Java 8 compatibility

[jetbrains]

Java 8 compatibility

[jplaisted]

You could try changing your JAVA_HOME for just that terminal that is building that project. Won't impact your entire system. Still a bit of a pain, but it works.

Add scripts in your home directory to change JAVA_HOME so you can easily switch. That's what I ended up with.

[hurricup]

Looks like you need to run gradle with Java 11.
FYI: Idea migrated to Java 11, so there is a little sense to stay on 8

[jplaisted]

Yeah, that was it, thanks. Forced my Java version to 11 and it builds now. Thanks!

[megantracy93]

I am running into the same issue. I have several other projects that rely on java 8 so I'd rather not force my java version to java 11 everywhere. As specified in the gradle docs, is there a way to override the java home for the grammarkit tasks? https://docs.gradle.org/6.7/userguide/toolchains.html#integration_with_tasks_relying_on_a_java_executable_or_java_home Or is there a possibility of releasing an updated plugin here that sets the java version to java 11?

[hurricup]

@megantracy93 you may use previous versions of plugin and/or grammar-kit with java 8 support.

[megantracy93]

@hurricup I am trying to upgrade my plugin to work against IntelliJ 2020.3 which requires java 11 to work: https://jetbrains.org/intellij/sdk/docs/reference_guide/api_notable/api_notable_list_2020.html#notable-changes-in-intellij-platform-20203

[hurricup]

Sorry, I'm not quite sure I understand what is your problem.
As I understand, you don't want to change JAVA_HOME on your machine to use jdk11.
But you still can choose any sdk for your project and/or gradle in IDEA.

[megantracy93]

Correct, I don't want to change my JAVA_HOME. I also would rather not have to configure it in IDEA as I prefer to run gradle commands from the terminal and I need to be able to build my plugin from a CI environment which uses a terminal as well. So, I need a way to configure the java version in the gradle configuration itself. I see the grammarkit plugin is currently configured to request java 8 - would it just be as simple as updating that to java 11 and releasing a new version with that?

[hurricup]

No, this only means that plugin may be used with java 8 or older.
Your problem it's more about how to configure gradle to use different java's to run, not about this plugin.

Probably this may help you: https://stackoverflow.com/questions/18487406/how-do-i-tell-gradle-to-use-specific-jdk-version

Or google :)