Using an IDE to work on the Java library

[Andrew Haley]

Hi, and thanks for helping. Thanks for your patience!

On 27/11/17 15:42, Maurizio Cimadamore wrote:

> over the last few years, Chris and I have been promoting IntelliJ 
> support for JDK [1] - the results of this work are included in OpenJDK, 
> and you can create an idea project as follows:
> 
>   sh bin/idea.sh jdk.internal.vm.ci
> 
> the command idea.sh takes a list of modules you want to work on. I 
> tested it with the above module (which I've seen mentioned in this 
> thread) and found no issues.
> 
> Few months ago we also released the IntelliJ jtreg plugin which allows 
> you to run/debug tests.
> 
> I agree that we need to come up with ways to make it easier for people 
> to work/hack on openjdk using IDEs - hopefully this is a step in the 
> right direction. Note that this script works by delegating all 
> configuration decisions to the makefile - so, assuming you have an 
> existing build configuration, the source roots should be tailored for 
> your OS/HW combo.
> 
> [1] - 
> http://mail.openjdk.java.net/pipermail/discuss/2015-January/003645.html
> [2] - 
> http://mail.openjdk.java.net/pipermail/jtreg-dev/2016-October/000390.html

OK, so I do this and open the [jdk] directory.  So far, so good.

And I can open the files in the jdk.internal.vm.ci directory, and they
are recognized.  Now, I see at the top of the file "Project SDK is not
defined".  That looks bad -- is there something wrong?  Do you expect
to see this message?

But the really severe problem I now have is that I can't see any way
to create a program that uses this configuration.  Let's say I want to
create Hello.java that uses this JDK.  I can create a new Java class
under test, but I'm now stuck because of "Project SDK is not defined".

What would you do at this point?  Thanks.

-- 
Andrew Haley
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
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