Java Basics Explained: Classes, Data Types, and Static Variables

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Java is a widely used object-oriented programming language that powers desktop, web, mobile, and enterprise applications. A Java class serves as a blueprint for objects and must follow specific naming rules, including starting with a letter and using PascalCase, while reserved keywords are not permitted as class names. Java variables are typed using either primitive data types — such as int, double, char, and boolean — or non-primitive reference types like strings, arrays, and interfaces. Static variables, declared with the static keyword, belong to the class itself rather than to individual objects, meaning only one shared copy exists in memory. Understanding these foundational concepts is considered essential for writing well-structured and efficient Java programs.

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