AlphaPeeler is a crypto educational tool. It includes frequency analysis, mono-alphabetic substitution, Caesar, transposition, Vigenere, & Playfair cipher. Professional features are: DES, Gzip, MD5, SHA1, SHA256, RIPEMD-16, RSA, & secret share files.
Checkstyle is a development tool to help programmers write Java code that adheres to a coding standard. By default it supports the Sun Code Conventions, but is highly configurable. It can be invoked with an ANT task and a command line program.