Java modules Page

Java Modules



Return to java.lang.module, Java terms, Modular programming, Java 9 Platform Module System - Java Platform Module System (JPMS), Return to java.base, JDK 17 API Specification, Java Docs, Java, Java DevOps - Java SRE - Java CI/CD, Cloud Native Java - Java Microservices - Serverless Java, Java Security - Java DevSecOps, Functional Java, Java Concurrency, Java Data Science - Java and Databases, Java Machine Learning, Java Bibliography, Java Courses, Java Glossary, Awesome Java, Java GitHub, Java Topics


Overview



Java Modules, introduced in Java 9, are a fundamental feature that brings modularity to the Java platform. They provide a way to organize code into self-contained units with explicit dependencies, promoting better encapsulation, reliable configuration, and improved security.

Key Features



* **Modules**: A module is a collection of related packages, resources, and a `module-info.java` file that describes its dependencies and exported packages.
* **Strong Encapsulation**: Modules enforce strict access control, preventing access to internal implementation details unless explicitly exported.
* **Explicit Dependencies**: Modules declare their dependencies on other modules, ensuring that all required modules are present at compile-time and runtime.
* **Reliable Configuration**: The module system ensures that all required modules are available and compatible, preventing issues like "JAR hell."

Benefits



* **Improved Maintainability**: Modular code is easier to understand, modify, and test, as changes are isolated to specific modules.
* **Enhanced Security**: Strong encapsulation and explicit dependencies limit the attack surface of applications.
* **Scalability**: Modules enable efficient loading and linking of only the necessary code, potentially improving the performance and scalability of large applications.
* **Reduced Footprint**: Applications can be packaged with only the required modules, reducing their size and resource consumption.

Challenges



* **Adoption**: Migrating existing applications to a modular structure can require significant effort.
* **Learning Curve**: Understanding and effectively using modules can be challenging for developers unfamiliar with the concept.
* **Tooling Support**: While tooling support has improved, some build tools and IDEs may still have limitations in handling modular projects.

Additional Reading



* Oracle Documentation on Java Modules: [invalid URL removed]
* Baeldung: A Guide to Java 9 Modularity: [https://www.baeldung.com/java-modularity](https://www.baeldung.com/java-modularity)




Research More


Java Research:

=Java Best Websites

=
Java Best Websites:
* oreilly>Java module on O'Reilly
* ddg>Java module on DuckDuckGo
* java>Java module on docs.oracle.com
* heinz>Java module on JavaSpecialists.eu
* baeldung>Java module on baeldung.com

=Other JVM Languages and Frameworks

=
JVM Languages:
* kotlin>Java module on kotlinLang.org
* scala>Java module on scala-lang.org
* clojure>Java module on clojureDocs.org
* groovy>Java module on docs.groovy-lang.org

JVM Frameworks:
* android>Java module on developer.android.com
* xda>Java module on xda-developers.com
* spring>Java module on spring.io
* vertx>Java module on vertx.io
* quarkus>Java module on quarkus.io
* graalvm>Java module on graalvm.org

=Maven and Gradle

=
Maven, Maven Central and Gradle
* maven>Java module on search.maven.org
* mavenrepo>Java module on MvnRepository.com
* gradle>Java module on plugins.gradle.org

=Tutorials

=
Java Tutorials:
* javatpoint>Java module on javatpoint.com
* geeksforgeeks>Java module on geeksforgeeks.org
* tutorialspoint>Java module on tutorialspoint.com
* w3schools>Java module on w3schools.com
* freecode>Java module on FreeCodeCamp.org

=Java Security - Java Pentesting

=
Java Security - Java Pentesting
* exploit>Java module on exploit-db.com
* cve>Java module on cve.org Database of Common Vulnerabilities and Exposures (CVE)
* threatpost>Java module on threatpost.com
* talos>Java module on TalosIntelligence.com

=General Support

=
* redhat>Java module on developers.redhat.com
* ibm>Java module on IBM.com
* ms>Java module on docs.microsoft.com
* techtarget>Java module on whatis.techtarget.com
* youtube>Java module on YouTube
* github>Java module on GitHub
* reddit>Java module on Reddit
* scholar>Java module on scholar.google.com
* quora>Java module on Quora
* dzone>Java module on DZone
* hackernoon>Java module on Hacker Noon
* infoq>Java module on InfoQ.com
* twitter>Java module on Twitter
* stackoverflow>Java module on StackOverflow



Fair Use Sources


Fair Use Sources:
* ddg>Java module on DuckDuckGo

# B09WJP11JL (OCP17SelBoy 2022)
# B0756P3CZD (JPG4e 2017)
# B09JL8BMK7 (JavaCmpRef 2021)
# B09NS868Y2 (JavBegGd2022)
# B07L3BFG49 (JavNutSh 2018)
# B09782LG72 (ModJvAct 2018)
# B078H61SCH (EffJav 2017)
# B09MW3MW2Z (MoreJ17 2021)
# B09MP5N4MQ (J17Fund 2021)
# B09GXR6SPF (CorJav1 2019)
# B07NCXJR1M (CorJav2 2019)
# 1617298875 (WlGrnJvDv 2022)
# B0B2HPDDGF (Hd1stJav17 2022)
# B071S84XCK (Jav9frPg 2017)
# B09NLQY1NS (Jav17AbsBeg 2021)
# B08651PDL6 (JavCookBk 2020)
# B086L2NYWR (LrnJav] 2020)
# B004V9OA84 (JavCncrPrct 2006)

{{navbar_java_modules}}
navbar_java_modules

{{navbar_java}}


{{navbar_footer}}