Intro to Java compiler optimizations & Voice integration for your (pet) projects

At our second meetup of 2020, we'll take care of food, drinks and 2 awesome talks. You just need to bring you ;-)

Jago de Vreede will kick off, introducing the optimizations that Java HotSpot compilers apply to your Java code. Next, Paco van Beckhoven will explain how to add voice integration to your own projects.

Both talks will be presented in English. RSVP now for an evening of learning and fun!

The meetup will be at the OpenValue office in Utrecht (https://route.openvalue.nl), enough free parking spaces available.

Agenda

17:30 Walk in
18:00 Food
18:30 Talk 1 (see below)
19:30 Break
19:45 Talk 2 (see below)
20:45 Drinks

First talk: "What do you know about Java compiler optimizations?" by Jago de Vreede
The Java HotSpot compilers support a suite of advanced optimizations to enable high performance programs. Some of these optimizations include method inlining, removing unnecessary checks and loop unrolling. The compiler does this at different times, but what do you already know about these optimizations? In this talk, I’ll test your knowledge of different optimizations. With the help of some questions we will dive into what the compiler does and when. After each question the answer will be explained. So even if you don’t know anything about the subject you should get a deeper understanding of why the compiler behaves as it does. And why sometimes bad code is just as good as the clean code.

About Jago
Jago is a full-stack software engineer at OpenValue, as a software engineer he has seen a broad-spectrum of projects and he has been working on multiple large scale educational software and banking projects for the last years. His work is not exclusive to Java and Scala development but also does front-end development, and the integration between these. He is passionate about his work and likes to share the knowledge and has therefore spoken on conferences worldwide.

Second talk: "Your (pet) projects need voice integration!" by Paco van Beckhoven
Nowadays most people have a Google home, Alexa echo or other devices which integrates with voice assistants.
How cool would it be to create your own custom voice commands for your project?
Using serverless with Firebase Cloud Functions, Dialogflow, a Raspberry Pi and a bit of wiring I turned an old fan in a state of the art fan that can be controlled via the google assistant, slack, Alexa and more!
During this presentation I will live code/configure all parts from creating custom voice commands to fulfilling intents and controlling a Raspberry Pi.

About Paco
Paco is a passionate software engineer that likes to challenge the world and the software around him.
He works as a consultant for OpenValue where he helps customers build better software.
A few years ago, he started speaking at conferences to entertain, and more importantly, educate visitors on various topics.