/*
Check if a particular element exists in Java HashSet Example
This Java Example shows how to check whether an elements is contained in Java
HashSet using contains method.
*/
import java.util.HashSet;
public class CheckElementHashSetExample {
public static void main(String[] args) {
//create object of HashSet
HashSet hSet = new HashSet();
//add elements to HashSet object
hSet.add(new Integer("1"));
hSet.add(new Integer("2"));
hSet.add(new Integer("3"));
/*
To check whether a particular value exists in HashSet use
boolean contains(Object value) method of HashSet class.
It returns true if the HashSet contains the value, otherwise false.
*/
boolean blnExists = hSet.contains(new Integer("3"));
System.out.println("3 exists in HashSet ? : " + blnExists);
}
}
/*
Output would be
3 exists in HashSet ? : true
*/
