JD-Core is a freeware library that reconstructs Java source code from one or more ¡°.class¡± files. JD-Core may be used to recover lost source code and explore the source of Java runtime libraries. New features of Java 5, such as annotations, generics or type ¡°enum¡±, are supported. JD-GUI includes JD-Core library. JD-GUI is a standalone graphical utility that displays Java source codes of ¡°.class¡± files. You can browse the reconstructed source code with the JD-GUI for instant access to methods and fields. JD-Core and JD-GUI are free for non-commercial use. This means that JD-Core and JD-GUI shall not be included or embedded into commercial software products. Nevertheless, JD-Core and JD-GUI may be freely used for personal needs in a commercial or non-commercial environments.