class Oct25 {
	public static void main(String[] args) {

		Student s1 = new Student("Billy");
		System.out.println(s1.toString());
		System.out.println(s1);

		s1.setAddress("123 Maple Lane");
		System.out.println(s1);

		Student s2 = new Student("Billy", "456 Maple Lane");
		System.out.println(s2);

		Student s3 = null;

		boolean equal = (s1.equals(s3));
		System.out.printf("equal: %b\n", equal);

		
	}
}