JTFL is a Processing library for parsing the result from the (T)ransport (F)or (L)ondon APIs.
Right now it only supports the Bus Stop Instant Prediction functionality.
There's an example under examples/KingsCrossStationStopInfo
Javadocs: http://jtfl4processing.elibralato.com/reference/index.html
NOTE: It is really reccomended to read the official TFL documentation that you can find at http://www.tfl.gov.uk/assets/downloads/businessandpartners/tfl-live-bus-arrivals-api-documentation.pdf
and especially those two paragraphs -4.1.1 Request parameters -6 Glossary of terms
Download it as a zip here: http://jtfl4processing.elibralato.com/download/jtfl4processing-1.zip