OpenJDK 6 b13 and JCK testing
Joseph D. Darcy
Joe.Darcy at Sun.COM
Wed Dec 3 15:46:02 PST 2008
The JCK tests probe the conformance of a Java platform implementation to
a specification. For example, JCK 6b is the current test suite to
determine conformance to the Java SE 6 spec. Official claims of
conformance require not only passing the complete set of relevant tests,
but also meeting the other requirements spelled out in the JCK user's guide:
Regarding the JCK, conformance is measured with respect to a binary
rather than to a source base directly, which is sensible since a Java
platform implementation will typically rely on and be affected by the
properties of the host environment, including the OS, the C compiler,
and the processor.
Previously Red Hat announced that using OpenJDK sources augmented with
IcedTea patches, an OpenJDK binary on Fedora 9 passed the JCK and met
the other conformance requirements:
Amongst other changes, after incorporating community-developed patches
(notably 6748251 "Apply IcedTea midi sound patch" in b13) and following
the OpenJDK 6 build instructions, inside Sun a binary resulting from
building the unmodified OpenJDK 6 b13 sources on Redhat Enterprise AS
2.1 with gcc 2.95 (the official Linux build platform for Sun's 6 update
releases) passed all the JCK 6b tests when run on Fedora Core 8 x86.
That binary also meets all the other JCK requirements.
OpenJDK 6 binaries built from b13 (and later) sources on and for
different host environments are now more likely to share those favorable
conformance properties, but testing would be necessary to verify
conformance status and to make any formal statements.
Free and Open Source Java FAQ on TCKs
OpenJDK Conformance Group
More information about the jdk6-dev