Transmorph is a Java library used to convert a Java object of one type into an object of another type (with another signature, possibly parameterized). It supports conversion for primitives and objects, conversion to multidimensional arrays, conversion to parameterized collections and types, and jars for JDK 1.4 and JDK 1.5. It has no dependencies. It is easy to add more converters. It can convert to a type given either its Java type (class) or signature.
vCard4J is a complete toolkit to manipulate vCards (RFC 2426) in Java. It contains a parser to read vCard files. It also includes a compiler to extend the library. vCard types are defined in a XML file, making it easy to add custom types. It also contains XSLTs to convert the internal DOM structure into vCards 3.0, xHTML, or other formats.
x4juli is a port of the main parts of log4j to the J2SE Logging API. The default implementation is incomplete and therefore still not widely used, even when introduced in J2SE 1.4. x4juli provides logmanagers, formatters, handlers, and filters to fill the gap. The interface and use of the original API has not been changed. Additionally, x4juli delivers a native implementation of the Jakarta Commons Logging (JCL) API and the Simple Logging Facade for Java (SLF4J) API.