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 ...

Java developers can now enhance the ... A safer and more efficient solution would be to introduce a first-class, template-based mechanism for composing strings that automatically applies template ...

However, a proposed third preview of string templates, featured in JDK 21 and JDK ... designed to provide custom operations for the stream API, and a new class-file API for developers working with the ...

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 ...

Wouldn’t it be nice if all Java classes that you use, including your own, lived up to their promises? In fact, wouldn’t it be nice if you actually knew exactly what a given class promises?