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Fine points of protection

In the article Some Sentences about Java I wrote that “Protected methods and fields can be used from classes in the same package (so far the same as package private) and in addition ...
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Use copy paste programming!

Copy paste is bad We hate copy paste. Why? Because the result code is unmaintainable. I get a bug reported from QA, I analyze the code, look at logs, debug, drink a lot of coffee and ...
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Outsourcing, Do It Right

Most of the times outsourcing is a nightmare. Companies outsource the activities that are not their core activity nevertheless needed for business to get the job done as cheap as possible. ...
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Why do we mock?

I do Java interviews. During the interviews I ask technical question that I know the answer for. You may think this is boring. To be honest: sometimes it is. But sometimes it is interesting ...
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Unit test life?

You can not program without testing. You write unit tests first and then you write your code. (Well, I know you don’t but just let’s focus on best practice.) When there is an error ...
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Some Sentences about Java

There is nothing new in this article. I just collected some trivial statements which may not be trivial for some of the junior programmers programmers. Boring old stuff. If you happen ...
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When null checking miserably fails

Disclaimer Before going on I have to state that the techniques described in this article serve no practical purpose when we program Java. It is like a crossword or puzzle. It main train ...
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Why to use String

Recently I was tutoring juniors during a training session. One of the task was to write a class that can dwarwle maps based on some string key. The result one of the juniors created ...
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Autoboxing

Autoboxing is clear for all Java developers since Java 1.5 Well, I may be too optimistic. At least all developers are supposed to be ok with autoboxing. After all there is a good tutorial ...
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A classloading mystery solved

Facing a good old problem I was struggling with some class loading issue on an application server. The libraries were defined as maven dependencies and therefore packaged into the WAR ...
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