HOWTO use Intelij with Java labs

The project uses gradle 5.4.1 (see Dockerfile FROM) and you just need to let Intelij know where to get the correct version of gradle. One way is to create a file called gradle/wrapper/gradle-wrapper.properties with the following content:

distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-bin.zip
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists

Also make sure jdk/jvm 1.8 is selected in the project

and

If all set correct, you can see Intelij compile and index the project:

Oh, I wish I saw this before battling gradle myself :D.