freeware for generating diagrams [closed]

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Do you know any nice freeware that will take my java sources and will generate class diagrams from them?

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Last year, I wrote this small tool : java2dot . It generates a file for graphviz dot. See http://plindenbaum.blogspot.com/2008/10/javadoc-is-not-enough-java2dia.html

Hope it helps

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Netbeans has a UML plugin that can reverse engineer class diagrams from Java source.

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Doxygen can do that (with help from Graphviz).

Looks like there's a nice tutorial for installing and configuring it, including details about annotations to use for it, here.

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StarUML

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This may be more than what you asked for, but doxygen use the "dot" tool from graphviz to generate class diagram along the documentation of any java application.

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You can try Fujaba. It supports forward engineering (UML -> Java) and reverse engineering (Java -> UML). Class diagrams are supported.

_{(source: fujaba.de)}

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ArgoUML can create class diagrams from Java. However last time I used it (a fair time back now) it did not do all that great a job at laying it all out.

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TopCoder UML Tool

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If you use maven, one nice way of generating UML from your classes is by generating JavaDocs and adding the UMLGraph doclet. See the following link:

http://maven.apache.org/plugins/maven-javadoc-plugin/examples/alternate-doclet.html

The nice thing about this is that it becomes simple to integrate into a nightly build.

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Slime is a neat small UML plugin for eclipse that can draw class diagrams.

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AmaterasUML is a free eclipse plugin that works pretty well. You can drag and drop classes from the package explorer to the diagram, and export to png.

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ArgoUML is the best free UML tool. MagicDraw is the best commercial UML tool. And IDEs have plugins to create UML diagrams too (Eclipse and Netbeans to name two).

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I use the ObjectAID UML plugin for eclipse. It's a very nice free tool that lets you build UML diagrams that you can navigate.

See also this question for more Eclipse plugins that allow you to do this with UML.