Driver.java

public class Driver{

    public static void main(String[] args){
	
	Greeter g, g2, g3, g4;
	String result;

	g = new Greeter();
	g.setGreeting("Hello");
	g2 = new Greeter();
	g2.setGreeting("How are you doing");
	result = g.greet("Tom");
	System.out.println(result);
	result = g2.greet("Sarah");
	System.out.println(result);
	g3 = new Greeter();
	g3.setGreeting("Howdy");
	result = g3.greet("Tom");
	System.out.println(result);
	g4 = new Greeter();
	g4.setGreeting ("sup");
	result = g4.greet("Fred");
	System.out.println(result);

    }
}