1 Java Project Manager (1JPM), is a Maven/Gradle alternative with a twist. It's a single Java file itself, which should be edited by you to configure your project. Meaning instead of writing XML (Maven) or Groovy (Gradle), your build file is Java code too. Thus to build your project, download/copy the JPM.java file into your project, open a terminal and execute: Java 11 and above: java JPM.java ja