What HUJAK does

HUJAK (Hrvatska udruga Java korisnika / Croatian Java User Association) is a Zagreb-based non-profit association, formally established in 2011 and active in the Croatian Java community since 2003. Its core offering is community programming rather than a packaged product: HUJAK organizes three recurring event properties — the annual international JavaCro conference (held in October at Island Hotel Istra near Rovinj, with the 15th edition JavaCro'26 scheduled for October 11-14, 2026 targeting 400 attendees and 70+ sessions), the semi-annual Javantura conference in Zagreb (co-organized with the IT Association of HGK, with the 8th edition planned for 2027), and a "Java dan/i" (Java Days) track embedded in the annual HrOUG (Croatian Oracle Users Group) conference. It also maintains a job board, certification support, and educational programming for Java developers in Croatia and the broader Central/Southeast European region.

The underlying "technology" is the community itself: HUJAK operates a website (hujak.hr), a LinkedIn Group (GID 4320174), a Meetup (Java-HUJAK), Twitter (@HUJAK_hr), Facebook, and an email newsletter, through which it distributes event programming, blog content, presentation slides, and certification resources. Its core products — JavaCro, Javantura, Java Days, and the membership benefit program — are all event- or membership-based services rather than software products, and there is no proprietary platform, codebase, or AI/ML infrastructure disclosed.

The business model is a typical non-profit association revenue mix: annual corporate and individual membership dues, paid conference ticket sales, sponsorship packages (multiple tiers for JavaCro and Javantura), and vendor-funded training partnerships such as the Vaadin workshop collaboration. Membership benefits include one free JavaCro pass per year for company members, discounts on additional passes, free tickets to partner conferences (JCON EUROPE, JCON OpenBlend Slovenia), and discounts on HrOUG. Pricing is not publicly disclosed and the association is governed by its members, with Branko Mihaljević listed as president. No funding rounds, revenue figures, or paid-capital transactions are reported; corporate members named include Infobip, Amphinicy, Perzej, Evolva, and CROZ.

Name

HUJAK

Legal name

HUJAK - Hrvatska udruga Java korisnika

Website

https://hujak.hr

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

HUJAK is a Zagreb-based non-profit association that organizes the annual JavaCro international conference in Croatia, the Javantura Zagreb conference, and Java Days at HrOUG, serving individual Java developers and corporate members with networking, certification, and training resources across the Central and Southeast European region.

Ownership category

akta.pro rank

GTM type

B2B and B2C

Offering type

Services

Cost components

Operations, Marketing or Sales, Personnel, Others

Pricing tiers

Distribution channels2 records

Marketing channels8 records

Core offering

HUJAK (Hrvatska udruga Java korisnika / Croatian Java User Association) is a non-profit professional association that organizes Java conferences (JavaCro, Javantura, Java dan/i), provides educational workshops, certification support, job postings, and networking opportunities for Java developers and IT professionals in Croatia and the broader Central and Southeast European region. It offers corporate and individual membership programs with benefits including free/discounted conference passes, speaker opportunities, and community recognition.

Product overview

HUJAK (Hrvatska udruga Java korisnika / Croatian Java User Association) is a community nonprofit organization that serves the Java developer community in Croatia. It is not a product company but provides community services including organizing three main conference events: the annual international JavaCro conference (October in Rovinj, now in its 15th edition), the Javantura conference (semi-day format in Zagreb, planned for 2027), and co-organizing Java dan/i (Java Days) as part of the HrOUG conference. HUJAK also provides member benefits including discounted or free access to partner conferences (JCON EUROPE, JCON OpenBlend Slovenia), educational programs, certification support, and a platform for networking among Java professionals. The organization maintains partnerships with international Java user groups and serves as a hub for the Croatian Java community.

Differentiator

Problem solved

Functional benefit

Brands

• JavaCro: International Java Conference in Croatia, the main annual Java conference organized by HUJAK
• Javantura

Products and services

• JavaCro Conference Annual international Java conference in Croatia held each October in Rovinj (Red Island), attracting approximately 400 attendees from multiple countries with 50-70+ sessions across tracks including Core Java, AI & Java, Web & Mobile, Methodologies & Tools, Technologies & Solutions, Trends/Future/Community, Best Practices, and Workshops/Training. Targeted at Java developers, software architects, and project managers.
• Javantura Conference Half-day Java community conference held in Zagreb, co-organized with the IT Association of the Croatian Chamber of Commerce (HGK). Provides networking and learning opportunities for the local Java community; planned 8th edition expected to host 250 attendees and 30 sessions.
• Java dan/i (Java Days) Java-themed track organized as part of the annual HrOUG (Croatian Oracle Users Group) conference, co-organized by HUJAK. Typically spans 2 days with presentations from HUJAK members and international speakers, bringing together Java and Oracle technology communities.
• HUJAK Membership Program Annual membership program for individuals and corporate members providing free or discounted access to JavaCro, JCON EUROPE, JCON OpenBlend Slovenia events, educational program discounts, certification support, and community networking. Corporate members receive one free JavaCro conference pass per year plus discounts on additional passes.

Quantifiable outcome

• JavaCro conference attracts 400+ attendees and 50-70+ sessions annually
• +3 more outcomes

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Nine partnerships are on record, tiered core and minor.

• JCON Europe / Java User Group OberpfalzcoreStrategic or Co-development PartnerJCON is a premier Java community conference in Germany organized by Java User Group Oberpfalz. HUJAK members receive free tickets to JCON EUROPE conferences through a partnership code ('HUJAK'). The partnership provides HUJAK members access to international Java learning, networking, and professional development opportunities.
• JAVAPRO MagazineminorGTM or Marketing PartnerJAVAPRO is a Java technology magazine. The magazine collaborates with JCON and HUJAK to provide content and cross-promotion of Java community events in Europe.
• OpenBlend (Slovenian Java User Group)coreStrategic or Co-development PartnerOpenBlend is a Slovenian Java user group that co-organizes JCON OpenBlend Slovenia conference with JCON. HUJAK collaborates with OpenBlend and members receive special discounts to their conferences. The partnership facilitates regional Java community building.
• SIOUG (Slovenian Oracle Users Group)minorStrategic or Co-development PartnerSIOUG collaborates with JCON and HUJAK on the JCON OpenBlend Slovenia and MakeIT conferences, bringing together Java and Oracle technology communities.
• HrOUG (Croatian Oracle Users Group)coreStrategic or Co-development PartnerHrOUG is a partner organization with which HUJAK co-organizes the 'Java dan(i)' (Java Days) track at the annual HrOUG conference. HUJAK members receive discounts on HrOUG conference attendance.
• VaadinminorGTM or Marketing PartnerVaadin, a Java web framework company, partnered with HUJAK to deliver training workshops in Zagreb. HUJAK members received significant discounts on Vaadin training courses.
• JavaCro ConferencecoreStrategic or Co-development PartnerJavaCro is the premier international Java conference in Croatia organized by HUJAK. The conference has been held annually since 2012 and attracts 400+ attendees from multiple countries. Conference tracks cover Core Java, AI & Java, Web & Mobile, and more.
• Javantura ConferencecoreStrategic or Co-development PartnerJavantura is a half-day Java conference in Zagreb co-organized by HUJAK and the IT Association of HGK (Croatian Chamber of Economy). The conference provides networking and learning opportunities for the local Java community.
• Partner Organizations NetworkminorOthersHUJAK has partnerships with multiple Croatian IT organizations including Agile Croatia, DEKRA, Kompetencijski centar za programsko inženjerstvo, HROpen (Croatian Open Systems Association), HULK (Croatian Linux Users), and SORA. Informal communities include CodeAtSix, FlashR, Java Zagreb Meetup, and ZgPHP Meetup.

Recent moves6 records

Expansion highlights5 records

Direct peers

• SIOUG (Slovenian Oracle Users Group): Slovenian Oracle Users Group collaborating with HUJAK on the MakeIT conference. Mirrors HUJAK's nonprofit technology user-group structure in the Slovenian market and is an existing partner.
• BeJUG (Belgian Java User Group): Belgian Java User Group with a similar conference-plus-meetup model. Representative of mature European JUGs that HUJAK could evolve toward in scale and international recognition.
• Paris JUG: One of Europe's largest Java User Groups, running the long-running Paris JUG meetup series and associated events. Operates the same JUG model as HUJAK at significantly larger scale and serves as a useful comparison point for trajectory.
• London Java Community: Established UK Java User Group running regular meetups and community events. Comparable in mission and structure to HUJAK but operating in a much larger developer market with stronger corporate sponsorship base.
• OpenBlend (Slovenian Java User Group): Slovenian Java user group co-organizing JCON OpenBlend Slovenia. Operates an identical JUG-plus-conference model in an adjacent Balkan market and is a confirmed HUJAK partner, making it the most relevant regional peer.
• JCON Europe / Java User Group Oberpfalz: German-based Java User Group organizing the JCON Europe conference. Operates the same JUG-plus-conference model as HUJAK, with reciprocal membership access; the closest direct peer in Western Europe and an existing strategic partner.
• HrOUG (Croatian Oracle Users Group): Croatian Oracle-focused user group that co-organizes the Java Days track with HUJAK and offers reciprocal member discounts. Closely mirrors HUJAK's structure in the same geography and audience, but focused on Oracle/database technologies.

Regional players

• HROpen (Croatian Open Systems Association): Croatian association promoting open systems and open standards, also a listed HUJAK partner. Adjacent nonprofit technology user-group with overlapping membership in the Croatian IT community.
• HULK (Croatian Linux Users): Croatian open-source/Linux community association, listed as a HUJAK partner. Operates the same nonprofit community-association model in Croatia but focused on Linux/open-source rather than Java.

Broad incumbents

• Java User Groups Inc. Oracle-affiliated global umbrella that coordinates and supports hundreds of JUGs worldwide, including by providing speaker/sponsorship matchmaking. Provides an important ecosystem context for HUJAK's positioning and access to international speakers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/HUJAK_hr
• Facebookfacebook.com/HUJAK.hr
• LinkedInlinkedin.com/company/hujak---hrvatska-udruga-java-korisnika-croatian-java-user-association-

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about HUJAK