public class PuzzleOne {
	public static void main(String[] args) {
		method(null);
	}
	public static void method(Object o) {
		System.out.println("Object");
	}
	public static void method(String s) {
		System.out.println("String");
	}
}

public class PuzzleTwo {
	public static void main(String[] args) {
		method(null);
	}
	public static void method(Object o) {
		System.out.println("Object");
	}
	public static void method(String s) {
		System.out.println("String");
	}
	public static void method(StringBuffer s) {
		System.out.println("StringBuffer");
	}
}