'How to disable Kotlin compiler in IntelliJ IDEA for Maven Java projects?

I have a Java only multi module Maven project in IntelliJ IDEA and I can see IDEA calling a Kotlin compiler whenever I rebuild a module or choose to run all tests. This is shown in the background processes bar. It sometimes shows Kotlin: connecting to daemon as well which seems to take quite some time. Is there a way to tell IDEA to ignore Kotlin completely for a certain project? I guess the build times could speed up a little bit that way. I know I can disable the Kotlin plugin but that's not what I want as it would be disabled for all projects.

javamavenkotlinintellij-idea


Solution 1:[1]

I tried to disable the plugin of Kotlin, and restart IDEA, and it is solved, even I continue using Gradle. Community 2019.3.

Solution 2:[2]

Intellij provides 2 different settings. Project wise setting and global settings.

You can see the project specific settings by "right click the project" and select "Open Module Settings" as Below -

Module Settings

This will open Project Settings window. You can select kotlin and remove there in the below screen.

Project Settings

Solution 3:[3]

If you are using Maven for build manager, you might be using Koltin plugin to build the project.

The plugin name is org.jetbrains.kotlin:kotlin-maven-plugin.

<build>
    <sourceDirectory>${project.basedir}/src/main/kotlin</sourceDirectory>
    <testSourceDirectory>${project.basedir}/src/test/kotlin</testSourceDirectory>
    <plugins>
      <plugin>
        <groupId>org.jetbrains.kotlin</groupId>
        <artifactId>kotlin-maven-plugin</artifactId>
        <configuration>
          <compilerPlugins>
            <plugin>jpa</plugin>
          </compilerPlugins>
          <args>
            <arg>-Xjsr305=strict</arg>
          </args>
        </configuration>
        <dependencies>
          <dependency>
            <groupId>org.jetbrains.kotlin</groupId>
            <artifactId>kotlin-maven-noarg</artifactId>
            <version>${kotlin.version}</version>
          </dependency>
          <dependency>
            <groupId>org.jetbrains.kotlin</groupId>
            <artifactId>kotlin-maven-allopen</artifactId>
            <version>${kotlin.version}</version>
          </dependency>
        </dependencies>
      </plugin>
    </plugins>
  </build>

You just need to delete it!

Sources

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Source: Stack Overflow

Solution Source
Solution 1 WesternGun
Solution 2 Rajkumar Natarajan
Solution 3 Pemassi

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