1JPM 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. To be more exact, you download/copy the JPM.java file into your project, open a terminal and execute: Java 11 and above: java JPM.java build Java 8 to 10: javac JPM.java && java -cp . JPM build Earlier Java versions are not supported to ...