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POJO-actor Tutorial Part 2 (First Half): Workflow Language Basics

· 2 min read
Scivics Lab
Scivics Lab
Development Team

POJO-actor Workflow

Our second tutorial article about POJO-actor has been published on CoderLegion! This article introduces the workflow engine (actor-WF) added in POJO-actor version 2.x.

Article Overview​

This tutorial covers the foundational concepts of the POJO-actor workflow language:

From Actors to Agents​

Learn how Virtual Threads in JDK 21+ enable thousands of concurrent actors, making it practical to build agent-based simulations and autonomous systems.

Workflow Language Design​

Actor-WF uses a beautifully simple three-element model:

"Send this message to this actor"

All workflow steps can be expressed uniformly through consistent actor, method, and argument specifications.

Turing Machine Foundation​

The workflow system is grounded in Turing machine theory, enabling complex logic through state transitions rather than custom syntax.

Core Concepts​

  • State Transitions: Workflows progress through defined states with clear transition rules
  • Conditional Branching: Multiple rows sharing the same starting state enable if-else logic
  • Termination: Workflows complete when reaching an "end" state or finding no matching row

Practical Examples​

The tutorial includes hands-on examples implementing historical Turing machines that generate binary sequences, demonstrating how abstract computational theory applies to modern workflow automation.

Read the Full Article​

Check out the complete tutorial on CoderLegion:

POJO-actor Tutorial Part 2 (First Half): Workflow Language Basics

Stay tuned for the second half of this tutorial!