import java.util.HashSet;


public class Test {

	private int hashCode = 0;
	
	public int hashCode() {
		return hashCode;
	}
	
	public boolean equals() {
		return true;
	}
	
	public static void main(String[] args) {
		HashSet h = new HashSet();
		Test a = new Test();
		h.add(a);
		a.hashCode = 1;
		h.add(a);
		System.out.println(h);
	}
	
}