JDK 8 Warnings Cleanup Day -- Dec. 1st, 2011

Xiomara Jayasena xiomara.jayasena at oracle.com
Mon Nov 28 18:10:06 PST 2011

A few teams are planning on cleaning up warnings generated during the JDK build on Dec. 1st.  We would like to invite you to participate.


To be able to participate a prerequisite is that you are able build the JDK. The source that we will target is JDK8.  If you decide to participate then please reply to this e-mail with the area that you intend to work on.  I will keep track of the areas so that there is no overlap of work.


.         A group of us working on this project will create bugs for the areas that developers sign up for.

.         The focus will be on java warnings, since these are less risky.

.         For this exercise please avoid making any API changes or any large scale refactorings.

.         Avoid @SuppressWarnings except where it is clearly necessary.

.         We would like to have the code changes completed by 5pm (PST) on Dec. 1st.

.         A suggested area to work on is the build step defined by: jdk/make/java/java/ which compiles close to 500 .java files and produces over 1200 warnings.  The java files are in java.io, java.lang, java.util and a variety of related packages. 


Process to follow:


1.       Pick a file or a few files to work on and send mail to jdk8-dev by 8am PT on Thursday to let us know which area you would like to work on. 

2.       A bug ID will be generated for this.

3.       Pull this repo to base your changes on it: http://hg.openjdk.java.net/jdk8/tl/jdk

4.       Post your changes for review.  If you have webrev, please use it. If you don't have webrev, please generate a patch and post it here as a .txt attachment.  If the patch is too cumbersome to review, we can generate a webrev for you.

5.       All of the changes must go through the usual build, test and review process before being pushed.  If you are a JDK8 committer you may push after completing the usual process.  If you aren't a committer we will help you review and test your changes.

6.       In order to streamlines the process, Stuart Marks will be consolidating patches and running build and test jobs - thanks to Stuart for doing this!


Lastly to get a build with warnings enable use the following flags:



Tip: Make sure to redirect output to a file.  To find the jdk/make/java/java/Makefile build step mentioned above, open the log file and look for the first occurrence of '# Running javac'. Voluminous warning output should appear below."



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