How to use -parameters javac option in intellij?

Question

I have this all working in eclipse and am trying to do so in intellij now. I opened settings {command and comma} then went to Build, Execution and Deployment and clicked Compiler and in Shared Build Process VM Options I typed in "-parameters" but intellij errored out when I built the project with "Unrecognized option: -parameters"

My project is compiling fine in jdk8 and I am using jdk 8 lambdas and other jdk features. I don't get why I can't get my code compiled with parameters build in.

Lengel

Answer 1

The "Shared build process VM options" field, as its name implies, is used to specify the VM options for the shared build process. The shared build process is not javac, and -parameters is not a VM option. Therefore, the option is not recognized.

The correct place to enter the -parameters option is Settings > Build, Execution, Deployment > Compiler > Java Compiler > Additional command line parameters.

Kinship

remember to rebuild your project, or it may not work. – Materialize

@Kinship can you please update the answer? I am using 2018.3 version of IntelliJ and I am unable to find the fore-mentioned settings path. – Iolite

@SaitejaParsi The setting is at exactly the same path in 2018.3. – Kinship

@Kinship I am running 2018.3.5 and also do not see the setting where you described. – Dim

OK, I found it. It's under Preferences > Build, Execution, Deployment > etc. I had been looking for it under the Build menu. I have the compiler flag set in my Gradle script, but IDEA is ignoring it for some reason. – Dim

If you don't have "Delegate IDE build/run actions to Gradle" enabled in Settings | Build, Execution, Deployment | Build Tools | Gradle | Runner, IntelliJ IDEA will build the project using its own compiler, which will not use the build options specified in build.gradle. If you enable this option, the build will run through Gradle and use the options in your build.gradle. – Kinship

Answer 2

If you cannot find an option under Settings > Build, Execution, Deployment > Compiler > Java Compiler (like me in 2021.1.1) you can specify it in your build.gradle file (like here):

tasks.withType(JavaCompile) {
    options.compilerArgs << '-parameters'
}

Aphesis