I'd like to start adding some Kotlin to my Java project. To do that I need to be able to compile both Java and Kotlin files from the command line, which is fine apart from when files of different types depend on each other e.g. A.java depends on B.kt which in turn depends on C.java.
Is there any way to do this without using Gradle, Maven etc?
Edited to clarify thanks @Nikita for pointing out it is not clear that I want both java and Kotlin files in the same source tree
To achieve this, you will need to run two steps.
kotlinc targeting *.kt files. Add all required java sources on classpath. Note the destination location.javac targeting *.java files. Add *.class files created by step 1 to classpath.Result is a combination of *.class files from both steps.
Here is a documetation on Kotlin compiler
kotlinc src/**/*.kt -classpath src/**/*.java -d dist then I get an error like: error: source entry is not a Kotlin file: src/java/SomethingElse.java. What does seem to work is kotlinc src/**/ -d dist followed by javac
Remember to compile Kotlin first, then compile Java with kotlin-build-classpath from first step.
simple like this:
1. kotlinc ./src/* -d ./buildTmp
2. javac ./src/**.java -d ./buildTmp -classpath ./buildTmp
Try this https://discuss.kotlinlang.org/t/compiling-mixed-java-and-kotlin-files-on-the-command-line/1553/2
e.g.
kotlinc kotlinSource.kt JavaSource.java -d run.jar
