Advance Programming In Java | 13. Java Modules and the JPMS (Java Platform Module System) by Abraham | Learn Smarter
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13. Java Modules and the JPMS (Java Platform Module System)

Java Modules and the Java Platform Module System (JPMS) enhance modularity, encapsulation, and maintainability in Java applications. Introduced in Java 9, JPMS allows developers to organize code into well-defined modules with controlled dependencies, which helps mitigate issues like JAR conflicts and improves application performance and security. The chapter covers the structure of modules, the module-info.java descriptor, and various directives such as requires and exports, along with the benefits and limitations of the new system.

Sections

  • 13

    Java Modules And The Jpms (Java Platform Module System)

    This section introduces Java Modules and the Java Platform Module System (JPMS), highlighting their structure, benefits, and significance in modularizing Java applications.

    Learning Practice

  • 13.1

    What Is A Module In Java?

    A module in Java is a self-contained unit of code that organizes related packages and resources, defining its exports and dependencies.

    Learning Practice

  • 13.2

    Why Jpms Was Introduced

    JPMS was introduced in Java 9 to address code packaging issues and improve modularity.

    Learning Practice

  • 13.3

    Structure Of A Module

    This section discusses the structure of a module in Java, highlighting the importance of the module-info.java file.

    Learning Practice

  • 13.4

    Components Of Module System

    This section outlines the key components of the Java Platform Module System (JPMS), detailing the function and usage of module declarations and directives.

    Learning Practice

  • 13.5

    Types Of Modules

    This section discusses the different types of modules in the Java Platform Module System (JPMS), outlining their characteristics and distinctions.

    Learning Practice

  • 13.6

    Java Platform Modules

    The Java Platform Modules consist of standard modularized components that enhance Java's modularity and structure.

    Learning Practice

  • 13.7

    Creating And Using Modules – Example

    This section demonstrates how to create and utilize Java modules, detailing the folder structure and example module configurations.

    Learning Practice

  • 13.8

    Benefits Of Jpms

    The Java Platform Module System (JPMS) introduces significant benefits including reliable configuration, strong encapsulation, improved performance, enhanced security, and better maintainability.

    Learning Practice

  • 13.9

    Limitations And Challenges

    The limitations and challenges of JPMS primarily include the learning curve for legacy developers, compatibility issues, and the requirement for certain frameworks.

    Learning Practice

  • 13.10

    Jpms Vs Osgi

    This section compares the Java Platform Module System (JPMS) with OSGi, highlighting their respective runtime systems, complexity, adoption rates, and focuses.

    Learning Practice

  • 13.11

    Migration From Non-Modular To Modular Code

    This section outlines the steps to migrate Java code from a non-modular structure to a modular one using the Java Platform Module System (JPMS).

    Learning Practice

References

AJP ch13.pdf

Class Notes

Memorization

What we have learnt

  • Modules in Java are self-co...
  • JPMS introduces strong enca...
  • Creating modules involves d...

Final Test

Revision Tests