Metric Results

[ summary ] [ packages ] [ cycles ] [ explanations ]

The following document contains the results of a JDepend metric analysis. The various metrics are defined at the bottom of this document.

Summary

[ summary ] [ packages ] [ cycles ] [ explanations ]

Package TC CC AC Ca Ce A I D V
net.java.truevfs.kernel.spec 55 32 23 1 14 42.0% 93.0% 35.0% 1
net.java.truevfs.kernel.spec.cio 8 7 1 0 6 12.0% 100.0% 12.0% 1
net.java.truevfs.kernel.spec.sl 7 6 1 1 6 14.0% 86.0% 0.0% 1
net.java.truevfs.kernel.spec.spi 7 1 6 1 3 86.0% 75.0% 61.0% 1

Packages

[ summary ] [ packages ] [ cycles ] [ explanations ]

net.java.truevfs.kernel.spec

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 14 42.0% 93.0% 35.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
net.java.truevfs.kernel.spec.FsAbstractCompositeDriver
net.java.truevfs.kernel.spec.FsAbstractController
net.java.truevfs.kernel.spec.FsAbstractManager
net.java.truevfs.kernel.spec.FsAbstractModel
net.java.truevfs.kernel.spec.FsAbstractNode
net.java.truevfs.kernel.spec.FsAccessOptionsController
net.java.truevfs.kernel.spec.FsArchiveDriver
net.java.truevfs.kernel.spec.FsArchiveEntry
net.java.truevfs.kernel.spec.FsAssertion
net.java.truevfs.kernel.spec.FsCompositeDriver
net.java.truevfs.kernel.spec.FsController
net.java.truevfs.kernel.spec.FsController$Factory
net.java.truevfs.kernel.spec.FsDecoratingController
net.java.truevfs.kernel.spec.FsDecoratingManager
net.java.truevfs.kernel.spec.FsDecoratingModel
net.java.truevfs.kernel.spec.FsDriver
net.java.truevfs.kernel.spec.FsManager
net.java.truevfs.kernel.spec.FsModel
net.java.truevfs.kernel.spec.FsModel$Factory
net.java.truevfs.kernel.spec.FsNode
net.java.truevfs.kernel.spec.FsUriModifier
net.java.truevfs.kernel.spec.FsUriModifier$PostFix
net.java.truevfs.kernel.spec.package-info
 net.java.truevfs.kernel.spec.FsAccessOption
net.java.truevfs.kernel.spec.FsAccessOptions
net.java.truevfs.kernel.spec.FsArchiveEntries
net.java.truevfs.kernel.spec.FsAssertion$Level
net.java.truevfs.kernel.spec.FsControllerComparator
net.java.truevfs.kernel.spec.FsControllerFilter
net.java.truevfs.kernel.spec.FsCovariantNode
net.java.truevfs.kernel.spec.FsInputSocketSource
net.java.truevfs.kernel.spec.FsModelFilter
net.java.truevfs.kernel.spec.FsMountPoint
net.java.truevfs.kernel.spec.FsNodeName
net.java.truevfs.kernel.spec.FsNodePath
net.java.truevfs.kernel.spec.FsOpenResourceException
net.java.truevfs.kernel.spec.FsOutputSocketSink
net.java.truevfs.kernel.spec.FsPrefixMountPointFilter
net.java.truevfs.kernel.spec.FsReadOnlyFileSystemException
net.java.truevfs.kernel.spec.FsScheme
net.java.truevfs.kernel.spec.FsSimpleCompositeDriver
net.java.truevfs.kernel.spec.FsSync
net.java.truevfs.kernel.spec.FsSync$1
net.java.truevfs.kernel.spec.FsSync$1SyncVisitor
net.java.truevfs.kernel.spec.FsSyncException
net.java.truevfs.kernel.spec.FsSyncExceptionBuilder
net.java.truevfs.kernel.spec.FsSyncExceptionBuilder$FsSyncExceptionComparator
net.java.truevfs.kernel.spec.FsSyncOption
net.java.truevfs.kernel.spec.FsSyncOptions
net.java.truevfs.kernel.spec.FsSyncWarningException
net.java.truevfs.kernel.spec.FsUriModifier$1
net.java.truevfs.kernel.spec.FsUriModifier$2
net.java.truevfs.kernel.spec.FsUriModifier$PostFix$1
net.java.truevfs.kernel.spec.FsUriModifier$PostFix$2
net.java.truevfs.kernel.spec.FsUriModifier$PostFix$3
 net.java.truevfs.kernel.spec.sl
 java.io
java.lang
java.lang.annotation
java.net
java.nio.channels
java.nio.charset
java.nio.file
java.util
javax.inject
net.java.truecommons.cio
net.java.truecommons.io
net.java.truecommons.services
net.java.truecommons.shed
net.java.truevfs.kernel.spec.sl

net.java.truevfs.kernel.spec.cio

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 6 12.0% 100.0% 12.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
net.java.truevfs.kernel.spec.cio.package-info
 net.java.truevfs.kernel.spec.cio.MultiplexingOutputService
net.java.truevfs.kernel.spec.cio.MultiplexingOutputService$1
net.java.truevfs.kernel.spec.cio.MultiplexingOutputService$1Output
net.java.truevfs.kernel.spec.cio.MultiplexingOutputService$BufferedEntriesIterator
net.java.truevfs.kernel.spec.cio.MultiplexingOutputService$BufferedEntryOutputStream
net.java.truevfs.kernel.spec.cio.MultiplexingOutputService$BufferedEntryOutputStream$1InputProxy
net.java.truevfs.kernel.spec.cio.MultiplexingOutputService$EntryOutputStream
 None java.io
java.lang
java.util
net.java.truecommons.cio
net.java.truecommons.io
net.java.truecommons.shed

net.java.truevfs.kernel.spec.sl

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 6 14.0% 86.0% 0.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
net.java.truevfs.kernel.spec.sl.package-info
 net.java.truevfs.kernel.spec.sl.FsDriverMapLocator
net.java.truevfs.kernel.spec.sl.FsDriverMapLocator$Lazy
net.java.truevfs.kernel.spec.sl.FsManagerLocator
net.java.truevfs.kernel.spec.sl.FsManagerLocator$Lazy
net.java.truevfs.kernel.spec.sl.IoBufferPoolLocator
net.java.truevfs.kernel.spec.sl.IoBufferPoolLocator$Lazy
 net.java.truevfs.kernel.spec
 java.lang
java.util
net.java.truecommons.cio
net.java.truecommons.services
net.java.truevfs.kernel.spec
net.java.truevfs.kernel.spec.spi

net.java.truevfs.kernel.spec.spi

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 3 86.0% 75.0% 61.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
net.java.truevfs.kernel.spec.spi.FsDriverMapModifier
net.java.truevfs.kernel.spec.spi.FsManagerDecorator
net.java.truevfs.kernel.spec.spi.FsManagerFactory
net.java.truevfs.kernel.spec.spi.IoBufferPoolDecorator
net.java.truevfs.kernel.spec.spi.IoBufferPoolFactory
net.java.truevfs.kernel.spec.spi.package-info
 net.java.truevfs.kernel.spec.spi.FsDriverMapFactory
 net.java.truevfs.kernel.spec.sl
 java.lang
java.util
net.java.truecommons.services

Cycles

[ summary ] [ packages ] [ cycles ] [ explanations ]

Package Package Dependencies
net.java.truevfs.kernel.spec net.java.truevfs.kernel.spec.sl
net.java.truevfs.kernel.spec
net.java.truevfs.kernel.spec.sl net.java.truevfs.kernel.spec
net.java.truevfs.kernel.spec.sl

Explanation

[ summary ] [ packages ] [ cycles ] [ explanations ]

The following explanations are for quick reference and are lifted directly from the original JDepend documentation.

Term Description
Number of Classes The number of concrete and abstract classes (and interfaces) in the package is an indicator of the extensibility of the package.
Afferent Couplings The number of other packages that depend upon classes within the package is an indicator of the package's responsibility.
Efferent Couplings The number of other packages that the classes in the package depend upon is an indicator of the package's independence.
Abstractness The ratio of the number of abstract classes (and interfaces) in the analyzed package to the total number of classes in the analyzed package. The range for this metric is 0 to 1, with A=0 indicating a completely concrete package and A=1 indicating a completely abstract package.
Instability The ratio of efferent coupling (Ce) to total coupling (Ce / (Ce + Ca)). This metric is an indicator of the package's resilience to change. The range for this metric is 0 to 1, with I=0 indicating a completely stable package and I=1 indicating a completely instable package.
Distance The perpendicular distance of a package from the idealized line A + I = 1. This metric is an indicator of the package's balance between abstractness and stability. A package squarely on the main sequence is optimally balanced with respect to its abstractness and stability. Ideal packages are either completely abstract and stable (x=0, y=1) or completely concrete and instable (x=1, y=0). The range for this metric is 0 to 1, with D=0 indicating a package that is coincident with the main sequence and D=1 indicating a package that is as far from the main sequence as possible.
Cycles Packages participating in a package dependency cycle are in a deadly embrace with respect to reusability and their release cycle. Package dependency cycles can be easily identified by reviewing the textual reports of dependency cycles. Once these dependency cycles have been identified with JDepend, they can be broken by employing various object-oriented techniques.