You do not want to miss this vJUG session. The amazing Venkat Subramaniam will teach us about the different types of gatherers and how to implement them using practical live-coded examples.

📍 **Location:** https://www.youtube.com/live/dxVDiJsyu3Y
📅 **Date:** 28th May 2025
⏰ **Timing:**

* 10:00 AM \(PT\) \| 6:00 PM \(GMT\): Live stream kicks off
* 10:10 AM \(PT\) \| 6:10 PM \(GMT\): Session by Venkat Subramaniam
* 11:00 AM \(PT\) \| 7:00 PM \(GMT\): That’s a wrap\, live stream ends\!

**Extending Functional Pipelines with Gatherers**
The Stream API has a wealth of methods, like filter, map, takeWhile, limit, and so on, to build functional pipelines. Yet, you may run into situations in your applications that readily do not fall in place to make use of these built-in methods. The new gatherer() function, along with the Gatherer interface, gives you the necessary tools to create your own custom steps in the functional pipeline. In this presentation, learn about the different types of gatherers and how to implement them using practical live-coded examples.

**Speaker**
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](https://www.agiledeveloper.com/)>

**Host**
*TBC*

\*\*\*
**Join the Community!**
If you haven't joined the Slack community, what are you waiting for? It's the ultimate spot to throw in your questions during our live sessions and mingle with fellow Java enthusiasts from all around the world.
**Simply click here to join us:** [https://bit.ly/vJUG-Slack](https://bit.ly/vJUG-Slack)

Virtual Java User Group

Kim Fletcher

Mark McKelvy

Elisa

Rodrigo Lopes

Phil Hodges

Susanne

Charles de MAGNEVAL

Mark Dechamps

Hari

Ineke

Jean-Louis Pereira

Mohana

Vikramaditya Bindal

Sindy Senorita Dewanti

Dzmitry Kalianchuk

Corina Bumbacea

Filippos Papadopoulos

shaileshbarde

edhulbert

Wiktor Sztajerowski

Extending Functional Pipelines with Gatherers with Dr. Venkat Subramaniam

Online event

**vJUG is back this June with an exciting session for Java developers!**

Join us as **Aicha Laafia**, Java Software Engineer at Adservio, explores the power of **green programming** in Java with her talk: **“Building Sustainable Software with Java: Tips & Techniques.**” 🌱☕

In this unconference-style session, we’ll dive into practical techniques for optimizing resources, writing efficient algorithms, and leveraging cloud solutions—all to reduce the environmental footprint of Java applications. Whether you’re a seasoned Java pro or just starting out, you’ll gain actionable insights to make your code more sustainable.

**💡 Let’s build smarter, greener Java applications together. Don’t miss it!**

**📅 Date:** 11th June 2025
**📡 Virtual:** https://www.youtube.com/live/q6DM_sfRhpE

**🕒 Timing:**
10:00 AM \(PT\) \| 6:00 PM \(GMT\): Live stream kicks off
10:10 AM \(PT\) \| 6:10 PM \(GMT\): Session by Aicha Laafia
11:00 AM \(PT\) \| 7:00 PM \(GMT\): That’s a wrap\, live stream ends

**Building Sustainable Software with Java: Tips & Techniques**

Join us for an unconference on "green programming" in Java development!
Together, we'll explore practical techniques for resource optimization, efficient algorithms, and cloud-based solutions to make our code more eco-friendly.
Tailored for developers of all levels, this session will provide actionable insights and real-world examples to help reduce the environmental impact of Java applications.
Don't miss this opportunity to refine your coding practices and contribute to a greener planet!

**Speaker**
**Aicha Laafia, Java Software Engineer at Adservio**
A Java software engineer with a love for coding, an interest in sustainability, and a commitment to empowering women in tech.

I am a Women Techmakers and Girls Code ambassador, an IAmRemarkable facilitator, a member of the Moroccan Association of Computing Science and part of Jetbrains Community Contributor program.

I focus on creating software with minimal environmental impact while mentoring and supporting women in technology.

When I’m not coding, I enjoy exploring delicious food, phone photography, and watching Formula 1.
**[Twitter](https://x.com/AichaLaafia), [LinkedIn](https://www.linkedin.com/in/aicha-laafia-0266a6126/)**

**Host**
*TBC - Details coming soon*

\*\*\*
**Join the Community!**
If you haven't joined the Slack community, what are you waiting for? It's the ultimate spot to throw in your questions during our live sessions and mingle with fellow Java enthusiasts from all around the world.
**Simply click here to join us:** [https://bit.ly/vJUG-Slack](https://bit.ly/vJUG-Slack)

Samantha hepburn

Tomas Zuber

Joël iyebi

Maja

Naiomi Naidoo

Christoph B

Emrah Kocaman

Radu Dumbrăveanu

Iván Valencia

Victoria Holland

Venugopal Chidambaram

Akshay Vadsara

Achraf Hasbi

Wallace Espindola

Building Sustainable Software with Java: Tips & Techniques with Aicha Laafia

Java User Groups

Search {networkName}

Groups

{PRO_NETWORK_NAME} is on Meetup Pro with more than {PRO_MEMBER_COUNT} members across {PRO_GROUP_COUNT} Meetups worldwide. Meetup Pro is the professional tool for organizing and communicating a network of users, partners, contributors and members.

Java User Groups

Java User Groups

Who we are

Search Java User Groups

Upcoming events

Groups