Imagine you are an expert object-oriented Java developer who meticulously crafts code the way an artist cares for their masterpiece. You believe clean code is an absolute necessity. Classes with clear ...

Today I’m going to blog about persisting hierarchies (tree-like structures) in relational databases. Actually not persisting, but more retrieving — as you most probably know hierarchies are stored in ...

The first half of this introduction to Java inheritance teaches you how to use the extends keyword to derive a child class from a parent class, invoke parent class constructors and methods, and ...