JTB is a syntax tree builder to be used with the Java Compiler Compiler (JavaCC) parser generator. JTB was originally developped at UCLA up to version 1.3.2. It has been upgraded in version 1.4.0+ (2009-2010), as an embedded tool within the SourceForge Eclipse JavaCC plugin. From 2011 to 2016 it was provided HERE as a standalone tool in the same hosting environment as JavaCC. Since 2017 IT HAS MOVED TO GITHUB (https://github.com/jtb-javacc/JTB).