In a previous Java 101 tutorial, you learned how to better organize your code by declaring reference types (also known as classes and interfaces) as members of other reference types and blocks. I also ...

As an alternative to rewriting the same code, many software development environments provide a library tool that organizes frequently used code. Once developers finish debugging some reusable code, ...

Java is an object-oriented programming language. To create objects and meaningfully initialize them, a developer must use a Java constructor. Constructors are a critical part of software development ...

The release of Java SE 15 in Sept 2020 will introduce "sealed classes" (JEP 360) as a preview feature. A sealed class is a class or interface which restricts which other classes or interfaces may ...