Unleashing the Power of Java Modularization (Java 9+ Feature)

Introduction:

In the ever-evolving world of Java development, modularization has emerged as a game-changer. With the release of Java 9, developers were introduced to a powerful feature known as the Java Platform Module System (JPMS). This revolutionary addition enables better code organization, improved dependency management, and enhanced encapsulation. In this article, we will explore the world of Java modularization, diving into its concepts, benefits, and providing practical examples to showcase its true potential.

Understanding Java Modules:

In the traditional Java approach, applications were built using a collection of classes and packages. However, with modularization, the focus shifts towards building applications using modules, which are self-contained units of code that encapsulate related functionality.

To create a module, we use the module-info.java file, which serves as the module declaration. Let’s consider an analogy to better understand modules. Imagine a large library with numerous books scattered across the shelves. In this scenario, each book represents a class, and the shelves represent packages. However, with modularization, we organize the books into labeled sections (modules) that group related topics together, making it easier to locate and manage them.

// module-info.java
module com.myapp.order {
    requires com.myapp.inventory;
}