Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs.

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 ...

The release of Java SE 15 in Sept 2020 will introduce "sealed classes" as a preview feature. A sealed class is a class or interface which restricts which other classes or interfaces may extend it.

Java would become easier for students to learn under a proposal to introduce flexible main methods and anonymous main classes to the language. This is a preview language feature, disabled by ...

He has led software development projects to build enterprise-class software applications and has extensive experience with Java and Perl. He is the author of several Java books, including one called ...