Java recently celebrated its 30 year anniversary. Despite its age, the language is still going strong and maintains its ...

Classes, fields, methods, constructors, and objects are the building blocks of object-based Java applications. This Java tutorial teaches you how to declare classes, describe attributes via fields ...

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 ...

This lesson starts a new segment about Object ... number of class instances called objects. The video illustrates several ways of creating and manipulating Shape objects. OOP is not the use of any ...

The release of Java SE 15 in Sept 2020 ... the overhead of declaring bulletproof abstractions can sometimes exceed the benefit. Sealed classes like Shape commit to an exhaustive list of possible ...

Only a few weeks ago, China, where the outbreak began, was the only country to suspend classes. But the virus has spread so quickly that by Wednesday, 22 countries on three continents had ...

Although the snooze button is probably the most commonly used button on an alarm clock, even a simple AlarmClock class needs a few more features. For instance, you might want to control how long ...

Kotlin, unlike Java, supports the “composition over inheritance” design pattern, via first-class delegation (sometimes known as implicit delegation). Delegation is where a receiving object ...