Modular Programming in Java 9

Reusability

One of the tenets of modularity is reusability. We earlier used the analogy of building blocks to describe modules. The idea of plugging in reusable modules together to create different applications is very powerful indeed! In order to make modules reusable, they should ideally have the following characteristics:

• They should have some specialized and limited responsibility. A module that does too many things is hard to reuse effectively.
• They should be independent--If a module depends on a whole lot of other modules to function, it becomes harder to reuse the module itself.
• It should be configurable--If the module is tweak-able and can be made to work for different use cases, it makes the module more amenable to reuse.

These ...