import java.util.*;

/**
 * This example program fails to find t2 in the set unless the Time class
 * implements a proper hashCode method.
 * @author Marty Stepp
 * @version CSE 331 Spring 2011, 5/25/2011
 */
public class Example2 {
	public static void main(String[] args) {
		// assuming that Time is a class we have written,
		// and that Time does have a proper equals method
		Time t1 = new Time(11, 30, true);
		Time t2 = new Time(11, 30, true);
		Set<Time> set = new HashSet<Time>();
		set.add(t1);
		System.out.println(set.contains(t1));  // true
		System.out.println(set.contains(t2));  // false
	}
}