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 ...

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 ...

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 ...

Have you ever wondered how Java seamlessly combines its primitive data types with object-oriented programming? Enter wrapper classes, an important but often overlooked Java feature. These special ...

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, ...