There are several ways to find duplicates in a Java List, array or other collection class. The following list describes some of the most commonly used approaches: Use a method in the Java Streams API ...

Java interfaces are different from classes, and it’s important to know how to use their special properties in your Java programs. This tutorial introduces the difference between classes and interfaces ...

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, ...