Java (programmation)

We are a real world Martial arts group. \ Called DO JUNG ISHU (the art of fighting) \ Based off of Jeet kune do we just continued where Bruce Lee left off. \ We have been around a while. \ We are donation based. Every week we get together and work technical skills and live pressure testing. \ Almost all of the instructors have been in everything from altercations in the real world to the ring and some still compete in the cage. \ If you want to take your skills up, improve your confidence, gain self defense skills, get in better shape, test yourself or just want to kill some time and possibly get hit a bit come on down. \ We will be located at 3923 N High St, Columbus, OH 43214 inside the whetstone rec center in the auditorium, upstairs in classroom B or outside in the grass between the playground and horseshoe area. our instructors are normally in a black and red art of fighting shirt \ if you can not find us call or text me at 6143570295 Saturday 1pm Wednesday 5:30pm From Age 16 and up. attendees under the age of 18 must have a guardian with them. \ \ You must have a free leisure card for the rec center and must be registered for our class specifically .\ Wear workout clothing \ Bring a MOUTHPIECE! \ WE HAVE GLOVES. \ Hope to see you soon :-).\ We are run off of donations. \ let me know if you have any questions :)

#### Turning Rentals Into Income: How Investors Pay Off Properties Faster #### **Featuring Guest Speaker: John Blackburn** **👉 Get your FREE TICKET [HERE](https://www.eventbrite.com/e/turning-rentals-into-income-how-investors-pay-off-properties-faster-tickets-1980492192461?aff=cicmeetupapp)** #### A lot of people get into real estate because they want freedom. Then they buy a rental…and realize most of the rent goes straight to the bank. They technically own property, but the mortgage controls the income. And waiting 30 years for properties to be paid off doesn’t feel realistic. This meetup is about understanding a different way to think about rental properties… one that focuses on paying them off sooner so the income is actually usable. **Featured Guest Speaker: John Blackburn** We’re excited to welcome John Blackburn as our guest speaker for this event. John has been actively investing in real estate since 2006 and has: * Been involved in **5,000+ real estate transactions** * Helped investors **acquire over $150 million in rental property** * **Raised more than $100 million** in private capital John didn’t start with family money or shortcuts. He built his portfolio by focusing on clear systems, real numbers, and long-term strategy. For this meetup, John will walk through how investors shift their focus from simply owning rentals to building properties that eventually pay them…without a mortgage attached. **What You’ll Learn** John will break down, in simple terms: * Why most rental properties don’t produce much usable income early on * Why buying more rentals isn’t always the answer * How investors structure their properties to pay off mortgages in a fraction of the time * How properties can work together to eliminate debt faster * What changes once rentals become free and clear This approach is often referred to as an accelerated paydown strategy — using rental income intentionally to reduce debt sooner, rather than waiting decades for mortgages to run their course. John will also share a simple calculator you can use to see how this works with real numbers and realistic scenarios. **The Core Idea** When a rental has a mortgage, the rent has one job: **pay the bank.** When a rental is paid off, the rent has a different job: **pay you.** Most people only see one timeline…30 years. This session shows how investors shorten that timeline and gradually increase their income as properties become free and clear. **Who This Event Is For** This event is for people who want more than just “owning rentals” on paper. * Rental owners who are tired of most of the rent going to the bank and want a clearer path to real, usable income * New investors who want to understand how rental properties actually build wealth over time before jumping in * People with capital who want to invest in real estate with intention and a long-term plan * Anyone serious about freedom and curious how rental properties transition from debt-heavy assets into income-producing ones **Event Details** **Location:** Ohio Brewing Company - 421 E 2nd Ave, Columbus, OH 43201 **Date & Time:** January 25th, 6–8 PM (Doors open at 5:30) **Cost:** Free (Seats are limited - RSVP required) **👉 Get your FREE TICKET [HERE](https://www.eventbrite.com/e/turning-rentals-into-income-how-investors-pay-off-properties-faster-tickets-1980492192461?aff=cicmeetupapp)** If you’ve ever wondered how rental properties actually turn into freedom —this is the room to be in.

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

**New Dojo Location!** **Draft Day Columbus** 1130 Dublin Road Columbus, OH 43215 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for topic suggestions and people interested in presenting at our monthly meetings. To this end we've set up a survey form at [https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc](https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc)

Whether you've never done improv before, or you've done it for so long you knew Del Close on a personal level, or anywhere in between, come join us! Swing by *Gresso's* for the **Columbus Improv Comedy Meetup** for some fun and games! The idea behind improv is to create entire scenes from scratch based on a suggestion from the audience. This can be done in game form, like *Whose Line Is It Anyway*, *ComedySportz*, or *Wild 'n Out*; it could also be done to tell stories, like *Middleditch and Schwartz*. Our meetup, which is central Ohio's longest running (and free!) weekly comedy event, brings the games (and occasionally different forms) for you to play in a safe, supportive, and compassionate environment. Not only is it a lot of fun, but you get to work on thinking faster on your feet, plus it's an excellent way to meet new people and make friendships that'll last a lifetime! Ask yourself if you want to join the **Columbus Improv Comedy Meetup**, and say "Yes, And" that you'll have fun!

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** *Spec-Driven Development with GitHub Spec-Kit: From Intent to Implementation* Spec-driven development flips the traditional workflow on its head: instead of code being the source of truth, the specification becomes the backbone of design, collaboration, and delivery. In this session, we’ll explore how GitHub Spec-Kit enables teams to treat specifications as first-class artifacts—living documents that drive architecture, implementation, and verification. You’ll learn how Spec-Kit helps teams clearly express intent using structured, version-controlled specs that live alongside code. We’ll walk through a practical workflow that starts with defining system behavior and constraints, then progressively refines those specs into testable, automatable outcomes. Along the way, we’ll show how specs can reduce ambiguity, improve cross-functional collaboration, and make design decisions explicit before a single line of production code is written. This talk will cover: --What spec-driven development is (and what it isn’t) --How GitHub Spec-Kit fits into modern developer workflows --Using specs to align product, engineering, and AI-assisted development --Real-world examples of turning specs into implementations with confidence Whether you’re building greenfield systems, integrating AI into your stack, or trying to reduce costly rework, spec-driven development offers a scalable way to move faster without sacrificing clarity. Attendees will leave with concrete patterns and a clear mental model for adopting GitHub Spec-Kit in their own projects. **YouTube Link** TBA

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-4/.

Join us and work remotely together with like-minded UX folks. This is a last minute opportunity to get out at one of our favorites, [Junto](https://thejuntohotel.com/)! Plenty of seating is available in addition to a connected coffee shop and restaurant. I will be there 10-12 for sure, maybe longer. Feel free to come and go anytime during the day, and don't forget your charger and headphones!

# **The Ostrich Social** #### **3408 Indianola Ave** BYOB / Pizza will be provided so Please RSVP Dresden Stammtisch is a monthly social gathering for members and friends of Dresden Sister City, Inc. The event is free and open to the public. We speak German or English - it is largely up to you!

Meeting @ Improving's office in Downtown Columbus, near Cosi. Parking is paid, food & drink are free! This time we're hanging out after the long winter break. We are going to look at a group-member's project used to help learn the fundamentals of Go, and if time allows, we can take a look at how we like to build Go projects using AI.

Come out to Improving for our monthly iOS and Mac meetings. This Month's Presentation: Nothing yet. (You should volunteer). What is Cocoaheads (http://cocoaheads.org/)? CocoaHeads is a group devoted to discussion of Apple Computer's Cocoa Framework for programming on MacOS X and iOS (including the iPhone, iPad and Apple Watch). During monthly meetings, members present on their projects and offer tutorials on various programming topics. What is BuckeyeCocoa (http://buckeyecocoa.org/)? BuckeyeCocoa is a group of Objective-C/Swift developers/enthusiasts. We host monthly Cocoaheads and near-weekly NSCoder meetings in Columbus, Ohio. The meetings are free to attend. Presentations! Presenters welcome! We are always in need of people willing to present material. Any Swift and/or Objective-C related topic is welcome. Times can be 5 minutes (i.e. lightning talks) to a maximum of 2 hours. Interested? Contact info is on the BuckeyeCocoa website. To volunteer for a presentation contact us at @BuckeyeCocoa on Twitter. Follow us on Twitter! @BuckeyeCocoa (https://twitter.com/#!/Buckeyecocoa/) For more information: http://buckeyecocoa.org/

Columbus Code & Coffee is an inclusive, informal co-working session. People of all skill levels attend, and we love it that way. Many people (optionally) bring projects to work on, and many other people (optionally) socialize the entire time. It's entirely up to you! **What to Expect at the Intro Circle** \~\~\~\~\~\~\~\~\~\~\~\~\~ Near the beginning of the event (1:30 pm), we do a standup: * Organizer announcements, updates, and logistics Round 1 - (7 secs max): * Your name * What you're working on * What you can help others with Round 2: * Community events you wanna plug. If none, that's cool too. Round 3: * Job opportunities you're hiring for OR announce that you are looking for one. If none, that's cool. After the introduction circle, everything is self-organized! Feel free to work alone, pair up, attend one of our workshops/presentations, or mingle!

Christians in Tech is a community at the intersection of faith and technology. Our meetups are designed to spark meaningful conversations, promote knowledge sharing, and encourage growth—both in your career and your spiritual walk with God. Whether you're an experienced professional or just starting your tech journey, CIT welcomes you. Our Website [https://linktr.ee/citcbus](https://linktr.ee/citcbus) Sponsors and Partners * Improving (Venue Sponsor) * Bethel World Prayer Center (Fiscal Sponsor) * Fruits & Roots (Coffee Partner)

We will show a variety of methods for building agents that run in Microsoft Foundry. This covers the different types of agents: Prompt, Multi, and Hosted, as well as the development lifecycle using evals and traces.

Our monthly PHP meetup. A virtual shindig courtesy of Zoom. Check back here for the details around 6:15 pm