Java Concurrency

**Join us for the very first LGBTQIA+ Book Club Arnhem 📚🌈** For our first read, we’ll be discussing Giovanni’s Room by James Baldwin — a queer literary classic exploring identity, love, shame, and belonging. Whether you’ve finished the book, are halfway through, or just want to meet new people in a relaxed and welcoming space, you’re very welcome. No academic pressure — just thoughtful conversation, community, and good vibes. ✨ What you can expect: • A welcoming and LGBTQIA+ friendly environment • Relaxed group discussion about the book and its themes • A mix of literature, conversation, and social connection • Space to share your thoughts openly — or simply listen • Community and good vibes 🌈 📍 Arnhem Libertas or De Kurk (final venue TBC) 🕖 Time: Wednesday, June 10th @ 19:00 📖 Book of the month: *Giovanni’s Room* — James Baldwin ☕ LGBTQIA+ friendly & inclusive 👥 Capacity: To help keep the discussion relaxed and meaningful, this first meetup will be limited to a maximum of 10 attendees. Please only register if you will attend, as there are limited spots and ideally we want everyone to have enough time to read the book. ☺️ Everyone is welcome, including first-time book club attendees. Hope this becomes a warm and inclusive space for LGBTQIA+ readers, conversations, and community in Arnhem 💛

Join us on **10 June** for an inspiring evening hosted by **Frontend Festival**. Where curious minds and creative builders come together to celebrate the art of the web. Expect a relaxed, high-energy meetup filled with fresh ideas, short talks, and meaningful conversations around modern frontend development, design, performance, accessibility, and the future of the web. Whether you’re a developer, designer, or simply passionate about crafting great digital experiences, this is the perfect place to connect, learn, and get inspired. Good vibes, great people, and plenty of room to share stories Don’t miss it! For tickets go to the website: [Frontend festival](https://frontendfestival.nl/) You cannot purchase them via this meet-up page.

**In het kort:** 💻 **Wat:** Live workshop @ NOVI Hogeschool 👥 **Wie:** Studenten van NOVI én iedereen die coderen wil ervaren 🧠 **Onderwerpen:** Git, GitHub , HTML, CSS, React en samenwerken 📅 **Wanneer**: Woensdag 10 juni 2026, 14:00 uur (tot uiterlijk 17:00) 📍 **Waar:** Op locatie! Newtonlaan 247, Utrecht (4e etage) **Welkom bij Coding Wednesday!** Samen duiken we in de creatieve wereld van programmeren. Elke maand is er een challenge of workshop gericht op coderen. **Wat doen we deze keer?** We bouwen een portfolio webpagina met HTML, CSS en React (Javascript framework). Een begin hebben we al. We werken samen aan dezelfde codebase om componenten toe te voegen en te verbeteren. Dit doen we met een versiebeheersysteem -> Github. **Heb ik voorkennis nodig?** Het is handig als je al wat code hebt geschreven hebt in eerdergenoemde programmeertalen en Git hebt geïnstalleerd en een Github account hebt. Zo niet, geen probleem. Je kan ook alleen meekijken, of samenwerken met iemand uit de groep. **Wat heb je nodig?** * Je eigen laptop met WiFi aansluiting * Installeer een **code editor**. Novi studenten kunnen Webstorm, Pycharm of IntelliJ gebruiken. Anders is [VSCode](https://code.visualstudio.com/download) een prima editor (gratis). **Is er een minimum aantal aanmeldingen?** Coding Wednesday gaat door als er 5 aanmeldingen zijn of meer. Dus vergeet vooral niet om je aan te melden :) Mocht het niet doorgaan, laten we dit een dag van tevoren weten Tot snel!

Hi all! 🙂 On Wednesdays we welcome you to practice languages! If you want to practice a specific (uncommon) language, please send us a message so we can find some conversation partners for you on our mailing list! We hope to see you in Café Marktzicht! In the last year we had tables for the following languages: * Dutch * English * French * Italian * Spanish * Turkish\* * German\* * Portuguese\* * Danish\* * Norwegian\* * Russian\* * Arabic\* * Chinese\*\* * Japanese\*\* * Indonesian\*\* * * Most likely, but not every week present. \*\* - Rather rare ;-) If your language is not in this list, please let us know! We have a large database of Language Cafe visitors speaking 56 different languages! We might be able to connect you with a person that does speak the language you want to practice. In case you are not in our database yet, please use this form: http://goo.gl/forms/oSCn9Dn8m8

In this meetup, we will gain insights into how doctors perceive security and privacy, learn how our speaker, Christian, and his team help doctors make confident care decisions, and why trust is the next big thing when building agentic systems. **SPEAKER** **[Christian Almurr](https://www.linkedin.com/in/christianalmurr/)** leads design for clinical communication and collaboration at Doctolib. He has a decade of experience in product and design strategy, driving system-level alignment in regulated industries. **HOST** **[Keen Design](https://www.keen.design/en/)** is a design services company in Utrecht that has helped clients with UX design since 2003. Currently, with 35 people in the Netherlands, they are working to grow their offices in Germany and the UK, continuously applying, embedding, and teaching Value Driven Design to elevate how UX design delivers impact. They believe every design needs users, and that an ally mindset shapes their relationships, making them a strong supporter of the UX community in the Netherlands. **PROGRAM** 18:00 Doors open with drinks & bites 18:30 Talk + Q&A 19:30 Drinks, Food & Networking 📸 Please keep in mind that there will be pictures taken at the event. They will be uploaded to the meetup page and might be used on social media.

Hi people! 👋 Tonight we'll enjoy a good rainy evening while getting cozy together at de Utrechter (Vredenburg 40, 3511 BD Utrecht), the popular bar/restaurant across the Tivoli building. This Meetup is expected to start at 21:15h and end at 23:15h. Please check the guidelines in the group description before joining us 😊: [https://www.meetup.com/utrecht-lgbt](https://www.meetup.com/utrecht-lgbt) ✨️ Don’t forget to follow us on Instagram @utrecht.lgbt ✨️ See you soon ❤️🌈

> The location is Biercafe Oproer, Utrecht Want to expand on a game design idea? Talk about a game feature that isn't just ready yet? Are you looking for playtesters or do you want to brainstorm on a new board game design with others and get their feedback? Find out what goes into making board games or just meet like-minded board game enthusiasts? Then the Amsterdam Board Game Design session is for you! Join us on [Discord](https://discord.gg/eDfmkyCyVX) for more information about what we do and upcoming events!

## 🎨**Activity for EXPATS & English Speakers** ☕ Are you an art enthusiast living in or around **Amersfoort, Hilversum, Utrecht, Nieuwegein, IJsseltein, De Bilt and the rest of cities of the Utrecht's province** who love painting or drawing? Maybe you've felt the joy of creating but struggled to find others who share your passion and speak **ENGLISH**? **You're not alone! 😉** ✨✨✨✨✨✨✨ ## 🖌️**About this event** You will meet other Art Lovers like you to Draw, Paint and have some drinks Together ! Our events are not just about sketching or creating art—they’re about building connections. Every two weeks, we meet at a café to have a relaxing time drawing a painting. Please keep on mind that **ENGLISH i**s the official language we will use to integrate everyone in our conversations. ⭕⭕⭕➡️ **IMPORTANT ⬅️** ⭕⭕⭕⭕ ### 👩🏻‍🎨**Book formally your Seat 🪑via [WHATSAPP](https://bit.ly/3BXXE0f)** **If you want to confirm officially your attendance and separate your seat🪑. Book your seat in meet-up, and contact us via [WHATSAPP HERE](https://bit.ly/3BXXE0f) to receive more information on the address of our activities.** **Thanks a lot for your understanding!** 💐🥰 ✨✨✨✨✨✨✨ ### 👩🏻‍🎨**How Does It Work?** This event is simple, this initiative takes 2 Hours. Most of the participants use pencils, water pencils or watercolours. Main aim is to socialize while we draw. There will be plenty of time to talk and get to know each other. We have to mention that this event is suitable for all levels. Many have started to draw in our event actually. Also it is very important that you **[JOIN US AT OUR WHATSAPP COMMUNITY](https://bit.ly/3BXXE0f),** to stay up to date on our upcoming events and participate in our Drawing and Painting Contests! **👉: [https://bit.ly/3BXXE0f](https://bit.ly/3BXXE0f)** 🍀 ✨✨✨✨✨✨✨ ### ☕**Where?** We will meet in different cafes mainly in the *center of Amersfoort ( and some occasions in other cities around)*. I will inform you of the exact place some days in advance this event. The place will depend on the number of attendees. ✨✨✨✨✨✨✨ ### **🎟️ What is included?** 🟢 **2 HOURS TO HAVE FUN!** 🟢 **15 mins warming-up creative activity and paper material**🖌️🎨 🟢 New friendships and **conversations in ENGLISH** in a relaxed atmosphere 🟢 **Souvenir picture** with you and the rest of Art Lovers 📷 🟢 Exclusive **access to our Art Lovers Community** on which you will receive: ***\~\~\~ Drawing challenges,*** ***\~\~\~ Training content,*** ***\~\~\~ FREE Entries only to members*** ***\~\~\~ Drawing Competitions*** 🟢 Time to **create alongside fellow artists and amateurs** 🟢 The freedom to **work at your own pace** 💃🕺🎈 ✨✨✨✨✨✨✨ ### 🖼️**Art Materials?** Bring your own practical art materials to be adaptable to sketch on a coffee table. Like your sketchbook, pencils, watercolor, markets, pencils, your Tablet..etc ✨✨✨✨✨✨✨ ## **See you to Paint, Draw, and drink together!🌟☕🍷🍪🍰**

We’re heading out for a beautiful 20 km loop hike from Afferden through the gorgeous Nationaal Park De Maasduinen. This route takes us through a striking Limburg landscape of forest, sandy paths, open heathland, river dunes, and wide views. Along the way, we pass the ruins of Kasteel Bleijenbeek and climb an uitkijktoren for a panoramic view over the Maasduinen landscape. One of the special features of this hike is that we cross the Maas river twice by small ferry. These crossings give the route an extra sense of adventure and connect the Maasduinen landscape with the village side of the river. After one of the crossings, we continue to the village of Vierlingsbeek, where we’ll take our longer break for a drink. After the break, we make our way back toward Afferden, completing a varied loop through forest, heathland, castle history, river scenery, ferry crossings, and quiet Limburg countryside. A hike with forest energy, open heathland, castle ruins, a lookout tower, two Maas river crossings, and a relaxed village drink stop. **📍When and where to meet?** We’ll meet at 11h15 at Busstop "Afferden, Veer naar Sambeek" https://maps.app.goo.gl/kcg4hBvRsHoUjBSa6 ⏰ **We start walking a few minutes after meeting up** We don’t wait for latecomers, as we have a long route ahead and want to enjoy the full day properly. **🚗 Coming by car?** Please check your parking options beforehand so you arrive on time. **⏸️ Planned Breaks** After **4 km:** break at watchtower (5 min) After **7 km:** Having a lunchbreak at ruins of Castle Bleijenbeek (25 min) After **13 km:** Ferry over the Maas After **14 km:** Drinks at bar in Vierlingsbeek (50 min) After **20 km:** Ferry back over the Maas (bring small change to pay the ferry) I still need to confirm or make a reservation at the bar. **💸 Payment** Please pay as soon as you sign up: To keep things fair for everyone, if we don’t receive your payment within 48 hours, we will need to remove you from the participant list. If there’s a waiting list, this will happen sooner (in less than 48 hours). If that happens, no worries — you’re always welcome to sign up again if there’s space. 🌟 Early Bird Deal! Join now for just €4 — available for 3 days (72h). After that, the price will be €5. Please pay here: [https://tikkie.me/pay/hn1r44v9kl99o9agck71](https://tikkie.me/pay/hn1r44v9kl99o9agck71) **👟 Good to know** * Refund policy: Cancellations are fully refundable up to 1 week before the event (This is Friday 5 June at 23h59). After this period, the fee becomes non-refundable. * Hike difficulty: Our hikes are moderately challenging. Please only join if you’re confident you can keep up with the group’s pace (5 km/ h)— it’s more fun for everyone when we can walk together without long waits. * If the pace is too challenging: We may kindly suggest you continue at your own pace. We’ll give you clear directions to the nearest bus or train so you can return comfortably. * At your own risk: You participate at your own risk, so please make sure you have appropriate insurance coverage for outdoor activities. * Payment note: With Tikkie we only see initials (e.g., J. Doe instead of John Doe). Please include your Meetup name in the payment note so we can match it easily. * Friends joining: If you bring a friend, make sure they also register and pay. * What to bring: Snacks and enough water * Stay connected: Join our WhatsApp group to be the first to hear about future hikes — ask for the QR code during the hike. * T-shirts: Fairwear-certified organic cotton, eco-friendly inks — €25. Sustainable, odor-resistant, and perfect for hiking. Let us know your size and we’ll bring one for you.

This hike is one you don’t want to miss! It offers a lot of variety on a relatively short distance. From train station Rhenen, we will cross the river and walk along it for a while, until we cross it again by ferry, taking us to the beautiful wetlands of the ‘Blauwe Kamer’, where we might encounter all kinds of wildlife. After a break, we will continue to climb the Grebbeberg, a 52 meter peak in the hilly forest, towering above the river. We will then return to Rhenen, with the option of visiting this pittoresque old town. **Where to meet**: we will meet at **10.30am** at train station Rhenen. This train station can be reached by Sprinter train from Utrecht Centraal. **This hike is fully booked.** [You may register for a place on the waitlist on my website.](https://rewildyourself.nu/dutch-nature-hikes/)

Ik organiseer wederom Verraders en Geesten! Midden in de natuur spelen we dit, wat vooral erg gezellig samen is en met veel vrijheid. 3 Verraders in de groep. Kan jij ze eruit pikken? Geheel verzorgd. Super tof om dit samen te doen🥳 ik ben de spelleider en de sfeer en dynamiek bij zo'n dag zijn altijd top! Kaartjes kan je kopen op de website van WeekendHet(.nl), daar staat ook veel meer uitleg van wat het inhoudt. Mochten er vragen zijn laat maar weten! Er komen ook mensen van buiten MeetUp om samen een mooie dag te beleven😁

**For this retreat you need to register via our website: https://www.maitreya.nl/nl/programma/another-world-is-possible** **Another world is possible with Ven. Amy miller** **Green Tara Practice as a Path of Compassion in Action** Our external world today often appears littered with division, violence, and alienation. Rather than grow dismayed by external experiences that show cruelty and heartlessness, let us explore how our vulnerability can become a source of resilience and positive change. This long weekend retreat offers a meaningful pause, a chance to reconnect with inner strength, inner wisdom and compassion. The beautiful Green Tara practice explores a path of inner transformation by being present with our pain, fear, and aversion. This retreat incorporates Lam Rim (Stages of the Path) meditation along with the sadhana and mantra recitation of Green Tara. By opening our hearts in kindness to ourselves and others, the potential exists for our external reality to shift more beneficially as well. Join us for this nourishing long weekend of practice, reflection, and renewal—and become part of a shared path of compassion that brings benefit both within and beyond ourselves. Venerable Amy Miller is a beloved spiritual teacher, practitioner and Buddhist nun in the Tibetan tradition. She has dedicated her life to sharing the profound teachings of Buddhism with the world. With her gentle presence, insightful wisdom and compassionate heart, she has touched the lives of many around the world, inspiring them to find inner peace and help transform their minds. For more information about Ven. Amy Miller, [click here](https://www.maitreya.nl/nl/leraren/ven-amy-miller). You can join this retreat at our beautiful Buddhist Retreat Center in the greens - Loenen (Apeldoorn) and online.

**DDD Aggregates & Your ORM** **By Matthias Noback** Over time you've created lots of data models that are mapped to tables in your relational database. Now you want to untangle the "mess" using Domain-Driven Design practices and patterns. This is very exciting; you're planning to separate your business domain into smaller subdomains, implemented by so-called Bounded Contexts, with explicit boundaries. But you are using an ORM, and the ORM knows about Entities, but it doesn't care about Bounded Contexts. It allows you (and often requires you) to link remote concepts in the code, ruining those boundaries you imagined... In this presentation, we'll explore the real-world problems you'll run into when trying to apply Domain-Driven Design patterns in an average framework/ORM-oriented code base. We cover central DDD concepts, and indicate potential conflicts with the way frameworks and ORMs treat your data model. Of course, we'll also consider work-arounds and solutions. **PROGRAM** 18:00 - Doors open, pizza and drinks **19:00 - Talk & discussion** 20:00 - Drinks & networking **ABOUT** 🤝 This meetup is **free**. 🍕 Food and drinks are provided at **no cost**. 🇬🇧 The presentation is in **English**. 📸 We might take pictures at the event, to upload to the meetup page and the Full Stack socials. 📍[Europalaan 40, 3526 KS Utrecht, Avenue Building - 3rd floor (PAQT Office)](https://maps.app.goo.gl/EJdxchKTEoLuc5UeA) **ABOUT THE HOST** PAQT.com devises, builds, and maintains software from a business perspective. They develop software so organizations can evolve. For good software improves life. That’s the vision they commit to every day.

Want to be a speaker? submit your talk to our Call for Presenters!!! https://sessionize.com/azure-cbus-2026/

WQC has weekly Thursday night social nights at the Westerville Java Central. Come and grab a coffee and connect with the community: low stakes, chill environment, and tasty drinks. No registration is required; come as you are.

Come chat about Atlassian tools and best practices at the Reynoldsburg Sunny Street Cafe and Breakfast is on Atlassian! Let's get the day started off with breakfast with your ACE Leaders! We're always excited to talk about Atlassian Products, share our knowledge and hand out swag! Come chat with us about new product news and anything you are working on within the Atlassian product stack. This is a great opportunity to come see what we are all about, hear new business news and share with other Atlassian users your questions and experiences. We'd love to see new and old friends come out to chat and learn about Atlassian! Agenda --- Moderators Kimberly Deal - Columbus Atlassian User Group Leader Kevin Stanley - Columbus Atlassian User Group Leader Greg Sprowls - Columbus Atlassian Community Leader Hosted By Kimberly Deal, Atlassian User Group Leader Kevin Stanley, Chief Everything Greg Sprowls, Agility Lead --- Global Partner Atlassian (http://atlassian.com) Millions of users globally rely on Atlassian products every day for improving software development, project management, collaboration, and code quality. Partner Atlassian --- For over a decade, Atlassian customers have come together to network, share ideas, solve problems, and find new ways to use Atlassian products. Today, more than 15,000 people take part in Atlassian community events in more than 30 countries. --- Complete your event RSVP here: https://ace.atlassian.com/events/details/atlassian-columbus-presents-rise-and-shine-with-atlassian-reynoldsburg-5/.

Join the CONNECTED Westerville Mastermind Group for a dynamic afternoon of B2B networking! This event is perfect for professionals looking to expand their business connections, share insights, and foster collaboration within the community. Whether you are a seasoned entrepreneur or just starting out, this event offers a valuable opportunity to exchange ideas, build relationships, and grow your network in a supportive environment. Connect with like-minded individuals, explore potential partnerships, and discover new opportunities for professional growth. Don't miss out on this chance to enhance your business network and take your career to the next level with CONNECTED Westerville Mastermind Group! We meet the 4th Monday of every month from 11am-1pm. Welcome and general networking from 11am - 11:30am with core meeting 11;30 - 12:30 and a final round of networking from 12:30 - 1pm.

We are bringing Microsoft Build sessions to Columbus Ohio! The Central Ohio Azure Meetup and Central Ohio .NET Developer's Group (CONDG) are coming together to bring some of the labs and breakouts from Microsoft Build to your backyard. In this free, 1 day event, you are going to Build stuff with us! And yes, there will be free food. Please RSVP via [Microsoft Build //localhost:columbus | Microsoft Reactor](https://developer.microsoft.com/en-us/reactor/events/27247/).

**How to take control of your subconscious and harness its power!** Join us for an eye-opening lecture where the speaker will break down complex ideas in a clear and practical way. You’ll gain insights into: ✅ The true definition of the subconscious ✅ How it generates unwanted emotions ✅ Its real purpose and function ✅ What determines the pressure it exerts on you And the most important topic: **How do you take control of your subconscious!** But this isn’t just another lecture where you sit and listen passively. It’s interactive and engaging—you can ask questions at any time. 📅 Reserve your spot now! Seats are limited, so don’t wait too long to sign up. Location: 1266 Dublin Rd, Columbus, OH 43215 Hosted by the Hubbard Dianetics Foundation

Over a billion documents processed. Millions of Veterans impacted. Hundreds of thousands of employee hours saved. Faster decisions. Greater accuracy. More benefits in the hands of our disabled Veterans. We created Smart Search, the world’s largest consumer of Amazon Textract, right when GenAI began reshaping what’s possible. Since then, we’ve built a suite of AI‑driven solutions that transform this data into real, measurable outcomes—accelerating benefits decisions for our Nation’s Veterans. Join us for a focused conversation on how an outcome‑driven approach to AI is helping us boost accuracy, streamline workflows, and deliver faster results for those who have served. This is a follow up to the AWS re:Invent 2023 "Intelligent Document Processing with Gen AI for Public Sector" presentation. About Speaker: Cameron Williams is a Senior Technical Project Manager and cross-functional technical leader at Booz Allen Hamilton with 15+ years of experience architecting and evolving scalable, cloud-native systems, from greenfield development to complex enterprise modernization. https://www.linkedin.com/in/cameronw711/ **THANK YOU** *Franklin University* for hosting our meetup! To learn more about *Franklin University*, please visit their website: https://www.franklin.edu/ **DIRECTIONS** Franklin University Fisher Hall 300 E. Main St, Columbus, OH 43215 Map: https://maps.app.goo.gl/jxjBA2hUmS5qrvhq8 Parking is FREE! Please park in Lot C in front of Fisher Hall. See attached map. NOTE: Map the address only. When mapping with Google Maps it may use the Fisher Hall at OSU, which is NOT correct. **Want to sponsor the pizza and/or bar tab?** Please contact me if you would like to sponsor this meetup's pizza and/or bar tab: angelo@mandato.com