Thread: forName() method

As I thought I understood it, the forName() method instantiates a class listed inside the parenthesis of the method.
ex. Ben = Class.forName("nameBen");

I'm confused when I see an example where the argument passed to the method is an arguments[] array with 0 slots.

ben = Class.forName(arguments[0]);

So far in the code the only array would be in the run method at main(String[] arguments) {

I don't really understand what is happening when "arguments[0]" is being given to the forName method.

*I was thinking it might be referring to the first argument in the class which maybe would be the Class variable: Class ben;
but then why would not just the name of that class variable be used?

src coude looks like this

import java.lang.reflect.*;

public class AppFinder {
public static void main(String[] arguments) {
if (arguments.length == 1) {
Class ben;
try {
boolean isApplication = false;
ben = Class.forName(arguments[0]);