plugins { id 'java' } allprojects { repositories { mavenCentral() } } task mergeJars(type: Jar) { archiveBaseName = 'EptaList' archiveVersion = '1.1-release' def jarPaths = [ "C:\\Users\\User\\IdeaProjects\\EptaListProject\\velocity\\build\\libs\\velocity-1.0.jar", "C:\\Users\\User\\IdeaProjects\\EptaListProject\\spigot\\build\\libs\\spigot-1.0.jar", "C:\\Users\\User\\IdeaProjects\\EptaListProject\\base\\build\\libs\\base-1.0.jar" ] from jarPaths.collect { zipTree(it) } duplicatesStrategy = DuplicatesStrategy.INCLUDE }