Java modules haven't been adopted because people are still getting off of JDK 8 as it becomes deprecated. It will only make sense for library and framework mai

Java modules haven't been adopted because people are still getting off of JDK 8 as it becomes deprecated. It will only make sense for library and framework maintainers to invest in modules once there is a large user base on JDK 11. Either way, modules are still useful for application development. I used them years ago to close off internal APIs in one of my applications, which helped me to not cross levels of abstraction accidentally.