Java Challenge by Groupe Open

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Hosted by:
From 13/03/2017 to 14/04/2017

Challenge closed !

Time to complete:
Maximum 600 seconds
Number of questions:
Bonus available:
  • 50-50
  • Ask the challengers
First prize:
  • 1st: Flight tickets (value 1000 euros)
  • 2nd: Oracle certification
  • 3rd: IntelliJ licence
  • 4th: 6 bottles Patache d'Aux 2011
  • 5th and 6th: Magnum Champagne
  • 7th->50th: Cinema tickets
5 + 1 =
Java Challenge by Groupe Open

Do you think you are capable of becoming Belgium’s champion Java? From March to April 2017, the company Groupe Open organizes in Belgium the first Java challenge.

The first round is played online. Our finalists will then compete for the 2017 Champion Java title at the end of April.

How to participate?

Registration is open during the entire duration of the challenge. You only need to register on EDITx.

How is the challenge organized?

You will have 10 minutes to give the correct answer to as many questions as you can. The questions will be multiple-choice with one or multiple good answers.

The challenge allows two options: the "50/50", in which the computer eliminates half of the answers and "Ask the Challengers", in which the percentage of the challengers choosing each specific option is displayed to you.

After you complete the Java, you will see your result for that Challenge immediately, but not the answers. We are emailing the details of the scores to all players at the end of the Challenge, so that the answers can't be shared among players during the Challenge.

At the end of this round there will be 12 finalists. If you are qualified or if you rank among the 25 best participants, your name, first name and score will be posted on the leaderboard and announced to all the challengers via the Challenge Results email. There will be two leaderboards: a global leaderboard ranking all the participants and a leaderboard dedicated to the students. The name and firstname of the 20 best students will be visible to anyone at the end of the challenge.

Members of the jury & Generous Contributors of this challenge:

Pierre Bettens
IT Teacher - Maitre-Assistant at ESI
Sacha De Maere
Project Director at OPEN
Adrien Dessilly
Project manager at Civadis
Jean-François Henrard
Senior Analyst Developer at Groupe Open Belgium
Frédéric Hubin
Senior Java Architect at ING Belgium
Daniel Penninck
Software Architect at Groupe Open Belgium
Ludovic Saublains
Senior Java Developer at Groupe Open Belgium
Gregory Seront
IT Professor at Institut Paul Lambin
Jos Snellings
Director at Upperware
Terms and Conditions: 


Participants must be over 18 years old and be Belgian residents. All the developers are allowed to compete. One registration per person is authorized. The participant can only compete in his own name and not for someone else. Personal information of the participant may be checked through different sources. Personal information must be accurate. Inaccurate or false information given by the participant will invalid the registration or entail the loss of the Prize.

Data privacy

In the context of this competition, the following personal data about the participants will be collected and processed: name, address, date of birth, email address, telephone number and possibly Linkedin profile. The organizers’ servers will automatically save specific data such as: adress, date and time. Personal data are collected, processed and used for the following uses:

  • To unable and oversee the correct competition process;
  • To analyze and optimize EDITx

EDITx Regulation and general conditions

Cookies, intellectual property, data privacy, responsibility, applicable law and court jurisdiction: for more information, see Challenge terms, Terms of Use and Privacy Policy.