Classfile Reader & Writer is a Java package that makes it easy to read and write Java class files. It does not provide any help with displaying the contents of a class file (besides debug output) or disassembe the byte codes, but can read "obfuscated" class files such as those generated by Crema.
The Java Binary Enhancement Tool (JBET) is a general Java program analysis and manipulation tool. Existing class files can be disassembled, eassembled, or edited programmatically through the JBET API. JBET can also be used to create new Java class files from scratch. It uses a convenient internal representation of all the contents of Java binary (.class) files, allowing the user to edit the classes easily, in a structured manner.
Multi-Dimensional Clustering (MDC) Table Size Estimator for DB2 is an application that can be used to optimally estimate space requirements based on table statistics and MDC parameters. It has the ability to use one or more clustering dimensions, which speeds up the query process and frees users from the burdens of converting a table to MDC on AIX and Windows.