To define a package, you include a package declaration at the beginning of each Java source file. This declaration specifies the package name using the package keyword followed by the package name.

Newcomers to Java packages often become frustrated by “no class definition found” and other errors. This frustration can be partly avoided by understanding how the JVM looks for reference types.

In a previous blog posting , I listed some "everyday problems" Java developers will often face and included some ideas and links related to addressing these issues. One of the focal points of that ...

Java has no module system. Its packages only subdivide the class name space, allowing only a very limited form of component-level information hiding and reuse. Two Java Community Processes have ...