Untangling the Knot: Solving the Coupling Problem in Java

Introduction:
In the realm of software development, one concept that often arises is coupling. Coupling refers to the level of interdependence between different components or modules of a system. When coupling is high, it indicates that changes in one module may have a significant impact on other modules, leading to a fragile and difficult-to-maintain codebase. In this article, we will delve into the world of coupling, understand its implications, and explore strategies to reduce coupling in Java applications.

Understanding Coupling:
Imagine a bowl of spaghetti, where the strands represent the relationships between different modules in your codebase. When one strand moves, it causes a ripple effect throughout the entire bowl. This interconnectedness is similar to coupling in software development. High coupling can make your codebase less flexible, harder to test, and more prone to bugs.

Types of Coupling:

Content Coupling:
Content coupling occurs when one module directly accesses or modifies the internal details of another module. It is considered the most tightly coupled form of dependency. For example, if Module A directly modifies the internal state of Module B, any changes made to Module B can break Module A.

Code Example:

// Module A
public class ModuleA {
    private ModuleB moduleB;

    public void doSomething() {
        //…