jmonkeyengine/jme3-core/build.gradle

if (!hasProperty('mainClass')) {
    ext.mainClass = ''
}

sourceSets {
    main {
        java {
            srcDir 'src/main/java'
            srcDir 'src/plugins/java'
            srcDir 'src/tools/java'
        }
    }
    test {
        java {
            srcDir 'src/test/java'
        }
    }
}

task updateVersionPropertiesFile {
    def versionFile = file('src/main/resources/com/jme3/system/version.properties')
    def versionFileText = "# THIS IS AN AUTO-GENERATED FILE..\n" +
                          "# DO NOT MODIFY!\n" +
                          "build.date=${jmeBuildDate}\n" +
                          "git.revision=${jmeRevision}\n" +
                          "git.branch=${jmeBranchName}\n" +
                          "git.hash=${jmeGitHash}\n" +
                          "git.hash.short=${jmeShortGitHash}\n" +
                          "git.tag=${jmeGitTag}\n" +
                          "name.full=jMonkeyEngine ${jmeFullVersion}\n" +
                          "version.full=${jmeFullVersion}\n" +
                          "version.number=${jmeVersion}\n" +
                          "version.tag=${jmeVersionTag}"

    outputs.upToDateWhen { 
        versionFile.exists() && versionFile.text == versionFileText
    }
    doLast {
        versionFile.text = versionFileText
    }
}

processResources.dependsOn updateVersionPropertiesFile