There is a remote Maven central repository to unify the various projects and the corresponding version.
The remote library jar package to download to the local library, and by configuring in pom.xml, to automatically import the other items.
Building: the "Java Source File," "Framework configuration files" "JSP" "HTML" "picture" for raw materials and other resources, go to the "production" of a process to run the project.
Without Maven
project is a project, if the project is very large, is not suitable for dividing module package. Preferably each module corresponds to a project, to facilitate the division of labor.
Projects need to copy and paste into the jar package under the WEB-INF / lib directory (the same jar package appear in different projects, waste of space, engineering bloated)
obtain needed self-discovery from the site a jar. (Non-standard resources)
for each packet may also be dependent on other jar jar package (repeated introduction)