In this chapter we’ll start to develop modular applications in Java 9 using some of the features offered by Project Jigsaw. We’ll begin by explaining the new concept of a Jigsaw module together with its module declaration, the module-info.java file. You’ll also learn about the five types of directives that can be used inside the module declaration: requires, exports, uses, provides, and opens. Then we’ll look at compiling and running modules using JDK 9, and for that we’ll introduce the new module path in detail.
The accessibility changes introduced in Java 9 are also covered ...
