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
org.apache.commons.compress.archivers 5 2 3 7 7 60.000004% 50.0% 10.0% 1
org.apache.commons.compress.archivers.ar 3 3 0 1 4 0.0% 80.0% 20.0% 1
org.apache.commons.compress.archivers.cpio 5 4 1 1 5 20.0% 83.0% 3.0% 1
org.apache.commons.compress.archivers.jar 3 3 0 1 7 0.0% 88.0% 12.0% 1
org.apache.commons.compress.archivers.tar 6 5 1 1 5 17.0% 83.0% 0.0% 1
org.apache.commons.compress.archivers.zip 28 22 6 2 7 21.0% 78.0% 1.0% 1
org.apache.commons.compress.changes 4 4 0 0 5 0.0% 100.0% 0.0% 1
org.apache.commons.compress.compressors 4 2 2 2 4 50.0% 67.0% 17.0% 1
org.apache.commons.compress.compressors.bzip2 7 6 1 1 3 14.0% 75.0% 11.0% 1
org.apache.commons.compress.compressors.gzip 3 3 0 1 5 0.0% 83.0% 17.0% 1
org.apache.commons.compress.utils 2 2 0 4 3 0.0% 43.0% 57.0% 1

Packages

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

org.apache.commons.compress.archivers

Afferent Couplings Efferent Couplings Abstractness Instability Distance
7 7 60.000004% 50.0% 10.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.compress.archivers.ArchiveEntry
org.apache.commons.compress.archivers.ArchiveInputStream
org.apache.commons.compress.archivers.ArchiveOutputStream
 org.apache.commons.compress.archivers.ArchiveException
org.apache.commons.compress.archivers.ArchiveStreamFactory
 org.apache.commons.compress.archivers.ar
org.apache.commons.compress.archivers.cpio
org.apache.commons.compress.archivers.jar
org.apache.commons.compress.archivers.tar
org.apache.commons.compress.archivers.zip
org.apache.commons.compress.changes
org.apache.commons.compress.utils
 java.io
java.lang
org.apache.commons.compress.archivers.ar
org.apache.commons.compress.archivers.cpio
org.apache.commons.compress.archivers.jar
org.apache.commons.compress.archivers.tar
org.apache.commons.compress.archivers.zip

org.apache.commons.compress.archivers.ar

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 4 0.0% 80.0% 20.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.commons.compress.archivers.ar.ArArchiveEntry
org.apache.commons.compress.archivers.ar.ArArchiveInputStream
org.apache.commons.compress.archivers.ar.ArArchiveOutputStream
 org.apache.commons.compress.archivers
 java.io
java.lang
org.apache.commons.compress.archivers
org.apache.commons.compress.utils

org.apache.commons.compress.archivers.cpio

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 5 20.0% 83.0% 3.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.compress.archivers.cpio.CpioConstants
 org.apache.commons.compress.archivers.cpio.CpioArchiveEntry
org.apache.commons.compress.archivers.cpio.CpioArchiveInputStream
org.apache.commons.compress.archivers.cpio.CpioArchiveOutputStream
org.apache.commons.compress.archivers.cpio.CpioUtil
 org.apache.commons.compress.archivers
 java.io
java.lang
java.util
org.apache.commons.compress.archivers
org.apache.commons.compress.utils

org.apache.commons.compress.archivers.jar

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 7 0.0% 88.0% 12.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.commons.compress.archivers.jar.JarArchiveEntry
org.apache.commons.compress.archivers.jar.JarArchiveInputStream
org.apache.commons.compress.archivers.jar.JarArchiveOutputStream
 org.apache.commons.compress.archivers
 java.io
java.lang
java.security.cert
java.util.jar
java.util.zip
org.apache.commons.compress.archivers
org.apache.commons.compress.archivers.zip

org.apache.commons.compress.archivers.tar

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 5 17.0% 83.0% 0.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.compress.archivers.tar.TarConstants
 org.apache.commons.compress.archivers.tar.TarArchiveEntry
org.apache.commons.compress.archivers.tar.TarArchiveInputStream
org.apache.commons.compress.archivers.tar.TarArchiveOutputStream
org.apache.commons.compress.archivers.tar.TarBuffer
org.apache.commons.compress.archivers.tar.TarUtils
 org.apache.commons.compress.archivers
 java.io
java.lang
java.util
org.apache.commons.compress.archivers
org.apache.commons.compress.utils

org.apache.commons.compress.archivers.zip

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 7 21.0% 78.0% 1.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.compress.archivers.zip.AbstractUnicodeExtraField
org.apache.commons.compress.archivers.zip.UnixStat
org.apache.commons.compress.archivers.zip.ZipEncoding
org.apache.commons.compress.archivers.zip.ZipEncodingHelper
org.apache.commons.compress.archivers.zip.ZipExtraField
org.apache.commons.compress.archivers.zip.ZipUtil
 org.apache.commons.compress.archivers.zip.AsiExtraField
org.apache.commons.compress.archivers.zip.ExtraFieldUtils
org.apache.commons.compress.archivers.zip.FallbackZipEncoding
org.apache.commons.compress.archivers.zip.JarMarker
org.apache.commons.compress.archivers.zip.NioZipEncoding
org.apache.commons.compress.archivers.zip.Simple8BitZipEncoding
org.apache.commons.compress.archivers.zip.Simple8BitZipEncoding$Simple8BitChar
org.apache.commons.compress.archivers.zip.UnicodeCommentExtraField
org.apache.commons.compress.archivers.zip.UnicodePathExtraField
org.apache.commons.compress.archivers.zip.UnrecognizedExtraField
org.apache.commons.compress.archivers.zip.ZipArchiveEntry
org.apache.commons.compress.archivers.zip.ZipArchiveInputStream
org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream
org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream$UnicodeExtraFieldPolicy
org.apache.commons.compress.archivers.zip.ZipEncodingHelper$SimpleEncodingHolder
org.apache.commons.compress.archivers.zip.ZipFile
org.apache.commons.compress.archivers.zip.ZipFile$1
org.apache.commons.compress.archivers.zip.ZipFile$BoundedInputStream
org.apache.commons.compress.archivers.zip.ZipFile$NameAndComment
org.apache.commons.compress.archivers.zip.ZipFile$OffsetEntry
org.apache.commons.compress.archivers.zip.ZipLong
org.apache.commons.compress.archivers.zip.ZipShort
 org.apache.commons.compress.archivers
org.apache.commons.compress.archivers.jar
 java.io
java.lang
java.nio
java.nio.charset
java.util
java.util.zip
org.apache.commons.compress.archivers

org.apache.commons.compress.changes

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 5 0.0% 100.0% 0.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.commons.compress.changes.Change
org.apache.commons.compress.changes.ChangeSet
org.apache.commons.compress.changes.ChangeSetPerformer
org.apache.commons.compress.changes.ChangeSetResults
 None java.io
java.lang
java.util
org.apache.commons.compress.archivers
org.apache.commons.compress.utils

org.apache.commons.compress.compressors

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 4 50.0% 67.0% 17.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.compress.compressors.CompressorInputStream
org.apache.commons.compress.compressors.CompressorOutputStream
 org.apache.commons.compress.compressors.CompressorException
org.apache.commons.compress.compressors.CompressorStreamFactory
 org.apache.commons.compress.compressors.bzip2
org.apache.commons.compress.compressors.gzip
 java.io
java.lang
org.apache.commons.compress.compressors.bzip2
org.apache.commons.compress.compressors.gzip

org.apache.commons.compress.compressors.bzip2

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 3 14.0% 75.0% 11.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.compress.compressors.bzip2.BZip2Constants
 org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream
org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream$Data
org.apache.commons.compress.compressors.bzip2.BZip2CompressorOutputStream
org.apache.commons.compress.compressors.bzip2.BZip2CompressorOutputStream$Data
org.apache.commons.compress.compressors.bzip2.CRC
org.apache.commons.compress.compressors.bzip2.Rand
 org.apache.commons.compress.compressors
 java.io
java.lang
org.apache.commons.compress.compressors

org.apache.commons.compress.compressors.gzip

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 5 0.0% 83.0% 17.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream
org.apache.commons.compress.compressors.gzip.GzipCompressorOutputStream
org.apache.commons.compress.compressors.gzip.GzipUtils
 org.apache.commons.compress.compressors
 java.io
java.lang
java.util
java.util.zip
org.apache.commons.compress.compressors

org.apache.commons.compress.utils

Afferent Couplings Efferent Couplings Abstractness Instability Distance
4 3 0.0% 43.0% 57.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.commons.compress.utils.ArchiveUtils
org.apache.commons.compress.utils.IOUtils
 org.apache.commons.compress.archivers.ar
org.apache.commons.compress.archivers.cpio
org.apache.commons.compress.archivers.tar
org.apache.commons.compress.changes
 java.io
java.lang
org.apache.commons.compress.archivers

Cycles

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

Package Package Dependencies
org.apache.commons.compress.archivers org.apache.commons.compress.archivers.ar
org.apache.commons.compress.archivers
org.apache.commons.compress.archivers.ar org.apache.commons.compress.archivers
org.apache.commons.compress.archivers.ar
org.apache.commons.compress.archivers.cpio org.apache.commons.compress.archivers
org.apache.commons.compress.archivers.ar
org.apache.commons.compress.archivers
org.apache.commons.compress.archivers.jar org.apache.commons.compress.archivers
org.apache.commons.compress.archivers.ar
org.apache.commons.compress.archivers
org.apache.commons.compress.archivers.tar org.apache.commons.compress.archivers
org.apache.commons.compress.archivers.ar
org.apache.commons.compress.archivers
org.apache.commons.compress.archivers.zip org.apache.commons.compress.archivers
org.apache.commons.compress.archivers.ar
org.apache.commons.compress.archivers
org.apache.commons.compress.changes org.apache.commons.compress.archivers
org.apache.commons.compress.archivers.ar
org.apache.commons.compress.archivers
org.apache.commons.compress.compressors org.apache.commons.compress.compressors.gzip
org.apache.commons.compress.compressors
org.apache.commons.compress.compressors.bzip2 org.apache.commons.compress.compressors
org.apache.commons.compress.compressors.gzip
org.apache.commons.compress.compressors
org.apache.commons.compress.compressors.gzip org.apache.commons.compress.compressors
org.apache.commons.compress.compressors.gzip
org.apache.commons.compress.utils org.apache.commons.compress.archivers
org.apache.commons.compress.archivers.ar
org.apache.commons.compress.archivers

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.