I was trying to find a way to do some string manipulation and ran across the Commons Lang in a response to another question posted here on stackoverflow. From what I can tell it's a collection of libraries, do I have to download and somehow import this to eclipse?
Commons Lang as you put it is just a general purpose common library that provides a number of useful features.
To use it you need to download the JAR and add it to the Java Build path in Eclipse. See: