Mattias Jiderhamn is an architect and development lead at Lexmark Enterprise Software. He has been developing in Java for 15 years, specializing on enterprise cloud solutions. He has declared war against ClassLoader leaks through his blog, where he maintains a long list of offending third party libraries and links to their bug reports, many of which he has submitted. He has released a ClassLoader Leak Prevention library with the hopes of saving the Java world from java.lang.OutOfMemoryError: PermGen space/Metaspace. Thanks to this library, the Java EE application servers of his cloud solutions don't require any restarts despite continuous deploys.