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 ...

Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs.

I wanted to check if BlobContainerClient can be assigned as global variable per container in a singleton class. Also I wanted to check if there are any performance implications like thread starvation ...

How to use the Authentication Plugin When using the open-source DataStax Java driver, the connection to your Amazon Keyspaces endpoint is represented by the CqlSession class. To create the CqlSession, ...

Null pointer exception is an “exception” (error) that is particularly common when programming in Java. For a beginner, this is a confusing and daunting message to receive, but it can be just ...

Java’s main function Java’s main function Java’s main method is composed of six terms — three reserved words, the main method name, a reference type and a variable name: public – Java’s main function ...

There are other ways you can categorize variables in Java, and other ways you can manipulate data. For instance, a constant is a variable whose value never changes.