HashSet - isEmpty, size and clear methods program.
import java.util.HashSet;
import java.util.Set;
/**
* Copyright (c), AnkitMittal JavaMadeSoEasy.com
*/
public class HashSetTest {
public static void main(String args[]) {
// creates array with initial capacity of 10.
Set<String> hashSet = new HashSet<String>();
System.out.println("--------add element ");
hashSet.add("ankit");
hashSet.add("mittal");
hashSet.add("javaMadeSoEasy");
System.out.println("hashSet = "+hashSet);
System.out.println("hashSet.isEmpty() = "+hashSet.isEmpty());
System.out.println("\n--------clear list - remove all elements from set");
hashSet.clear();
System.out.println("hashSet.isEmpty() = "+hashSet.isEmpty());
System.out.println("hashSet = "+hashSet);
}
}
/*OUTPUT
--------add element
hashSet = [ankit, mittal, javaMadeSoEasy]
hashSet.isEmpty() = false
--------clear list - remove all elements from set
hashSet.isEmpty() = true
hashSet = []
*/
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