The Portland Java User Group is holding a meeting on Wednesday Feb 20th at New Relic (111 SW Fifth Ave, Suite 2700 · Portland, OR).

Our feature speaker for this meeting is Sebastian Daschner, a Lead Java Developer Advocate for IBM and esteemed Java Champion. He will be giving the following two presentations:

--- PART 1 --- TITLE: 7 Principles of Productive Software Developers ABSTRACT: When working as a software developer, as well as in any other job, it’s important to be productive and to get things done. You want to focus on what adds value, increase your development speed, and cut out as many of the cumbersome, boring and repetitive tasks as possible.

This session shows seven principles how to accomplish the goal of being more effective and efficient as a Java developer. These principles include technical as well as self-organizational aspects. We’ll see how to implement them, especially how we can get the most out of our tools, why the invention of the mouse was a setback in productivity, and which mindsets to follow. This talk is not limited to specific tools or technologies yet it’ll provide examples and experiences, and it is brought to you by a German — from the country of efficiency.

--- PART 2 --- TITLE: Cloud Native, Service-Meshed Java Enterprise With Istio ABSTRACT: In enterprise software, we see more and more of the cloud native technologies, especially container orchestration and service meshes, emerging and slowly taking over the market. Developers are facing the challenge which technology to choose to implement microservices for a cloud native setting. Java Enterprise has been used for software solutions for a long time and its APIs are well-established in the ecosystem. However, is it possible to develop cloud native, service-meshed Java Enterprise applications that fulfill concerns such as scalability, resiliency, and telemetry — in an effective, manageable way?

This session shows how to implement service-meshed applications using Java EE 8 and MicroProfile. We will develop a mesh of microservices, managed by Kubernetes and Istio. We’ll see why especially the Java Enterprise approach fits the concepts behind container orchestration and service meshes well. The session also includes how to integrate the required cross-cutting concerns, such as monitoring, tracing, or resiliency into our applications, where developers have to actively integrate technology themselves and where the platform support us. Especially the cooperation between Java EE and MicroProfile provides a potent technology. All of the time will be spent live-coding while explaining the concepts and solutions.

SPEAKER: Sebastian Daschner Lead Java Developer Advocate for IBM and renowned Java Champion https://www.sebastian-daschner.com/

Please RSVP here: https://www.meetup.com/PDXJUG/events/258177965/

Hope to see you there!

The Portland Java User Group is holding a meeting on Wednesday May 15th at Zoom Care (1455 NW Irving St #600 · Portland, OR).

Our feature speaker for this meeting is Ben Evans, a highly popular Java evangelist. Ben has been a pillar in the Java community for many years. He's the co-founder of jClarity and a previous representative the JCP Executive Committee (for 6 years) . He is the author of five books (‘The Well-Grounded Java Developer’ and the new editions of ‘Java in a Nutshell’, ‘Java: The Legend’ and ‘Optimizing Java’) and writes regularly for industry publications.

ABSTRACT: The JVM is a truly remarkable piece of software, but it is still just a computer program, not magic! In this talk, I will explain how we might start to implement a JVM from scratch, using the Java programming language. Fundamental concepts such as the bytecode interpreter, classfile parsing and memory management will be explained, using an open-source implementation as reference. We will build up a working interpreter capable of executing simple methods, and then discuss the limitations of the simple JVM.

The second half of the talk will be to show how the Rust programming language provides a good alternative implementation language for our simple JVM. We will showcase some basic Rust language features and show how they can be used to provide a version of our JVM that is much cleaner and easier to understand, even if you've never seen Rust code before!

Please RSVP here: https://www.meetup.com/PDXJUG/events/261007537/

Hope to see you there!