Modular Programming in Java is a way to structure your code into independent, reusable modules to improve maintainability, scalability, and readability. It became a first-class concept in Java 9 with the introduction of the Java Platform Module System (JPMS).
In Java, a module is a self-contained group of packages, classes, and resources. It declares:
What it exports (makes available to other modules).
What it requires (dependencies on other modules).
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This file is the heart of a Java module.
Example:
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8179191999
module com.example.myapp {
requires java.sql;
requires com.example.utils;
exports com.example.myapp.api;
}
requires = imports another module.
exports = makes packages visible to other modules.
Only exported packages are accessible outside the module. The rest is hidden, helping reduce tight coupling.
Improved maintainability: Easier to understand and test smaller parts.
Better encapsulation: Internal APIs stay hidden.
Faster startup: JVM can optimize module loading.
Reliable dependencies: Catches missing modules at compile-time.
Example Structure
myapp/
├── module-info.java
├── com/
│ └── example/
│ └── myapp/
│ └── Main.java
Build Tools: Maven and Gradle now support modules.
IDEs: IntelliJ IDEA and Eclipse support module-aware projects.
Not backward compatible with Java 8 and earlier.
Requires planning your package structure and visibility carefully.
Can be overkill for small projects.
Use it if:
You're working on large or enterprise-scale applications.
You want strong encapsulation and dependency management.
You're targeting Java 9+ and want better tooling and performance.
Scope and Facility @ Naresh I Technology:
At Naresh IT you will get a good Experienced faculty who will guide you, mentor you and nurture you to achieve your dream goal.
Here you will get a good hand on practice in terms of practical industry-oriented environment which will definitely help you a lot to shape your future.
During the designing process of application, we will let you know about the other aspect of the application too.
Our Expert trainer will let you know about every in’s and out’s about the problem scenario.
Achieving your dream goal is our motto. Our excellent team is working restlessly for our students to click their target. So, believe on us and our advice, and we assured you about your sure success.
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