Meetup Info


18:00 Networking, food, and drinks
18:30 Presentation
20:00 Beers!

How The Scala Way Gets in Scala's Way && Oracle JDK vs Open JDK

2019-09-17 18:00 @ Logic20/20 Inc – 1501 1st Ave S Suite 310, Seattle
51 attending

TALK 1) How The Scala Way Gets in Scala's Way

As a veteran Java developer, over the course of three college courses and my three most recent jobs, I've gone from being apprehensive of Scala to accepting Scala as my all-purpose first-choice programming language.

And yet, at the same time, I've become all the more skeptical of a certain opinionated way of doing Scala that has taken hold in the Scala community, something I'll call "The Scala Way." Its hallmarks:

An all-consuming, almost academic focus on writing purely functional code, to the neglect of Scala's object-oriented side.
An NIH "not invented here" rejection of anything Java.

Nowhere are the perils of the "The Scala Way" more evident than in the community's fraught relationship with dependency injection. I'll go over the various ways that DI is, or isn't, done in Scala. I'll cover the demise of the Spring Scala project. And I'll offer some unobtrusive techniques to introduce Spring into a Scala code base.

DI then becomes the springboard for identifying two tenets of Scala thinking that are assumed to be inextricably linked. I'll argue that in fact they can be decoupled.

Building on that insight, I'll expand the discussion with some heterodox perspectives on:

Exception handling.
Database clients.
And build tools.

I'll show examples of how code written The Scala Way, by bona fide Scala experts, violates the core ethos of favoring essence over ceremony, and how to take that code and make it simpler, more testable, and more maintainable–i.e. make it better–all without straying from writing idiomatic Scala or from compromising on being functional and immutable where you need to be.

This isn't just a talk about Scala. This is a reflection on software engineering ecosystems, cultures, and values; on dealing with limited knowledge and imperfect information; and on the tension between breadth and depth. If you're working with Scala, this promises to be the most provocative talk you've attended in a while. It's the talk the Scala consultants don't want you to hear. And if you're not working with Scala, this promises to expand your perspective.

SPEAKER: Mitch Gitman

Mitch is a senior software engineer at T-Mobile where he's the dev lead on T-Mobile for Business's emerging reactive big-data platform built on Kafka and Cassandra. He has close to 20 years of software engineering experience. Most recently he's given talks to the local Cassandra community.

TALK 2) Oracle JDK vs Open JDK
Big changes have come with the new Java licensing model and JDK release train for Oracle. The full impact may not yet be felt. We’ll look at the pros and cons and discuss some defensive strategies to help avoid potential build issues.

We’ll look at:

History of Java versioning
New licensing model and Oracle communications on the topic
Risks and rewards of the new licensing model, new support models, and the new release train
Defensive strategies for your build pipeline
Establishing a corporate policy

Speaker bio:

Michael Ashby is the Principal Architect at Logic20/20. With over 20 years of experience in software architecture, design, and implementation. He has architected and implemented real-time streaming platforms, web services, and machine-learning platforms for clients nationally. Currently working across 7+ amazing development teams in Seattle, Bellevue and Bothell.

As a solution architect, Michael is responsible for ensuring that every project that he delivers exceeds the client’s expectations and continues to add value to the client’s business. To do so, he works closely with the client’s business, operations, security, infrastructure, and engineering stakeholders to ensure that the designs are secure, testable, performant, reliable, scalable, cost-effective, continuously deployable and maintainable.​

Michael is a graduate of San Francisco State University and has a degree in Linguistics.

SeaJUG Office Hours

2019-09-24 18:00 @ Code Fellows – 2901 3rd Ave #300, Seattle
14 attending

Have questions about Java? Need help with a project or want a second set of eyes to dig into that tricky issue you’ve been facing? Or are you a total newbie interested in learning Java and don't know where to start? Come hang out with fellow SeaJUG members at Java Office Hours!

SeaJUG Office Hours will be hosted once a month in the evening from 6:00-8:00pm. Each Office Hours session will feature volunteer mentors to help answer questions and provide feedback.

SeaJUG Office Hours are based upon CJUG ( Office Hours and follow a similar 'coffee and code' style designed to connect people to work on personal projects, provide code reviews, answer questions, and just hang out. This is an open format so feel free to come and go as you please.


When/Where will office hours be hosted?
– SeaJUG Office Hours will be scheduled on a monthly basis and last from 6:00 – 8:00pm. This will be an open format so come and go as you please.

Who should attend?
– anyone who would like a code review
– anyone who would like help with a coding issue
– anyone who would like to collaborate on a project
– anyone interested in java related technologies
– anyone who just wants to hang out

I’m interested in becoming an Office Hours Aide. What do I do?
– Thanks for volunteering! Please contact Sam at [masked] and introduce yourself.

What should I bring?
– A laptop and your questions/code/project/friend!

Katherine G. Johnson Event Space

There is on-site parking, street parking, and ample public transportation options
Bike parking is available on level 'UP' in the parking garage below the building. Garage access via the northwest corner of 2nd and Broad. Please supply your own lock.


The Seattle Java User’s group has been meeting since the mid-90s in the Seattle and Eastside area. It is geared towards topics related to the Java Virtual Machine and languages which run on it such as Java, etc. You can find us on

SeaJUG is an all volunteer effort – which means items such as the website and mailing list are updated as schedules afford. We meet on the 3rd Tuesday of every month. We need suggestions/volunteers for topics! If you’d like to donate your time/skills to the cause, please contact Nimret Sandhu.

Chair: Nimret Sandhu
Community Leaders: Freddy Guime, Ben Garnaat
Founder: Jayson Raymond