Error when trying to use 'gradlew' wrapper file - is the Gradle wrapper jar file, missing?

[sixman9]

I can't get your 'hello-world-scala' example to work, out of the box. When I try to execute ./gradlew tasks I get the following error :

Error: Could not find or load main class org.gradle.wrapper.GradleWrapperMain

You might not have checked in the corresponding Gradle wrapper JAR file (gradle-wrapper.jar) as mentioned within the gradlew executable script, itself (see $APP_HOME/gradle/wrapper/gradle-wrapper.jar). This might be because you didn't stage it in Git or have a '.gitignore' file which ignores JAR files (also, the file appears to be missing in all sub-projects).

This topic is discussed in the Stackoverflow post

In the meanwhile, adding the following to a local copy of build.gradle and executing gradle wrapper a local, installed version of Gradle, on my PATH, should be sufficient to get this working:

task wrapper(type: Wrapper) {
    gradleVersion = '2.12'
}

JFYI, I'm on Mac OSX (El Capitan 10.11.2, Java 1.8.0_45-b14)

BTW, thanks for the code.

[RichardHightower]

Thanks. You can send a PR with your change to the gradle.build if you want and then i will close this with the PR. Thanks again. You Rock!