Java HashSet Contains Example

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import java.util.HashSet;

public class JavaHashSetContainsExample {

	public static void main(String[] args) {

		HashSet hashSet = new HashSet();

		hashSet.add(new Integer("1"));
		hashSet.add(new Integer("2"));
		hashSet.add(new Integer("3"));

		boolean blnExists = hashSet.contains(new Integer("3"));
		System.out.println("Result: " + blnExists);

		blnExists = hashSet.contains(new Integer("4"));
		System.out.println("Result: " + blnExists);

	}
}
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