DenverJUG

5:30-6:00: Food, drinks, and networking

6:00-6:15: Announcements

6:15-7:45: Auto-Remediating Code at Scale with OpenRewrite

In the rapidly evolving software development landscape, keeping up with code quality, security, and dependencies can become a large share of our work as developers. In addition, traditional approaches to larger-scale framework migrations involve manual efforts, leading to inefficiencies, errors, and significant time investments.

However, with the emergence of OpenRewrite, a powerful open-source tool, we have witnessed a groundbreaking shift in automating code remediations and migrations. This is helping to drive innovation and enable a more seamless digital transformation.

This presentation aims to showcase the transformative power of OpenRewrite in streamlining the migration process and unlocking new possibilities for software developers. We will delve into the key features and capabilities of OpenRewrite, highlighting its potential to revolutionize how we maintain and evolve modern software.

By leveraging OpenRewrite, developers can automate code refactoring, safely update deprecated APIs, modernize libraries, and apply architectural patterns consistently across an entire codebase. Its robust rule-based system allows precise control over code transformations, ensuring adherence to industry best practices and specific project requirements.

OpenRewrite’s lossless semantic tree (LST) goes beyond simple search and replace operations. It understands the structure and semantics of code, enabling it to navigate complex interdependencies, handle code variations, and perform refactorings confidently. This empowers developers to focus on higher-level tasks and innovation rather than getting bogged down in repetitive, error-prone manual changes.

Join us to explore the full potential of OpenRewrite and discover how this powerful tool is driving innovation and inspiring developers. Prepare to embrace the future of software development as we unlock new efficiencies and opportunities in the ever-evolving world of Java.

About Tracey Yoshima

Tracey Yoshima is a senior software engineer at Moderne, which automates software refactoring at scale. Previously, he worked on platform teams at Build.com and Nike, focusing on customer analytics. Now, as an engineer at Moderne, Tracey focuses on language engineering, building full-fidelity language representations that enable accurate code transformation at scale.

You can find Tracey on LinkedIn.

7:45: Door prizes sponsored by JFrog and JetBrains

8:00: Post-meetup networking sponsored by Okta.

5:30-6:00: Food, drinks, and networking

6:00-6:15: Announcements

6:15-7:45: Quarkus Live!

An in-depth look at Quarkus – the self-proclaimed Supersonic / Subatomic Java stack.

Through a live coding demonstration, we will explore the features of the Quarkus framework and attempt to answer the following questions:

• What is it, and why was it created?
• How does it differ from traditional Java?
• What are some pros and cons of the framework?
• Should we consider it for our application(s)?

About Jaime Niswonger

Jaime Niswonger is a change agent for enterprise software at Keyhole Software. With more than three decades of experience as an architect, technical lead, mentor, and speaker — Jaime has been highly successful in guiding organizations to avoid the pitfalls of new technology adoption through strategic and tactical leadership. He is an avid learner and constantly seeks ways to improve his skill set and stay current with the fast-moving technology landscape.

You can find him on LinkedIn.

7:45: Door prizes sponsored by JFrog and Intellij

8:00: Post-meetup networking sponsored by Okta.

NOTE: This meetup is at a new venue in DTC! We know that Venkat draws a crowd, so we’re moving to a Thrive location that has a larger capacity.

5:30-6:00: Food, drinks, and networking. Food and drinks sponsored by TekSystems

6:00-6:15: Announcements

6:15-7:45: Know your Java?

Many of us have significant experience in Java. Yet, from time to time, we get tripped up by some code that we quite did not expect to behave the way it does. In this presentation, we will take a look at some of those and get a deeper understanding of the language we use every day.

About Venkat Subramaniam

Dr. Venkat Subramaniam is an award-winning author, founder of Agile Developer, Inc., and an instructional professor at the University of Houston.

He has trained and mentored thousands of software developers in the US, Canada, Europe, and Asia, and is a regularly-invited speaker at several international conferences. Venkat helps his clients effectively apply and succeed with sustainable agile practices on their software projects.

Venkat is a (co)author of multiple technical books, including the 2007 Jolt Productivity award-winning book Practices of an Agile Developer. You can find a list of his books at https://www.agiledeveloper.com. You can reach him by email at venkats@agiledeveloper.com or on Twitter at @venkat_s.

7:45: Door prizes sponsored by JFrog, JetBrains and ÜberConf

8:00: Post-meetup networking sponsored by Okta.

5:30-6:00: Food, drinks, and networking

6:00-6:15: Announcements

6:15-7:45: Should I upgrade my Java?

Java 11 was released in September 2018, and Java 17 was released in 2021. However, even today, plenty of developers still use Java 11 or even Java 8. The motivation behind this talk is to make a compelling argument for an upgrade from Java 8 or 11 to Java 17. In this session, Nikhil will showcase the new features, demonstrate improvements, provide performance comparisons, and briefly discuss upgrade strategies. At the end, you’ll be able to answer the question, “Should I upgrade my Java?”

About Nikhil Nanivadekar

Nikhil currently works as a Principal Engineer at Amazon. Prior to working at Amazon, Nikhil worked in the financial sector designing and developing mission-critical applications. He holds a Bachelor’s degree in Mechanical Engineering from the University of Pune, and a Master’s of Science in Mechanical Engineering with a specialization in robotics and controls from the University of Utah. He has always been passionate about open-source software and is the active project lead of the open-source Eclipse Collections library. He has hosted workshops and talks revolving around the theme of robotics, data structures, and introductory talks to share his enthusiasm about different technologies. He is a regular speaker at technical conferences worldwide. Nikhil has contributed to 97 Things Every Java Programmer Should Know (O’Reilly) and 97 Things Every Cloud Engineer Should Know(O’Reilly). In 2018, Nikhil was selected as a Java Champion. He enjoys cooking with his family, hiking, skiing, reading, and working with animal rescue and relief organizations.

You can find him on Twitter at @NikhilNanivade.

7:45: Door prizes sponsored by JFrog and Jetbrains

8:00: Post-meetup networking sponsored by Okta.

Wednesday, January 11 2023

Hello Denver Java Enthusiasts!

We’re starting at a new location in 2023 – Thrive Workplace in Cherry Creek. If you’re looking for a co-working location, they’re excellent!

We figure it’s best to start small and grow to a bigger space as needed. There is paid parking nearby the venue. We look forward to seeing you!

5:30-6:00: Food, Soda, Beer, and Networking

6:00-6:15: Announcements

6:15-7:45: Java meets TypeScript: building a full-stack reactive web app with Spring Boot

As Java developers, we know the benefits of type-safety when building apps. The problem? Usually, that type-safety ends when we leave the server. What if it didn’t have to be that way?

In this presentation, you’ll learn how to build a full-stack reactive web app through live code examples. We’ll use Spring Boot and Java on the backend and React with TypeScript on the frontend, connecting the two with the new Hilla framework from Vaadin.

About Marcus Hellberg:

Marcus is a long-time Java and web developer, always curious to learn new things. He’s interested in combining modern web technologies and Java. Marcus loves teaching developers about cool new technologies and has presented at over 100 conferences and user groups around the world. He currently leads Developer Relations at Vaadin.

You can find Marcus on Twitter at @marcushellberg.

7:45: Door prizes sponsored by JFrog and Intellij.

The post-event festivities are sponsored by Okta.