I want to design my UML diagrams in a program, and have the program generate Java classes and Hibernate mappings.

Java to UML generator on Linux is similar but does not fulfill all my requirements.

Required features:

  1. Essentially drawing a class diagram and the program should generate the classes in Java.
  2. Support UML 1.x or 2.x
  3. The program must generate *.java files that work in Java 1.5.
  4. The program generate *.hbm.xml files that work in Hibernate 4.
  5. Must run in Windows or Linux (both is a plus).

Optional features:

  1. Can export in other languages (like C# for example).

I tested modelio but it is not for me.

  • 1
    If you have a lot of money - you could look at IBM Rational Software Architect with it's vast modelling and codegeneration abilities. May 1, 2014 at 16:15
  • Eclipse has a UML plugin/extension that will generate code from your diagram
    – ivanivan
    Jun 24, 2018 at 15:11

2 Answers 2


I suggest to use StarUML.

StarUML is an open source project to develop fast, flexible, extensible, featureful, and freely-available UML/MDA platform running on Win32 platform (from: old project of StarUML, this project has been discontinued). Although that project has been discontinued, StarUML starts a new project (since long time no updates) with StarUML 2.

The newer version of StarUML almost fulfills your requirements below:

  • You can draw a class diagram and generate the classes in Java using extension.
  • Compatible with UML 2.x standard and supports totally 11 kinds of UML diagrams. So, it must be different with UML 1.x.
  • The program can generate classes in *.java, but it based on Java 1.7 specification
  • The program can't generate *.hbm.xml.
  • Running on Windows and Linux, even Mac OS X.
  • (optional) you can generate source code not only for Java but also C# / C++.

My answer can't fulfill your requirements. At least, it almost fulfills your needs. I hope my suggestion will help you.


There is a new, advanced Java code generator for StarUML, that also supports Hibernate (annotations), as well as Spring to a certain extent. For more information, you can visit https://www.archetypesoftware.com/.

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