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 ]

PackageTCCCACCaCeAIDV
org.apache.commons.io17161386.0%73.0%21.0%1
org.apache.commons.io.filefilter232031413.0%80.0%7.0%1
org.apache.commons.io.input8620325.0%100.0%25.0%1
org.apache.commons.io.output11101149.0%80.0%11.0%1

Packages

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

org.apache.commons.io

Afferent CouplingsEfferent CouplingsAbstractnessInstabilityDistance
386.0%73.0%21.0%
Abstract ClassesConcrete ClassesUsed by PackagesUses Packages
org.apache.commons.io.DirectoryWalker
org.apache.commons.io.CopyUtils
org.apache.commons.io.DirectoryWalker$CancelException
org.apache.commons.io.EndianUtils
org.apache.commons.io.FileCleaner
org.apache.commons.io.FileCleaningTracker
org.apache.commons.io.FileCleaningTracker$Reaper
org.apache.commons.io.FileCleaningTracker$Tracker
org.apache.commons.io.FileDeleteStrategy
org.apache.commons.io.FileDeleteStrategy$ForceFileDeleteStrategy
org.apache.commons.io.FileSystemUtils
org.apache.commons.io.FileUtils
org.apache.commons.io.FilenameUtils
org.apache.commons.io.HexDump
org.apache.commons.io.IOCase
org.apache.commons.io.IOUtils
org.apache.commons.io.LineIterator
org.apache.commons.io.filefilter
org.apache.commons.io.input
org.apache.commons.io.output
java.io
java.lang
java.lang.ref
java.net
java.util
java.util.zip
org.apache.commons.io.filefilter
org.apache.commons.io.output

org.apache.commons.io.filefilter

Afferent CouplingsEfferent CouplingsAbstractnessInstabilityDistance
1413.0%80.0%7.0%
Abstract ClassesConcrete ClassesUsed by PackagesUses Packages
org.apache.commons.io.filefilter.AbstractFileFilter
org.apache.commons.io.filefilter.ConditionalFileFilter
org.apache.commons.io.filefilter.IOFileFilter
org.apache.commons.io.filefilter.AgeFileFilter
org.apache.commons.io.filefilter.AndFileFilter
org.apache.commons.io.filefilter.CanReadFileFilter
org.apache.commons.io.filefilter.CanWriteFileFilter
org.apache.commons.io.filefilter.DelegateFileFilter
org.apache.commons.io.filefilter.DirectoryFileFilter
org.apache.commons.io.filefilter.EmptyFileFilter
org.apache.commons.io.filefilter.FalseFileFilter
org.apache.commons.io.filefilter.FileFileFilter
org.apache.commons.io.filefilter.FileFilterUtils
org.apache.commons.io.filefilter.HiddenFileFilter
org.apache.commons.io.filefilter.NameFileFilter
org.apache.commons.io.filefilter.NotFileFilter
org.apache.commons.io.filefilter.OrFileFilter
org.apache.commons.io.filefilter.PrefixFileFilter
org.apache.commons.io.filefilter.SizeFileFilter
org.apache.commons.io.filefilter.SuffixFileFilter
org.apache.commons.io.filefilter.TrueFileFilter
org.apache.commons.io.filefilter.WildcardFileFilter
org.apache.commons.io.filefilter.WildcardFilter
org.apache.commons.io
java.io
java.lang
java.util
org.apache.commons.io

org.apache.commons.io.input

Afferent CouplingsEfferent CouplingsAbstractnessInstabilityDistance
0325.0%100.0%25.0%
Abstract ClassesConcrete ClassesUsed by PackagesUses Packages
org.apache.commons.io.input.ProxyInputStream
org.apache.commons.io.input.ProxyReader
org.apache.commons.io.input.ClassLoaderObjectInputStream
org.apache.commons.io.input.CountingInputStream
org.apache.commons.io.input.DemuxInputStream
org.apache.commons.io.input.NullInputStream
org.apache.commons.io.input.NullReader
org.apache.commons.io.input.SwappedDataInputStream
Nonejava.io
java.lang
org.apache.commons.io

org.apache.commons.io.output

Afferent CouplingsEfferent CouplingsAbstractnessInstabilityDistance
149.0%80.0%11.0%
Abstract ClassesConcrete ClassesUsed by PackagesUses Packages
org.apache.commons.io.output.ThresholdingOutputStream
org.apache.commons.io.output.ByteArrayOutputStream
org.apache.commons.io.output.CountingOutputStream
org.apache.commons.io.output.DeferredFileOutputStream
org.apache.commons.io.output.DemuxOutputStream
org.apache.commons.io.output.LockableFileWriter
org.apache.commons.io.output.NullOutputStream
org.apache.commons.io.output.NullWriter
org.apache.commons.io.output.ProxyOutputStream
org.apache.commons.io.output.ProxyWriter
org.apache.commons.io.output.TeeOutputStream
org.apache.commons.io
java.io
java.lang
java.util
org.apache.commons.io

Cycles

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

PackagePackage Dependencies
org.apache.commons.ioorg.apache.commons.io.filefilter
org.apache.commons.io
org.apache.commons.io.filefilterorg.apache.commons.io
org.apache.commons.io.filefilter
org.apache.commons.io.inputorg.apache.commons.io
org.apache.commons.io.filefilter
org.apache.commons.io
org.apache.commons.io.outputorg.apache.commons.io
org.apache.commons.io.filefilter
org.apache.commons.io

Explanation

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

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

TermDescription
Number of ClassesThe number of concrete and abstract classes (and interfaces) in the package is an indicator of the extensibility of the package.
Afferent CouplingsThe number of other packages that depend upon classes within the package is an indicator of the package's responsibility.
Efferent CouplingsThe number of other packages that the classes in the package depend upon is an indicator of the package's independence.
AbstractnessThe 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.
InstabilityThe 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.
DistanceThe 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.
CyclesPackages 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.