JDK 9 images are now modular with JDK 9 Early Access build 41

[Ben Evans]

I wasn't proposing that the JDK change to accomodate NB. This is
simply a current-state-of-play report.

Ben

On Tue, Dec 9, 2014 at 12:00 PM, Ivan St. Ivanov
<ivan.st.ivanov at gmail.com> wrote:
> Hi Ben,
>
> IMHO it is NetBeans (and eventually all the IDEs) that have to adapt to the
> new features of the JDK: the MaxPermSize and the rt.jar removal.
>
> Cheers,
> Ivan
>
> On Tue, Dec 9, 2014 at 1:50 PM, Rory O'Donnell <rory.odonnell at oracle.com>
> wrote:
>>
>> Hi Ben,
>>
>> If you are still having these issues with b41, can you post your finding
>> in the jigsaw-dev
>> mailng list ?
>>
>> Thanks,Rory
>>
>> On 09/12/2014 11:48, Ben Evans wrote:
>>>
>>> Hi,
>>>
>>> I've been working with JDK 9 EA b40. Here are my notes (all of this is
>>> on Mac OS Mavericks 10.9.5).
>>>
>>> Rory, can you confirm if any of this has been fixed in b41?
>>> Particularly the overwriting of settings, as this one is basically a
>>> showstopper for running hack days involving Mac users IMO.
>>>
>>> 1) Upgrade via .dmg overwrote all Java settings, rather than adding.
>>> This basically broke every installed Java app on my system.
>>>    - How to undo? There's no obvious way.
>>>    - For users who have multiple Java versions installed, this slash &
>>> burn approach is not good.
>>>
>>> For reference, here's how I have my machines configured:
>>>
>>> boxcat$ ls -l /Library/Java/JavaVirtualMachines/
>>> total 24
>>> lrwxr-xr-x  1 root  wheel   15 24 Nov 22:31 java7 -> jdk1.7.0_71.jdk
>>> lrwxr-xr-x  1 root  wheel   15 14 Nov 22:03 java8 -> jdk1.8.0_25.jdk
>>> lrwxr-xr-x  1 root  wheel   12  4 Dec 16:03 java9 -> jdk1.9.0.jdk
>>> drwxr-xr-x  3 root  wheel  102 14 Nov 20:24 jdk1.7.0_71.jdk
>>> drwxr-xr-x  4 root  wheel  136 14 Nov 22:03 jdk1.8.0_05.jdk
>>> drwxr-xr-x  3 root  wheel  102 14 Nov 22:02 jdk1.8.0_25.jdk
>>> drwxr-xr-x  3 root  wheel  102  1 Dec 19:09 jdk1.9.0.jdk
>>>
>>> I then use lines like this in .bash_profile to control which Java I
>>> start:
>>>
>>> boxcat$ cat ~/.bash_profile
>>> #JAVA_HOME=/Library/Java/JavaVirtualMachines/java9/Contents/Home
>>> JAVA_HOME=/Library/Java/JavaVirtualMachines/java8/Contents/Home
>>> #JAVA_HOME=/Library/Java/JavaVirtualMachines/java7/Contents/Home
>>>
>>> M2_HOME=/opt/maven
>>> MONGO_HOME=/opt/mongodb
>>> ATLAS_HOME=/opt/atlassian-plugin-sdk
>>>
>>> EDITOR=vi
>>>
>>> PATH=$JAVA_HOME/bin:$M2_HOME/bin:$ATLAS_HOME/bin:$MONGO_HOME/bin:$PATH
>>>
>>> export EDITOR JAVA_HOME M2_HOME ATLAS_HOME
>>>
>>> It would be great if the .dmg installer was able to respect JAVA_HOME
>>>
>>> Moving on, I then hit some other snags:
>>>
>>> * NetBeans doesn't work out of the box - due to MaxPermSize & MaxSize
>>> options being fatal errors in 9
>>>
>>> * After editing the NB start script to remove those switches, NB will
>>> start, but is basically useless as an IDE, as it can't find java.lang
>>> - presumably b/c it's expecting rt.jat
>>>
>>> * Something has also broken C&P in this configuration - can't copy
>>> text out of NB properly
>>>
>>> Will continue to explore & report back.
>>>
>>> Thanks,
>>>
>>> Ben
>>>
>>> On Tue, Dec 9, 2014 at 8:42 AM, Rory O'Donnell <rory.odonnell at oracle.com>
>>> wrote:
>>>>
>>>> Hi All,
>>>>
>>>> The initial changesets for JEP 220: Modular Run-Time Images [1] are
>>>> available
>>>> with JDK 9 early-access build 41 [2].
>>>>
>>>> To summarize (please see the JEP for details):
>>>>
>>>>      - The "jre" subdirectory is no longer present in JDK images.
>>>>
>>>>      - The user-editable configuration files in the "lib" subdirectory
>>>>         have been moved to the new "conf" directory.
>>>>
>>>>      - The endorsed-standards override mechanism has been removed.
>>>>
>>>>      - The extension mechanism has been removed.
>>>>
>>>>      - rt.jar, tools.jar, and dt.jar have been removed.
>>>>
>>>>      - A new URI scheme for naming stored modules, classes, and
>>>> resources
>>>>         has been defined.
>>>>
>>>>      - For tools that previously accessed rt.jar directly, a built-in
>>>> NIO
>>>>         file-system provider has been defined to provide access to the
>>>> class
>>>>         and resource files within a run-time image.
>>>>
>>>> More details are available at Mark Reinhold's latest blog entry [3]
>>>>
>>>> Rgds, Rory
>>>>
>>>> [1] http://openjdk.java.net/jeps/220
>>>> [2] https://jdk9.java.net/download/
>>>> [3] http://mreinhold.org/blog/jigsaw-modular-images
>>>>
>>>>
>>>>
>>>> --
>>>> Rgds,Rory O'Donnell
>>>> Quality Engineering Manager
>>>> Oracle EMEA , Dublin, Ireland
>>>>
>>
>> --
>> Rgds,Rory O'Donnell
>> Quality Engineering Manager
>> Oracle EMEA , Dublin, Ireland
>>
>