Gradle - Could not find or load main class

Question

I\'m trying to run a very simple project using Gradle and running into the following error when using the gradlew run command:

could not find or l

Answer 1

I see two problems here, one with sourceSet another with mainClassName.

1. Either move java source files to src/main/java instead of just src. Or set sourceSet properly by adding the following to build.gradle.

   sourceSets.main.java.srcDirs = ['src']
   

2. mainClassName should be fully qualified class name, not path.

   mainClassName = "hello.HelloWorld"