Archive for category: Java Competence

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Trading System Development

Trading Systems

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Trading System Development - Part 1 I assume you know programming (maybe you are even a professional developer) and you have that trading itch. You probably have been trading manually with your broker here and there, but decided to step…
devoxx-krakow

Java Conference – Devoxx Poland 2015

Thanks to Payara we participated in the first edition of Devoxx Poland, on June, 22nd-24th, 2015 in Kraków, Poland. Last year we were on its ancestor — 33rd Degree (see our report of day 1 and day 2). What do we think about it? What changed?…
33rd degree poland

33rd Degree 2014 — Day 1

On June, 9th — 11th, 2014 we were attending 33rd Degree conference in Cracow, Poland. In this series of posts, we’ll share our thoughts on the conference and particular talks. Besides, we’re going to point out the most interesting parts…
33rd degree poland

33rd Degree 2014 — Day 2

Day 2 was in our opinion the best day of the conference. It was literally packed with strongly technical, valuable content. However, the starting talk did not promise that at all. So, let’s start! Power to the Programmers by Tom Gilb Have…
puppet-software

Model-Driven Infrastructure for Java Projects

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Java software-development projects are our daily business. For us it's a common task to setup different environments for dealing with the specific needs of our customers. While we treat every customer individually we want to keep setup time…
pivotal

Going Pivotal

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Recently we deployed several applications to Pivotal Cloud-Foundry (CF). Deployment was pretty smooth for our Grails and Spring-based applications. Because we had issues deploying JDK-7 applications to heroku as it is using jdk 1.6 as default…
jooq logohttp://www.jooq.org

Using jOOQ with Spring Transactions

Update 10.02.2014: Recently, Lukas from the jOOQ development team has created a sample GitHub project on how to set Spring + Guice up. Please, refer comments. Recently, we decided to introduce jOOQ to our project. Mostly,…
grails framework

Groovy meta-programming and Grails Artefact-API

The list of transient property names in Grails domain-classes can get quite long in bigger setups. Also often multiple domain-classes share the same transient references so there are many places to keep synced when refactoring or extending. An…
cloud

IllegalStateException in Amazon SDK for Java

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In one of our projects we need to communicate with Amazon S3. We use the SDK for Java provided by Amazon itself. The library incorporates Apache HttpComponents for managing HTTP and associated protocols. We noticed there was an issue…
grails framework

Groovy XmlSlurper for HTML Parsing

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Very common task: you need to parse XML. When using groovy there is groovy.util.XmlSlurper for that. We know that HTML is just a special XML - but when you have to parse from online ressources you have to assume that it's never well-formed.…