This Java tutorial teaches you how to declare classes ... type name in the method’s/constructor’s parameter list: A class’s body is composed of interface and implementation.

The release of Java SE 15 in Sept 2020 will introduce ... or implicitly final (such as enum and record classes.) A sealed class has a permits list, which are the only permitted direct subtypes ...

Type erasure in Java generics programming can cause a variety of problems in your code. Fortunately, there are ways to work around them. Generics programming in Java enhances type safety and code ...

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 ...