After much research, I can't seem to get to the root of a problem I am having in generating a runnable Scala jar file using Gradle. I'm overriding the 'jar' Gradle task to create a jar file (dependencies included) that executes starting from my main class file. However, whenever I run it, regardless of what I use for a Main-Class attribute, the console throws a "Could not find or load main class" error. Here's what I have so far:
build.gradle
buildscript {
repositories {
mavenCentral()
}
}
apply plugin: 'java'
apply plugin: 'scala'
apply plugin: 'application'
repositories {
mavenCentral()
// some other repos
}
version = '1.0'
sourceCompatibility = 1.8
targetCompatibility = 1.8
mainClassName = "com.test.Main"
dependencies {
// my dependencies
}
jar {
zip64 = true
manifest {
attributes "Main-Class": "$mainClassName"
}
from {
configurations.compile.collect { it.isDirectory() ? it : zipTree(it) }
}
}
src/main/scala/com/test/Main.scala
package com.test
object Main {
def main(args: Array[String]): Unit = {
print("Hello world");
}
}
In fact, when I run "java tf test.jar", it shows "com/test/Main.class" in the root of the jar! Am I missing some important class path info or something? I'm running Java 1.8 on macOS Sierra using Gradle 3.5. Any help is appreciated. Thanks!