What are the advantages and disadvantages of the module system in Java 9?

One of the big changes in the Java 9 version is the module system, which provides modularity for running on devices with less available memory JVM. The JVM only runs the modules and APIs required by the application.

<strong>module Module-Name {
   requires moduleName;
   exports packageName;
}</strong>

Here are some pros and cons of the module system.

Advantages of modules:

• The main change in Java 9 is that it is now a modular JDK with , Modular source code and Modular Runtime Image's module system.
The internal API is hidden within a module.
• The module system creates more opportunities for the development of projects that can handle
• distributed data processing. For example, the new Java 9 has been used to build IoT solutions and Platform, where various data need to be processed simultaneously.
Modules in Java can now also set
• methods to public inside the module and restrict access to ordinary users.

Disadvantages of the module:

After the release of Java 9, previous Java versions will no longer be supported, and customers may need to spend time and resources migrating.
• If a project is still in development, migration may not be too difficult. But for other solutions, migration can be a serious problem.
• Interdependencies between program products and libraries have not yet been resolved, making it potentially difficult to install new products and uninstall old ones.

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