SequenceDiagram IntelliJ plugin

One of our KdG students pointed us to the SequenceDiagram plugin for the IntelliJ IDE. The plugin reverse engineers a method into a UML sequence diagram. You click on a method and get a graphical view of its inner workings and interaction with other objects.

 

It also has a nice solution for representing lambda's, something the UML standard does not have specific support for.

That's not all

• from each method in the sequence diagram you can navigate back to your code. 
• the method  numbers (which are more useful in a commuication diagrams) can be turned off in the preferences
• exports to plantUML
  

The author is very responsive to issues submitted. I asked to make the return arrows optional and lo! in the the latest release there is an option to do so.

Only remark I have is that control flow frames (loop, alt) are not supported and everything is shown as one big, well, sequence. There is an issue related to this that is marked solved, but no milestone associated.

But this is a nice effort, and way better respecting UML conventions than IntelliJ's own class diagram generator.

UML links (updated)

• UML specification
• UML overviews
• UML diagrams
• Agile modeling
• UML tools
• UMLet UML tool
•  My modified palettes
• I made some diagrams more consistent with UML 2 and modified some elements to make them resize automatically
• unpack into the palettes folder of Umlet (you may want to make a backup first)
• UMLetino browser based versio
• text UML tools
  
• Astah
• Visual Paradigm
• Enterprise Architect ($)
• Online Drawing tools
• draw.io
• Lucidchart
• Use Cases 2.0

Java SE version history (updated)

Version	Name	Release	Major new features
17 (LTS)		9/2021	sealed class
16		3/2021	record
15		9/2020	Text blocks
14		3/2020	Switch expressions
11 (LTS)		9/2018	HTTP Client and WebSocket APIs Run (single file) source code
9		2016	JSR 294: modular JDK (Jigsaw) Searchable javadoc JAXB 2.3
8 (LTS)	Spider	3/2014	JSR 335: lambda expressions Collections Stream Framework JSR 310: Date and Time API Compact profiles JSR 308: annotations outside declarations (on usage)
7	Dolphin	7/2011	language (project coin): switch on strings, multi catch, try with autoclosing resources, empty generics (diamond operator), binary literal, underscores in numbers NIO.2 file handling Fork/Join concurrency JAX-WS 2.2 (SOAP 1.2, WS-I 2.0, metro 2.0)
6	Mustang	12/2006	JSR 223: scripting language support JSR 224: JAX-WS2.0 (metro 1.x) JSR 221: JDBC 4 (driver autoloading)) Perfomance enhancements in synchronisation and garbage collection
5	Tiger	9/2004	language (JSR 201): Enumerations, autoboxing, enhanced for loop, static import, vararg JSR 175: Annotations JSR 14: Generics java.util.concurrent java.util.Scanner RMI automatic stub generation
1.4	Merlin	2/2002	language: assert regular expressions JSR 51: NIO JSR 47: java.util.logging JSR 54: JDBC 3 (metadata API, autogenerated keys, transaction savepoints, multiple || resultsets/statement) security and cryptography
1.3	Kestrel	5/2000	HotSpot JVM RMI/CORBA support JNDI
1.2	Playground	12/1998	Collections Swing JIT compiler Browser plugin JDBC 2.1 (datasources, distributed transactions, connection pooling,RowSet, ResultSet backscrolling and updating )
1.1		2/1997	AWT events reorganisation inner classes JavaBeans JDBC RMI reflection
1.0		1/1996

Here's an overview of Java EE versions

Google Drive: HOWTO copy a folder (containing Google docs)

For unclear reasons Google Drive does not support copying folders.

Workaround 1: copy the folders in your local Google Drive desktop environment and everything will be synced to your drive.

This does however not work for folders containing Google docs. Your desktop only has a link to the real thing that resides in the cloud. Local copying does not work on those links.

Workaround 2:

1. From Google drive, download the folder to your local system. Google drive will convert all your google docs to their MS Office counterpart in the process. 
2. Unpack the downloaded zip to a desktop folder that is synced to your Google Drive.