SequenceDiagram

SequenceDiagram for IntelliJ IDEA http://vanco.github.io/SequencePlugin.

with this plugin, you can

generate Simple Sequence Diagram.
Navigate the code by click the diagram shape.
Delete Class from diagram.
Export the diagram as image.
Exclude classes from diagram by Settings > Other Settings > Sequence
Smart Interface(experimental)
Lambda Expression(experimental)

Experimental features

The experimental features are created by myself, which is not part of UML standard. Use this feature in your own risk.

Smart Interface

Find the implementation of the interface smartly. e.g.

public interface Fruit {
    int eat();
}

public class Apple implements Fruit {
    @Override
    public int eat() {
        return 5;
    }
}

Apple implemented the Fruit interface. When we generate sequence diagram for the eatFruit method:

public class People {
    
    private Fruit fruit = new Apple();

    public void eatFruit() {
        fruit.eat();
    }
}

I draw dummy implementation call in dash line.

For the interface or abstract class, if there is only one implementation found, it will draw in diagram automatically. More than one implementations, you need to choose one to draw. this is an option in settings.

Lambda Expression

No standard for the lambda expression in the sequence diagram yet. So I create mine. e.g.

public interface Service<Int, String> {

    String invoke(Int a);
}

And I need draw the sequence diagram for hello method:

public class Lambda {

    public Service<Integer, String> hello() {
        return a -> {
            Fruit fruit = new Apple();
            fruit.eat();
            return "I'm good!";
        };
    }
}

I draw a dummy λ→ self call in diagram.

How to use

SequenceDiagram ONLY generate sequence diagram for the CURRENT method of JAVA file in the editor.

When installed, where to find it?

Open a JAVA file in editor.
Navigate to one Method, which you want to generate sequence diagram. (See the screenshot bellow)
From the Tools > Sequence Diagram... menu.

Place the cursor inside the method, trigger it from Tools menu or context menu > Sequence Diagram...

Version History

Current Verison 2.0

versions:

2.0: Support new IDEA 2020.x Dynamic Plugins. fix issue #47, #50
1.3: Lambda Expression. #38
1.2: new feature: Smart Interface, List implementation of interface in project, user can choose one to show in sequence diagram. If only one implementation found, it will show automatically.
1.1: fix issue #3 support parameter is anther method call, fix issue #4 support pipeline call.
1.0.9: fix issue #1 recognise more generic method definition, fix issue #2 show popup menu on mac and linux.
1.0.8: Refine not to call "Deprecated" methods. Add Exclude Settings. Change the name to SequenceDiagram.
1.0.7: Remove "com.intellij.diagram" dependency.
1.0.6: HotFix: add missing res file in version 1.0.5.
1.0.5: Narrow the plugin support product list to java.[ABANDONED]
1.0.4: fixbug: go to source
1.0.3: fixbug: NPE when call psiMethod.getContainingClass() on enum class.
1.0.2: Add Sequence Diagram... menu under the Tools menu and Editor popup menu group with Diagram.; fixbug: method name with generic type.

Download Chart

63,000+ unique Downloads since 1.x version released April 2016.

Acknowledgement

Name history

SequencePlugin Maintained by Kentaur(Kesh Sibilev, ksibilve@yahoo.com) until 2011
SequencePluginReload Maintained by Vanhg(Evan Fan, fanhuagang@gmail.com) 2011 - 2015
SequenceDiagram Maintained by Vanco(Evan Fan, fanhuagang@gmail.com) since 2016

Why change name?

Since 2011, I found a solution of NPE of original SequencePlugin, so I write email to Kentaur with my solution, He said he was not coding any more. Instead, he send me the code. I fix the NPE issue and publish to plugin repository with new name SequencePluginReload.

But in 2015, the IntelliJ change the login system, and I lost my account, cannot continue publish new version to the repository.

In 2016, I change the Name again to SequenceDiagram and host the source code on github. Now it open source.

Thanks Kentaur for the great work on the original source.

scibel/SequencePlugin