cannot resolve symbol error

[Jared Knowlton]

I am getting the cannot resolve symbol error and I checked that the Caps match throughout and that the Brackets and braces are all matched up.
Code follows:
public class Authenticator
{
public static void main(String args[])
{
System.out.println();
System.out.print("Username: ");
String username=DummiesIO.getString();
System.out.print("Password: ");
String password=DummiesIO.getString();
System.out.println();
if (
(username.equals("bburd") &&
password.equals("swordfish")) ||
(username.equals("hritter") &&
password.equals("preakston"))
)
System.out.println("You're in.");
else
System.out.println("Sorry, pal. You can't log in.");
System.out.println();
}
}

[Tina Coleman]

It doesn't give you a line number? And how's DummiesIO (interestingly named class) fit? I'm assuming its got a public static method called getString, and that DummiesIO is either in the same package as your class, or that you have an import statement that you're not showing in your code sample?

[Jared Knowlton]

I think I figured it out. I made sure that the DummiesIO.java file was in the same folder as the file I was running.