Just a quick question. I have a Spring boot crud application and need to generate a class diagram for it. Is that posible to generate one using eclipse. I tryed to research this topic but nothin found. Some are not maintained some simply don't work. I use latest 2021-09 eclipse for Java Enterprice.
UPDATE: I tryed to use plant uml. It generates somethin, but one by one can I generate the diagram just in once for whole project. Like it is done in Visual Studio for example?
visit How to generate UML diagrams (especially sequence diagrams) from Java code?
Take a look at this one here (Your question is already answered)
I am currently doing a project to convert uml diagrams to java code,in one of the step I have to create an ast for general activity diagram and write a java code for the ast. The problem is I am not sure how to represent it in java code to accept any activity diagram as an input. Please need some help.
This is the meta-model of a general activity diagram, I want to represent this diagram as a java code to accept inputs.
Activity Diagram Metamodel
The first diagram on the second page of the pdf
What tool are you using to create your activity diagrams? Most will provide an API to query models and/or an XMI export*. In either case you don't get an AST as such, more an Object structure of your model. But it's still pretty easy to iterate that structure and generate code.
One option worth considering is the Eclipse Modeling Framework (EMF). There are tools available for both creating diagrams (e.g. Papyrus) and a multitude of options for generating code from models (e.g. Acceleo) - have a look at the 'Model to Text' (M2T) sub-project.
Even if you decide to use another tool for diagram creation, it's possible to use Eclipse M2T for code generation; most tools will export XMI in the eclipse dialect.
hth.
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*XMI is the 'standard' for UML model interchange. It was plagued with inconsistency in interpretation originally, and there are still some problems among tools today. However: it is an XML dialect so even if tool B can't directly import XMI from tool A, it's usually possible to convert between the two.
Does such program exist?
I have to study Java SE and diagram with all classes and interfaces from given package will be immensely helpful.
For example I want to plot all relations between subclasses of types Collection and Map.
I know there are a lot of images with core package structure already, but don't really trust them because they are proven to be incomplete, outdated or even inaccurate.
Whilst I don't know of any tools for generating UML class diagrams from JavaDocs, there are many tools available that can generate UML class diagrams from source code, and there are already many questions on StackOverflow that suggest various tools that can do this
This question seems to have a good range of options that you could explore. I've used ArgoUML myself, but I suggest looking at the options to find the one what appeals to you most.
You can download the Java SE source code and generate the class diagrams for the sections you're interested in.
You can create RCP application using ZEST. This is pretty cool
You can not create diagrams from JavaDoc because there is no official implementation. Only Java code could be reversed and displayed as class or sequence diagrams.
I played to reverse the full Java language with EclipseUML Omondo. It was really interesting to get all dependencies, inheritances, associations at package but also at project level, or even at multi-projects level.
The trick Omondo use is to convert manually each Java Id to a single UML Id. You get after a 30 mn process a huge model composed by hundred of thousands UML Ids saved in an XMI format respecting java project structure. I mean you get project > packages > class> iner classes > attrbites etc...
From this model then you create views by drag and drop or directly selecting the entire package. You can show hide relations, navigate in the code at graphical level etc.....
Really amazing technology !!
I'm in the need of a eclipse plugin / or tool which can generate
class diagrams from my java/groovy code and vice versa. Actually it is a
groovy/grails project. The actual requirements are:
I should be able to draw class diagram and generate code and generate class diagram
from existing code
(Important) I have to export the generated class diagram in some format to share it
with my teammates, so they can generate code from it.
Please suggest me a good solution.
Thanks in advance.
You can use visual paradigm for uml. Using Visual Paradign you generate UML diagrams of your and generate code, using UML diagrams
You can create diagrams, share it on CVS or by email but it is only possible with the java code. I don't think it exist for both groovy and java.
You have two options today which is to use a live code and model synchronization tool which is more integration level or a model driven tool which will generate all the code once the model has been completed.
I personally prefer the first live synchronization option because if the code is updated then my model will also be. It is painful to produce diagrams and then realize that at the implementation stage the development team has changed the code and that my diagrams are not anymore relevant !!
How can I generate UML diagrams (especially sequence diagrams) from existing Java code?
ObjectAid UML Explorer
Is what I used. It is easily installed from the repository:
Name: ObjectAid UML Explorer
Location: http://www.objectaid.com/update/current
And produces quite nice UML diagrams:
Description from the website:
The ObjectAid UML Explorer is different from other UML tools. It uses
the UML notation to show a graphical representation of existing code
that is as accurate and up-to-date as your text editor, while being
very easy to use. Several unique features make this possible:
Your source code and libraries are the model that is displayed, they are not reverse engineered into a different format.
If you update your code in Eclipse, your diagram is updated as well; there is no need to reverse engineer source code.
Refactoring updates your diagram as well as your source code. When you rename a field or move a class, your diagram simply reflects the
changes without going out of sync.
All diagrams in your Eclipse workspace are updated with refactoring changes as appropriate. If necessary, they are checked out of your
version control system.
Diagrams are fully integrated into the Eclipse IDE. You can drag Java classes from any other view onto the diagram, and diagram-related
information is shown in other views wherever applicable.
EDIT:
If you're a designer then Papyrus is your best choice it's very advanced and full of features, but if you just want to sketch out some UML diagrams and easy installation then ObjectAid is pretty cool and it doesn't require any plugins I just installed it over Eclipse-Java EE and works great !.
UPDATE Oct 11th, 2013
My original post was in June 2012 a lot of things have changed many tools has grown and others didn't. Since I'm going back to do some modeling and also getting some replies to the post I decided to install papyrus again and will investigate other possible UML modeling solutions again. UML generation (with synchronization feature) is really important not to software designer but to the average developer.
I wish papyrus had straightforward way to Reverse Engineer classes into UML class diagram and It would be super cool if that reverse engineering had a synchronization feature, but unfortunately papyrus project is full of features and I think developers there have already much at hand since also many actions you do over papyrus might not give you any response and just nothing happens but that's out of this question scope anyway.
The Answer (Oct 11th, 2013)
Tools
Download Papyrus
Go to Help -> Install New Software...
In the Work with: drop-down, select --All Available Sites--
In the filter, type in Papyrus
After installation finishes restart Eclipse
Repeat steps 1-3 and this time, install Modisco
Steps
In your java project (assume it's called MyProject) create a folder e.g UML
Right click over the project name -> Discovery -> Discoverer -> Discover Java and inventory model from java project, a file called MyProject_kdm.xmi will be generated.
Right click project name file --> new --> papyrus model -> and call it MyProject.
Move the three generated files MyProject.di , MyProject.notation, MyProject.uml to the UML folder
Right click on MyProject_kdm.xmi -> Discovery -> Discoverer -> Discover UML model from KDM code again you'll get a property dialog set the serialization prop to TRUE to generate a file named MyProject.uml
Move generated MyProject.uml which was generated at root, to UML folder, Eclipse will ask you If you wanted to replace it click yes. What we did in here was that we replaced an empty model with a generated one.
ALT+W -> show view -> papyrus -> model explorer
In that view, you'll find your classes like in the picture
In the view Right click root model -> New diagram
Then start grabbing classes to the diagram from the view
Some features
To show the class elements (variables, functions etc) Right click on any class -> Filters -> show/hide contents Voila !!
You can have default friendly color settings from Window -> pereferences -> papyrus -> class diagram
one very important setting is Arrange when you drop the classes they get a cramped right click on any empty space at a class diagram and click Arrange All
Arrows in the model explorer view can be grabbed to the diagram to show generalization, realization etc
After all of that your settings will show diagrams like
Synchronization isn't available as far as I know you'll need to manually import any new classes.
That's all, And don't buy commercial products unless you really need it, papyrus is actually great and sophisticated instead donate or something.
Disclaimer: I've no relation to the papyrus people, in fact, I didn't like papyrus at first until I did lots of research and experienced it with some patience. And will get back to this post again when I try other free tools.
What is your codebase? Java or C++?
eUML2 for Java is a powerful UML modeler designed for Java developper
in Eclipse. The free edition can be used for commercial use. It
supports the following features:
CVS and Team Support
Designed for large project with multiple and customizable model views
Helios Compliant
Real-time code/model synchronization
UML2.1 compliant and support of OMG XMI
JDK 1.4 and 1.5 support
The commercial edition provides:
Advanced reversed engineering
Powerful true dependency analyze tools
UML Profile and MDD
Database tools
Customizable template support
I am one of the authors, so the answer can be biased. It is open-source (Apache 2.0), but the plugin is not free. You don't have to pay (obviously) if you clone and build it locally.
On Intellij IDEA, ZenUML can generate sequence diagram from Java code.
Check it out at https://plugins.jetbrains.com/plugin/12437-zenuml-support
Source code: https://github.com/ZenUml/jetbrains-zenuml
How about PlantUML?
It's not for reverse engineering!!! It's for engineering before you code.
I developed a maven plugin that can both, be run from CLI as a plugin goal, or import as dependency and programmatically use the parser, #see Main#main() to get the idea on how.
It renders PlantUML src code of desired packages recursively that you can edit manually if needed (hopefully you won't). Then, by pasting the code in the plantUML page, or by downloading plant's jar you can render the UML diagram as a png image.
Check it out here https://github.com/juanmf/Java2PlantUML
Example output diagram:
Any contribution is more than welcome. It has a set of filters that customize output but I didn't expose these yet in the plugin CLI params.
It's important to note that it's not limited to your *.java files, it can render UML diagrams src from you maven dependencies as well. This is very handy to understand libraries you depend on. It actually inspects compiled classes with reflection so no source needed
Be the 1st to star it at GitHub :P
I would recommend EclipseUML from Omondo for general usage, although I did experience some problems a few months back, with my web projects. They had a free edition at one point in time, but that is supposedly no longer promoted.
If you are really keen on reverse engineering sequence diagrams from source code, I would recommend jTracert.
As far as Eclipse projects themselves are concerned, the Eclipse UML2 Tools project might support reverse engineering, although I've have never seen its use in practice.
The MoDisco (Model Discovery) project Eclipse GMT project seems to be clearer in achieving your objective. The list of technology specific tools would be a good place to start with.
I found Green plugin very simple to use and to generate class diagram from source code.
Give it a try :).
Just copy the plugin to your plugin dir.
Using IntelliJ IDEA. To generate class diagram select package and press Ctrl + Alt + U:
By default, it displays only class names and not all dependencies. To change it: right click -> Show Categories... and Show dependencies:
To genarate dependencies diagram (UML Deployment diagram) and you use maven go View -> Tool Windows -> Maven Projects and press Ctrl + Alt + U:
The result:
Also it is possible to generate more others diagrams. See documentation.
You could also give the netbeans UML modeller a try. I have used it to generate javacode that I used in my eclipse projects. You can even import eclipse projects in netbeans and keep the eclipse settings synced with the netbeans project settings.
I tried several UML modellers for eclipse and wasn't satisfied with them. They were either unstable, complicated or just plain ugly. ;-)
You can use the 30 days evaluation build of EclipseUML for Eclipse 3.5 : http://www.uml2.org/eclipse-java-galileo-SR2-win32_eclipseUML2.2_package_may2010.zip
This is not the latest 3.6 build, but is pretty good and don't require you purchase it for testing and reverse engineering.
Reverse engineering : http://www.forum-omondo.com/documentation_eclipseuml_2008/reverse/reverse/reverse_engineering_example.html
Live flash demo: http://www.ejb3.org/reverse.swf
EclipseUML Omondo is the best tool in the world for Java. Only eUML seems to compete with it on this live java synchronization market, but eUML adds model tags in the code which is really very very bad and a definitive no go for me.
I've noticed SequenceDiagram plugin for Intellij is also a good option.
By far the best tool I have used for reverse engineering, and round tripping java -> UML is Borland's Together. It is based on Eclipse (not just a single plugin) and really works well.
Another modelling tool for Java is (my) website GitUML.
Generate UML diagrams from Java or Python code stored in GitHub repositories.
One key idea with GitUML is to address one of the problems with "documentation": that diagrams are always out of date. With GitUML, diagrams automatically update when you push code using git.
Browse through community UML diagrams, there are some Java design patterns there. Surf through popular GitHub repositories and visualise the architectures and patterns in them.
Create diagrams using point and click. There is no drag drop editor, just click on the classes in the repository tree that you want to visualise:
The underlying technology is PlantUML based, which means you can refine your diagrams with additional PlantUML markup.
There is a Free tool named binarydoc which can generate UML Sequence Diagram, or Control Flow Graph (CFG) from the bytecode (instead of source code) of a Java method.
Here is an sample diagram binarydoc generated for the java method java.net.AbstractPlainSocketImpl.getInputStream:
Control Flow Graph of method java.net.AbstractPlainSocketImpl.getInputStream:
UML Sequence Diagram of method java.net.AbstractPlainSocketImpl.getInputStream:
I suggest PlantUML. this tools is very usefull and easy to use. PlantUML have a plugin for Netbeans that you can create UML diagram from your java code.
you can install PlantUML plugin in the netbeans by this method:
Netbeans Menu -> Tools -> Plugin
Now select Available Plugins and then find PlantUML and install it.
For more information go to website: www.plantuml.com