About Johannes Thones

Johannes is a Software-Developer, ThoughtWorker, Permanent Journeyman, Ruby Enthusiast, Java and Devils Advocate. He lives and works in Hamburg, Germany.

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HTML5: Offline upload of images

I am currently working on an application which has needs to work offline. This has the beneficial side effect, we use the different HTML5 storage capabilities. One of the is the File API, which we are using to store images locally ...
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Hunting a Random Bug – A True Story

A few weeks ago, I finished a bug hunt for the RapidFTR open source project, which took me three evenings. I thought it might be worth sharing the story of the hunt. This article will describe what I did. I will give an overview o ...
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Java 8: Testing the Lambda Water

Java 8 is about a year away and comes with a language feature I really look forward to: Lambda Expression. Sadly the other big feature, Modules for the Java Platform, has been delayed to Java 9. But nevertheless, bringing lambda e ...
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14 Golden Eggs of Good UI Design

As I discussed, I have been to “Rules for Good UI Design” by Joe Nuxoll (@joeracer) at Devoxx 2011. In this talk, he was giving 14 “Golden Eggs” for designing a user interface (UI). The “Golden Eggs” have been written ...
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Java 8 Status Updates

The two big new language features of the upcoming Java SE 8 release are Lambda Expressions and Modularity. For both, status updates have been released these days. I’ll share the links with you, so you might read through them ove ...
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