hi Jonathan,
If you're using
java 1.4+, you can try
In English: "I'm going to describe a String: if my description matches this particular candidate String exactly, then return true, else false.
The description is this: I'd like any sequence of letters, numbers, or underscores, repeated one or more times. Then, I'd like a period. then, I'd like any sequence of letters, numbers, or underscores, repeated one or more times"
HTH,
M