Updating JDK libraries to use Project Coin features
joe.darcy at oracle.com
Tue Dec 14 17:34:49 PST 2010
The JDK 7 build has been using -source 7 for some time, but to date use
of new language features has been informal and incidental. Supporting
Project Coin and JSR 334, Stuart Marks will be leading a "minting"
exercise over the JDK code base to systematically update the JDK
libraries to take advantage of the Project Coin language features.
Efforts will be focused on the src and test portions of the jdk
repository of the JDK 7 forest.  The first features to be rolled
into the code will be diamond and strings in switch.
Review requests for different areas will be sent to the appropriate
OpenJDK aliases for review. The proposed changes will consist solely of
conversions of existing code to use a new language feature. While use
of the new features is encouraged, in areas of the platform where code
is kept synchronized with earlier release trains, such code cannot be
updated to use the Project Coin features at this time.
For several years, we've been collaborating with the NetBeans team to
provide IDE support for the Project Coin features. NetBeans 7 Beta 
is the latest release to support Project Coin, as detailed in its
release notes.  We will continue to coordinate with the NetBeans
team to update the Project Coin support in NetBeans as refinements are
made to the Project Coin features. Additionally, to allow use of
NetBeans for JDK development, we will defer updating the JDK to use a
Coin feature until there is matching support in a NetBeans build, as
there is now for diamond and strings in switch. (The NetBeans 7 Beta
supports a slightly older version of multi-catch and try-with-resources.
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