Sun Java Platform, Standard Edition 6u6
The Sun Java Platform, Standard Edition (JSE) Development Kit (JDK) contains the essential compiler, tools, runtime libraries, and APIs for developers writing, deploying, and running applets and applications in the Java programming language. The JSE Runtime Environment (JRE) contains the runtime libraries and tools for running applets and applications.
A workaround for the infamous Xlib/XCB locking assertion issue was introduced. A memory leak when using Kerberos authentication with LoginContext was fixed. Several other bugs were fixed.
URL: Java Platform, Standard Edition 6 Release