Java Reference
In-Depth Information
instantiated.Finally,
Math
and
StrictMath
areexamplesofutilityclassesbecause
they exist as placeholders for
static
methods.
Package
The
java.lang.Package
classprovidesaccesstoinformationaboutapackage(see
Chapter 3
for an introduction to packages). This information includes version details
abouttheimplementationandspecificationofaJavapackage,thenameofthepackage,
andanindicationofwhetherornotthepackagehasbeen
sealed
(allclassesthatarepart
of a package are archived in the same JAR file).