What is Project Jigsaw: Project Jigsaw is the project to make the java compiler module aware. For years java API has been monolithic, i.e. the whole API was seen from any part of the code equally. There has also not been any way to declare a code's dependency on any other user libraries. Project Jigsaw attempts to solve these problems along with others in a very eligant way. In this article, I will highlight the basic concepts of Jigsaw module systems and also explain how it would work with the commands so as to provide a real feel of it. Currently, Jigsaw is targetted to be included in the release of Java 8. In my opinion, this is a change bigger than generics that came with verion 5 of java platform.