[External] : RE: A new build and a new structured concurrency API

[Eric Kolotyluk]

[image: image.png]

[image: image.png]

Hard to say if it's the version of IntelliJ, or trying to get all the right
combination of Settings and Project Structure correct.

Cheers, Eric


On Mon, Nov 15, 2021 at 7:45 PM Chris Plummer <chris.plummer at oracle.com>
wrote:

> java: invalid source release 17 with --enable-preview
>   (preview language features are only supported for release 18)
>
> Yeah, I think my version is a bit old, and that may be working out to may
> advantage right now. Max version it knows about is 17, but that doesn't
> prevent me from setting the Project SDK to my JDK 18 build. What is the
> latest version you can choose from "Project language level"?
>
> I will also point out that I very frequently (over the past 2 years) have
> had java versioning related issues with Intellij when either the JDK moves
> to a new version or I have upgraded Intellij. It's done weird things like
> build against the default JDK libraries rather than the Project SDK. Often
> I've had to clear out Intellij settings and start from scratch with a clean
> install, and usually I have to use the beta version of Intellij. Right now
> I'm on 2021.2 Beta built on July 13, 2021.
>
> Chris
>
>
> On 11/15/21 7:33 PM, Eric Kolotyluk wrote:
>
> I always run from IntelliJ because it's easier.
> [image: image.png]
>
> Normally I "Run" from the source tree, but IntelliJ seems broken now, so I
> reported it as a defect to JetBrains.
>
> In this case, laboratory.jar is an uber-jar created via the shade-plugin,
> and generated by clicking the "package" goal in the Maven Lifecycle tab on
> the right-hand side of the IntelliJ GUI. In this case, in the IntelliJ
> Run->Edit Configurations... I edited the configuration under JAR
> Application to put the "--enable-preview" in.
>
> It's not as convenient as running from the source tree, but I hate using
> the command line...
>
> When I try using "17 (Preview)"I get...
>
> java: invalid source release 17 with --enable-preview
>   (preview language features are only supported for release 18)
>
> Cheers, Eric
>
>
> On Mon, Nov 15, 2021 at 6:52 PM Chris Plummer <chris.plummer at oracle.com>
> wrote:
>
>> How are you launching your app? I've never launched from Intellij. I only
>> use it to compile and then to attach to an already running program. When
>> launching you also need --enable-preview. If I haven't setup Intellij to do
>> that, I would never have noticed. Trying it now... Yep, similar problem to
>> yours, although for me I get an UnsupportedClassVersionErrror, and it says
>> "Preview features are not enabled for Main. Try running with
>> --enable-preview."
>>
>> I just found a work around. Instead of "X - Experimental Features",
>> choose "17 (Preview)". That seems to get --enabled-previewed added. I've
>> been on "X - Experimental Features" for 2 years now, because at one time it
>> was needed, but all the new APIs got "preview" tags recently, so it looks
>> like "17 (Preview)" works even though we are on 18.
>>
>> Chris
>>
>> On 11/15/21 6:37 PM, Eric Kolotyluk wrote:
>>
>> Yes, I did all those things before, but no luck.
>>
>>
>>
>> So far I used the shade-plugin to build an uber-jar, and on the JAR
>> Application run configuration I have added “--enable-preview” to “VM
>> options:” and that seems to work, but there is nothing I can do in the
>> Application run configuration to make it work.
>>
>>
>>
>> Seems like a defect in IntelliJ somehow...
>>
>>
>>
>> Cheers, Eric
>>
>>
>>
>> *From: *Chris Plummer <chris.plummer at oracle.com>
>> *Sent: *November 15, 2021 6:26 PM
>> *To: *Eric Kolotyluk <eric at kolotyluk.net>; Remi Forax <forax at univ-mlv.fr>;
>> loom-dev <loom-dev at openjdk.java.net>; Ron Pressler
>> <ron.pressler at oracle.com>
>> *Subject: *Re: A new build and a new structured concurrency API
>>
>>
>>
>> Under Settings -> Java Compiler, make sure you add --enable-preview to
>>
>> "Additional command line parameters".
>>
>>
>>
>> Under Project Structure -> Project Settings, make sure you choose "X -
>>
>> Experimental Features". Note my IntelliJ is a bit out of date. I assume
>>
>> at some point "18 (Preview) - Virtual Threads" will be made an option.
>>
>>
>>
>> Chris
>>
>>
>>
>> On 11/15/21 2:59 PM, Eric Kolotyluk wrote:
>>
>> > Okay, my next problem is that IntelliJ keeps complaining
>>
>> >
>>
>> >
>> C:\Users\ERIC\Documents\git\loom-lab\laboratory\src\main\java\net\kolotyluk\loom\Experiment00.java:4:28
>>
>> > java: java.util.concurrent.StructuredExecutor is a preview API and is
>>
>> > disabled by default.
>>
>> >    (use --enable-preview to enable preview APIs)
>>
>> >
>>
>> > But I can find no way to convince IntelliJ to move forward. I have
>> checked
>>
>> > both Setting and Project Structure, and put " --enable-preview "
>> everywhere
>>
>> > I can think of. Is anyone else using IntelliJ with Loom?
>>
>> >
>>
>> > Cheers, Eric
>>
>> >
>>
>> > On Mon, Nov 15, 2021 at 1:52 PM Eric Kolotyluk <eric at kolotyluk.net>
>> <eric at kolotyluk.net> wrote:
>>
>> >
>>
>> >
>>
>>
>>
>>
>>
>