Why NULL is Bad?

A simple example of NULL usage in Java:                     public Employee…

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OOP Alternative to Utility Classes

A utility class (aka helper class) is a “structure” that has only static methods and encapsulates no state. StringUtils, IOUtils,…

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Typical Mistakes in Java Code

This page contains most typical mistakes I see in the Java code of people working with me. Static analysis (we’re…

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Objects Should Be Immutable

In object-oriented programming, an object is immutable if its state can’t be modified after it is created. In Java, a…

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How much do you pay per line of code?

Yes, I know, “line of code” (LoC) is a very wrong metric. There are tons of articles written about it,…

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