax
HashSet.isEmpty() has the following syntax.
public boolean isEmpty()
Example
In the following code shows how to use HashSet.isEmpty() method.
/*from w w w . j a v a2 s . c om*/
import java.util.HashSet;
public class Main {
public static void main(String args[]) {
HashSet<String> newset = new HashSet <String> ();
// populate hash set
newset.add("Learning");
newset.add("from");
newset.add("java2s.com");
// check if the has set is empty
boolean isempty=newset.isEmpty();
System.out.println("Is the hash set empty: "+ isempty);
}
}
The code above generates the following result.
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