What we’re about
The Garden State Java User Group, Inc. (formerly the ACGNJ Java Users Group), in continuous operation since February 2001, is a 501(c)(3) non-profit organization that provides a forum to promote the use of Java platforms, APIs, and language. We strive to facilitate interactive discussions and exchange of ideas relating to the application of Java.
Topics will primarily focus on JVM technologies such as Java EE, Jakarta EE, MicroProfile, Spring, Groovy and Kotlin. Topics on non-JVM technologies such as Meteor, AngularJS, and Rust may occasionally be presented.
We are proud members of the MicroProfile Working Group and the Jakarta EE Ambassadors and have adopted the Jakarta NoSQL specification.
All meetings are generally held on the second Tuesday of the month, but may change due to speaker availability. In-person meetings are usually held at Drew University in Madison, New Jersey. On-line meetings are held via our YouTube channel.
Upcoming events
1
Proxy Power: Boosting Java App Performance with Open J Proxy
Dorothy Young Center for the Arts, Lancaster Rd, Madison, NJ, USPlease note that registration via EventBrite is required for in-person attendance. Also, we will not be livestreaming this meeting, but the recording will be available afterwards.
We are happy to announce that Rogério Robetti will be our special guest for this second (of two) meetings in December.
Abstract
Open J Proxy (OJP) is an open-source project that rethinks JDBC data source interactions for Java applications. By providing built-in backpressure through controlled connection handling and a built-in circuit breaker, also introducing slow query segregation - ensuring long-running queries cannot monopolize the pool resources - OJP delivers predictable performance, improved fault tolerance, and stronger reliability.
With seamless integration into modern Java stacks, OJP empowers developers to build database-driven systems that remain responsive under heavy load.
Bio
Rogério Robetti is a Lead Software Engineer with over 18 years of experience building and leading engineering teams in the financial and technology sectors. Based in Dublin, Rogério has contributed to the success of organizations like Mastercard, Bank of America, and Huawei, and is a recognized advocate for modern software architecture and best practices in Java development.
He’s a published author, holds several industry certifications, and is passionate about mentoring and innovation. In 2025 Rogerio founded the Open J Proxy (OJP) project.6 attendees
Past events
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