7.4.1 Named Packages

A package declaration in a compilation unit specifies the name (§6.2) of the package to which the compilation unit belongs.

PackageDeclaration:

	package PackageName ;

The package name mentioned in a package declaration must be the fully qualified name (§6.7) of the package.

If a type named T is declared in a compilation unit of a package whose fully qualified name is P, then the fully qualified name of the type is P.T; thus in the example:

package wnj.points;
class Point { int x, y; }

the fully qualified name of class Point is wnj.points.Point.