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 Total

Classes
Abstract

Classes
Concrete

Classes
Afferent

Couplings
Efferent

Couplings
Abstractness Instability Distance
org.quilt 1 0 1 0 1 0 100% 0%
org.quilt.bytecode 1 0 1 0 2 0 100% 0%
org.quilt.cl 19 4 15 5 9 0.21 64% 15%
org.quilt.cover 1 1 0 0 1 1 100% 100%
org.quilt.cover.seg 1 0 1 0 1 0 100% 0%
org.quilt.cover.stmt 9 1 8 2 10 0.11 83% 6%
org.quilt.exception 1 0 1 0 1 0 100% 0%
org.quilt.framework 1 0 1 4 5 0 56% 44%
org.quilt.frontend.ant 10 0 10 0 14 0 100% 0%
org.quilt.graph 13 2 11 2 3 0.15 60% 25%
org.quilt.reg 4 1 3 2 3 0.25 60% 15%
org.quilt.reports 7 2 5 4 11 0.29 73% 2%
org.quilt.runner 7 2 5 3 10 0.29 77% 5%
org.quilt.textui 3 1 2 0 9 0.33 100% 33%

Packages

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

org.quilt

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 1 0% 100% 0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
QIC

java.lang

org.quilt.bytecode

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 2 0% 100% 0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
LabeledNOP

java.lang

org.apache.bcel.generic

org.quilt.cover

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 1 100% 100% 100%
Abstract Classes Concrete Classes Used by Packages Uses Packages
CoverageTypes

java.lang

org.quilt.cover.seg

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 1 0% 100% 0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
Segment

java.lang

org.quilt.exception

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 1 0% 100% 0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
QuiltException

java.lang

org.quilt.framework

Afferent Couplings Efferent Couplings Abstractness Instability Distance
4 5 0% 56% 44%
Abstract Classes Concrete Classes Used by Packages Uses Packages
QuiltTest

org.quilt.frontend.ant

org.quilt.reports

org.quilt.runner

org.quilt.textui

java.io

java.lang

java.util

org.apache.tools.ant

org.quilt.reports

org.quilt.reg

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 3 25% 60% 15%
Abstract Classes Concrete Classes Used by Packages Uses Packages
QuiltRegistry

Registry

Registry$1

Registry$CmpArrays

org.quilt.cl

org.quilt.cover.stmt

java.lang

java.util

org.quilt.cl

org.quilt.textui

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 9 33% 100% 33%
Abstract Classes Concrete Classes Used by Packages Uses Packages
Textui

MockTestRunner

TestRunner

java.io

java.lang

java.util

org.apache.tools.ant

org.quilt.cl

org.quilt.cover.stmt

org.quilt.framework

org.quilt.reports

org.quilt.runner

Cycles

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

Package Cyclic Dependencies
org.quilt.cl org.quilt.reg

org.quilt.cl

org.quilt.cover.stmt org.quilt.cl

org.quilt.reg

org.quilt.cl

org.quilt.framework org.quilt.reports

org.quilt.framework

org.quilt.frontend.ant org.quilt.framework

org.quilt.reports

org.quilt.framework

org.quilt.reg org.quilt.cl

org.quilt.reg

org.quilt.reports org.quilt.framework

org.quilt.reports

org.quilt.runner org.quilt.framework

org.quilt.reports

org.quilt.framework

org.quilt.textui org.quilt.framework

org.quilt.reports

org.quilt.framework

Explanations

[ 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.