build.gradle

plugins {
    id 'java'
    id 'application'
}

group 'tk.antoineroux'
version '1.0.0-SNAPSHOT'
mainClassName = gradle.mainClass

repositories {
    mavenCentral()
}
sourceSets {
    main {
        java {
            srcDirs = ['src/main/java']
        }
    }
}
jar {
    manifest {
        attributes["Main-Class"] = 'tk.antoineroux.Main'
    }
}

dependencies {
    testImplementation 'org.junit.jupiter:junit-jupiter-api:5.8.2'
    testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.8.2'
}
test {
    useJUnitPlatform()
}

tasks.register('uberJar', Jar) {
    archiveClassifier = 'uber'
    manifest {
        attributes["Main-Class"] = gradle.mainClass
    }

    from sourceSets.main.output

    dependsOn configurations.runtimeClasspath
    from {
        configurations.runtimeClasspath.findAll { it.name.endsWith('jar') }.collect { zipTree(it) }
    }
}