DenverJUG

Wednesday May 12th, 2021

Watch on YouTube: https://www.youtube.com/watch?v=6NHBI2MojA8

5:30-5:45: Announcements

5:45-7:15: How and Why to Upgrade to Java 16 or 17

Java upgrades are sometimes seen as difficult and many applications are still running on an older version of Java. This session describes Java’s current six months release process and why applications should use a recent Java version.

After that, I’ll explain the challenges of upgrading and provide some useful tips to make the process easier. Concrete examples (including solutions) will be used to show you how to upgrade your application to Java 16 or 17.

About Johan Janssen

Johan is working as a software architect at Sanoma Learning. He has been working for various demanding companies where rapidly delivering high-quality software was very important. Johan regularly writes articles and presents about various subjects, but mainly around Java. He has spoken in 20 countries at more than 40 different conferences such as JavaOne, GOTO Amsterdam/Berlin/Copenhagen, Devoxx BE/UK/PL, JavaZone, J-Fall, Jfokus, JavaLand, Scala Days Berlin/New York. Johan received the JavaOne Rock Star and Oracle Code One Star awards.

You can find Johan on Twitter @johanjanssen42 (https://twitter.com/johanjanssen42).

7:15-7:30: Q & A

The live streaming of this meetup is sponsored by Okta (https://developer.okta.com/).

Wednesday, April 14, 2021
Watch on YouTube: https://www.youtube.com/watch?v=ddK4Wu1fY4I

5:30-5:45: Announcements

5:45-7:15: Managing State in Elastic Microservices

Scaling stateless services is easy, but scaling their stateful data stores, not so much. This is true whether you are using an “old fashioned” relational database, or one of the popular, “modern” KV data stores, such as MongoDB or Redis.

In this presentation, we will discuss some of the issues with state management in elastic microservices today, and look into how Coherence Community Edition, with its Helidon and Eclipse MicroProfile integration, provides a better alternative you can use tomorrow.

About Aleks Seović

Aleks Seović is an architect at Oracle, where he works on Oracle Coherence, a leading in-memory data grid product, and contributes to the Helidon microservices framework. Most recently, Aleks led the design and implementation of the Helidon gRPC framework, as well as CDI and Eclipse MicroProfile support in Coherence. He currently leads the implementation of Coherence native clients, GraphQL support, and Spring integration.

Prior to joining Oracle in 2016, Aleks led a boutique consultancy practice, where he worked with customers around the world to help them implement mission-critical applications on top of Coherence.

Aleks is the author of “Oracle Coherence 3.5” (Packt Publishing, 2010) and frequently speaks about and evangelizes Coherence at industry conferences, Java and .NET user group events, and Coherence SIGs.

You can find Aleks on Twitter @aseovic (https://twitter.com/aseovic).

7:15-7:30: Q & A

The live streaming of this meetup is sponsored by Okta (https://developer.okta.com/).

Online Event – Wednesday March 10, 2021. Watch live at https://www.youtube.com/watch?v=TbCOVruJGHc

Foojay (http://foojay.io) is the new Java community platform with everything you need to do your daily Java development work — with reference materials on the latest OpenJDK versions, vendors, and distributions, together with insights into the latest quarterly updates, articles, blogs, tips and tricks, and much more. And all for free, accompanied by a Slack channel for discussion on all things Java and OpenJDK. Follow @foojaio on Twitter (https://twitter.com/foojayio).

To celebrate and introduce Foojay.io, members of the Foojay community are doing a JUG tour and one of the stops is right here. Come join in, learn about Foojay, and hear Steve Chin speak on JavaFX.

5:45-7:15: Modern Java Clients with JavaFX: The Definitive Guide

This session is for professionals building Java applications for desktop, mobile, and embedded devices in the Cloud age. It will help you to build enhanced visual experiences and to deploy modern, easy to maintain, client applications across a variety of platforms.

These applications can take advantage of the latest user interface components, 3D technology, and cloud services to create immersive visualizations and allow high-value data manipulation. Learn how to leverage the latest open-source Java client technologies to build rich, responsive, and modern UIs from the authors of the definitive Java Client reference.

About Steve Chin

Stephen Chin is Senior Director of Developer Relations at JFrog, author of Raspberry Pi with Java, The Definitive Guide to Modern Client Development, and Pro JavaFX Platform. He has keynoted numerous Java conferences around the world including Oracle Code One (formerly JavaOne), where he is an 8-time Rock Star Award recipient. Stephen is an avid motorcyclist who has done evangelism tours in Europe, Japan, and Brazil, interviewing hackers in their natural habitat and posting the videos on http://nighthacking.org/. When he is not traveling, he enjoys teaching kids how to do embedded and robot programming together with his teenage daughter.

You can find Steve on Twitter @steveonjava (https://twitter.com/steveonjava).

7:15-7:30: Q & A

The live streaming of this meetup is sponsored by Okta (https://developer.okta.com/).

Wednesday February 10, 2021

Wednesday, January 13, 2021

Online Event – watch on YouTube: https://youtu.be/qQhJSMoKQr0

Details
5:30-5:45: Announcements

5:45-7:15: The technology behind “The Best Country for observing the Northern Lights”

No matter what kind of jobs (developers, managers, CEO, etc.) we do, all of us have a hobby, sometimes even more than one and it is great! So, I’m not an exception here. I do landscape photography and I found myself in love with the Northern Lights, astrophotography and many more sub-genres. Have you seen that Green Lady dancing over the sky? Oh boy, you better do this ASAP!

A friend of mine asked me about travelling north for the purpose of hunting the Northern Lights. This type of question is very complicated to answer, there are reasons for that. How would you compare landscapes (sceneries), experiences, culture, and people of that culture? They are all unique! It was really problematic to answer such an inquiry.

Having a background in data analysis (and a bit of science), I decided to solve this problem as a software engineer – define a problem, find consumable data sources and do some code for the sake of the result!

In this talk, I’ll be covering the following parts:

– how a funny experiment turned into a case study;

– how Java turned into the most powerful tool in the context of data analysis;

– why Java and not Python.
The idea and the key takeaway of this talk are to showcase how your job skills and your hobby can work side-by-side to producing beautiful results and how useful Java could be for parallel data pipelines.

About Denys Makogon

Software enthusiast focused on developing and designing platform and software as a service application for clouds. He’s a principal software developer in Oracle, concentrating on product development along with bringing well-designed and production ready integration with clouds solutions, contributor to various open source projects, cloud-related technologies along having fun with IoT devices and photography. Denis is a regular attendee and speaker at OpenStack summits (Atlanta, Austin, Paris, Barcelona, Boston) and PyCon Hong Kong 2016, 2017, PyCon Italy 2018, PyCon APAC 2018, PyCon Japan 2018. Co-author of OpenStack Application development, OpenStack Trove Essentials.

You can find Denys on Twitter @denis_makogon (https://twitter.com/denis_makogon).

7:15-7:30: Q & A

The live streaming of this meetup is sponsored by Okta (https://developer.okta.com/).

Details

Details

Tune in to watch and chat on YouTube: https://youtu.be/Kt0LeN3TrkM

5:30-5:45: Announcements

5:45-7:15: The RSocket Revolution

RSocket is here! RSocket is a binary, reactive, and operations-friendly wire protocol that integrates that builds on top of Project Reactor. Engineers originally developed RSocket at Netflix. Then they moved to Facebook. RSocket was the fledgling project for the Reactive Foundation, of which the spring team, Lightbend, Facebook, Alibaba, and others are founding members. RSocket represents the operational insight of some of the largest organizations in the world. And, it readily integrates with Spring. Join me, Spring Developer Advocate Josh Long (@starbuxman) in this rapid, reactive ride on the RSocket rocket, and we’ll look at the rich Spring support for RSocket and its use in building faster, more robust and more scalable services.

– How to build RSocket-based controllers in Spring Framework
– Build RSocket clients using the `RSocketRequester`
– How to use the `rsc` client
– Build processing pipelines using Spring Integration
– Secure our services with Spring Security
– Introduce bidirectional communication
– and more!

About Josh Long

Josh has been the first Spring Developer Advocate since 2010. Josh is a Java Champion, author of 6 books (including O’Reilly’s Cloud Native Java: Designing Resilient Systems with Spring Boot, Spring Cloud, and Cloud Foundry and the upcoming Reactive Spring) and numerous best-selling video trainings (including Building Microservices with Spring Boot Livelessons with Spring Boot co-founder Phil Webb), and an open-source contributor (Spring Boot, Spring Integration, Spring Cloud, Activiti and Vaadin), a podcaster (A Bootiful Podcast) and a YouTuber.

You can find Josh on Twitter @starbuxman (https://twitter.com/starbuxman).

7:15-7:30: Q & A

The live streaming of this meetup is sponsored by Okta (https://developer.okta.com/).

Tune in to watch and chat on YouTube: https://youtu.be/fM4MB2FkY5A

Details