However, because of Java’s strong typing, you need to know this for sure right from the start and declare the variable correctly. Using a Boolean is the most efficient of all, as it only takes ...

Java SE 10 (March 2018) introduced type inference for local variables. Java Language Architect Brian Goetz explains the feature.

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 ...