runClient in intelliJ using gradle gives error "Unrecognised option -p"; "Error: Could not create the Java Virtual Machine."

[ethorad]

I did some modding a while ago with version 1.15 and 1.16 using gradle and intelliJ and it was working fine.

Was about to do some more so I downloaded the latest mdk from forge (for minecraft 1.18.2-40.1.0) and used that as the template to start making a mod.  All I've done so far is give it a name and then try to run it to test I've downloaded it OK.  When I click the runClient green arrow in intelliJ it gives the error message:

Unrecognized option: -p
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

I'm using jdk1.8.0_311 as that was what tutorials told me to use when modding 1.15 / 1.16.  However it looks like the latest jdk is jdk18 so jdk1.8 looks very out of date!  Is this the issue, so should I just download and install the new jdk?  Or is a different version between the two needed?  And if I do download a new jdk does anything in gradle / intelliJ need updating to point it at the new jdk?

Or is something else going wrong?

Thanks!

 

Full error message is below:

"C:\Program Files\Java\jdk1.8.0_311\bin\java.exe" -Dforge.logging.console.level=debug -Dforge.logging.markers=REGISTRIES "-DlegacyClassPath.file=C:\Users\donal\Documents\Minecraft Mods\StarCraft v1\build\classpath\runClient_minecraftClasspath.txt" -DignoreList=bootstraplauncher,securejarhandler,asm-commons,asm-util,asm-analysis,asm-tree,asm,client-extra,fmlcore,javafmllanguage,mclanguage,forge- "-DnativesDirectory=C:\Users\donal\Documents\Minecraft Mods\StarCraft v1\build\natives" -DmergeModules=jna-5.10.0.jar,jna-platform-5.10.0.jar,java-objc-bridge-1.0.0.jar -Dforge.enabledGameTestNamespaces=examplemod -Dforge.enableGameTest=true -p C:\Users\donal\.gradle\caches\modules-2\files-2.1\cpw.mods\bootstraplauncher\1.0.0\f55ddbb35612c6745cefc47d1a0d6dbfb25d3982\bootstraplauncher-1.0.0.jar;C:\Users\donal\.gradle\caches\modules-2\files-2.1\cpw.mods\securejarhandler\1.0.3\acbf5e3c8a38fb8bf824a54fe45eee121c510392\securejarhandler-1.0.3.jar;C:\Users\donal\.gradle\caches\modules-2\files-2.1\org.ow2.asm\asm-commons\9.2\f4d7f0fc9054386f2893b602454d48e07d4fbead\asm-commons-9.2.jar;C:\Users\donal\.gradle\caches\modules-2\files-2.1\org.ow2.asm\asm-util\9.2\fbc178fc5ba3dab50fd7e8a5317b8b647c8e8946\asm-util-9.2.jar;C:\Users\donal\.gradle\caches\modules-2\files-2.1\org.ow2.asm\asm-analysis\9.2\7487dd756daf96cab9986e44b9d7bcb796a61c10\asm-analysis-9.2.jar;C:\Users\donal\.gradle\caches\modules-2\files-2.1\org.ow2.asm\asm-tree\9.2\d96c99a30f5e1a19b0e609dbb19a44d8518ac01e\asm-tree-9.2.jar;C:\Users\donal\.gradle\caches\modules-2\files-2.1\org.ow2.asm\asm\9.2\81a03f76019c67362299c40e0ba13405f5467bff\asm-9.2.jar --add-modules ALL-MODULE-PATH --add-opens java.base/java.util.jar=cpw.mods.securejarhandler --add-exports java.base/sun.security.util=cpw.mods.securejarhandler --add-exports jdk.naming.dns/com.sun.jndi.dns=java.naming -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump "-Dos.name=Windows 10" -Dos.version=10.0 "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2021.3.1\lib\idea_rt.jar=55520:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2021.3.1\bin" -Dfile.encoding=UTF-8 -classpath "C:\Program Files\Java\jdk1.8.0_311\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_311\jre\lib\rt.jar;C:\Users\donal\Documents\Minecraft Mods\StarCraft v1\build\classes\java\main;C:\Users\donal\Documents\Minecraft Mods\StarCraft 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cpw.mods.bootstraplauncher.BootstrapLauncher --launchTarget forgeclientuserdev --version MOD_DEV --assetIndex 1.18 --assetsDir C:\Users\donal\.gradle\caches\forge_gradle\assets --gameDir . --fml.forgeVersion 40.1.0 --fml.mcVersion 1.18.2 --fml.forgeGroup net.minecraftforge --fml.mcpVersion 20220404.173914
Unrecognized option: -p
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

Process finished with exit code 1

[warjort]

Yes Minecraft 1.18+ requires java 17+

https://docs.minecraftforge.net/en/1.18.x/gettingstarted/

Edited July 13, 2022 by warjort

[warjort]

NOTE: If you are going to use java 18 for development, make sure you have something like the following in your build.gradle

Quote

    tasks.withType(JavaCompile).configureEach {
        it.options.release = 17
    }
 

which will tell it to compile code for java 17 not 18 - you want users who only have java 17 to be able to run your code.

[ethorad]

Awesome, thanks for the fast response.  It's working now

For reference, I downloaded JDK 17 so that I wouldn't have to work out where/how to add the code snippet you provided to build.gradle.  I also had a poke around intelliJ to make sure it was going to reference the new version of JDK.  Not sure if any of this was strictly required, but thought I'd note what I did in case it's useful for anyone else.

File -> Settings -> Build, Execution, Deployment -> Gradle.  Under the project I had open, there was an option for Gradle JVM.  I changed that from "Project SDK 1.8" to "17 Oracle Open JDK version 17.0.3".

On the dropdown for configurations, I selected "Edit Configurations".  Then, under RunClient (as that's the one I'm using), under Build and Run the first drop down box is for the version of java.  I changed this from "8 SDK of modname.main module" to the path of the new JDK 17 installation.

Then, clicking the green arrow for RunClient works.

Thanks again