JUG Oberpfalz

Welcome to the JUG Oberpfalz Online Live Coding Sessions!
Our online sessions are held in English and streamed live on YouTube.
The recording will be available afterwards. Join the live chat, ask questions, and follow along as we build a real application together.
This session is hosted by Johannes Rabauer with special guest Les Jackson from Temporal.

Session Topic
AI powered applications often perform long running tasks, wait for user input, and communicate with external systems. But what happens if the application crashes halfway through?
In this live coding session, we'll build a Java application using LangChain4j, Temporal, Quarkus, and Qute to demonstrate how reliable AI applications can pause, recover, and continue exactly where they left off. We've already prepared the project infrastructure, allowing us to focus on implementing the business logic with AI assisted development.
Using a vacation approval system as our example, we'll explore how LangChain4j adds AI capabilities while Temporal provides durable workflow orchestration that survives crashes, waits for human interaction, and automatically retries failures.
What we'll do

• Build a Java application with LangChain4j and Temporal
• Use AI assisted development to implement the business logic
• Create durable workflows that survive crashes and restarts
• Demonstrate human interaction with Temporal Signals
• Answer questions from the community
• Publish the finished project as open source

Topics

• LangChain4j
• Temporal
• Java
• Quarkus
• AI assisted software engineering
• Durable workflows

Whether you're a Java developer or simply curious about building reliable AI powered applications, you're welcome to join.
See you in the live chat!

Embrace Your Java Journey

Dive into the pulsating heart of the Java community at JCON EUROPE 2027, the premier in-person Java community conference in Germany, lovingly organized by the Java User Group Oberpfalz in collaboration with JAVAPRO Magazine.

https://2027.europe.jcon.one/