import java.io.*;
import java.util.*;
public class Driver {
public static void main(String[] args) {
Greeter g,g2;
g = new Greeter();
g2 = new Greeter("WASSUP","Hop off");
System.out.println(g.happyGreet("Bob"));
System.out.println(g.sadGreet("Bob"));
System.out.println(g2.happyGreet("Lilo"));
System.out.println(g2.sadGreet("Lilo"));
}
}