I started using Oracle and Java, in 2003.
Since then, some more exams have been passed: Certified Oracle 9i DB Associate, Sun Certified Java Programmer for the 1.4 platform, CompTIA Project+ certified professional.
As far as previous experience is concerned, I have participated in large Greek and German public sector projects, having stakeholders such as the Deutsche Bahn, Bundesagentur für Arbeit, the Ministry of marine navigation, Ministry of economics and finance, Ministry of transport, national telecommunication organization (OTE group), the Greek Army and lastly the National Radio Television Council (ESR).
As far as the site content is concerned, every possible effort has been made to provide exact, accurate information. However, to err is human, hence you are encouraged to report any errors or misspelling etc. Any source code is given without any warranty of any kind, and mostly refers to free code source of books, available online. If an author reports that his/her copyright has been hurt, I shall immediately delete the code in question. Finally, the readers may reuse any code presented here, as long as they explicitly mention the origin of it, that is the blog URL.