MyFaces Shared Impl - JDepend Report Metrics

Apache MyFaces

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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.myfaces.shared_impl.component	4	0	4	1	3	100.0%	75.0%	75.0%	1
org.apache.myfaces.shared_impl.config	1	1	0	3	6	0.0%	67.0%	33.0%	1
org.apache.myfaces.shared_impl.context	1	0	1	0	4	100.0%	100.0%	100.0%	1
org.apache.myfaces.shared_impl.el	1	1	0	1	4	0.0%	80.0%	20.0%	1
org.apache.myfaces.shared_impl.renderkit	5	4	1	3	18	20.0%	86.0%	6.0%	1
org.apache.myfaces.shared_impl.renderkit.html	24	19	5	0	19	21.0%	100.0%	21.0%	1
org.apache.myfaces.shared_impl.renderkit.html.util	4	2	2	3	8	50.0%	73.0%	23.0%	1
org.apache.myfaces.shared_impl.taglib	6	2	4	2	15	67.0%	88.0%	55.0%	1
org.apache.myfaces.shared_impl.taglib.core	2	2	0	0	12	0.0%	100.0%	0.0%	1
org.apache.myfaces.shared_impl.taglib.html	50	0	50	0	5	100.0%	100.0%	100.0%	1
org.apache.myfaces.shared_impl.test	1	1	0	0	4	0.0%	100.0%	0.0%	1
org.apache.myfaces.shared_impl.trace	6	5	1	0	3	17.0%	100.0%	17.0%	1
org.apache.myfaces.shared_impl.util	20	18	2	6	22	10.0%	79.0%	11.0%	1
org.apache.myfaces.shared_impl.util.el	5	1	4	0	2	80.0%	100.0%	80.0%	1
org.apache.myfaces.shared_impl.util.serial	2	1	1	1	3	50.0%	75.0%	25.0%	1
org.apache.myfaces.shared_impl.util.servlet	1	1	0	0	4	0.0%	100.0%	0.0%	1
org.apache.myfaces.shared_impl.util.xml	2	2	0	1	5	0.0%	83.0%	17.0%	1
org.apache.myfaces.shared_impl.webapp.webxml	7	6	1	0	14	14.0%	100.0%	14.0%	1

Packages

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

org.apache.myfaces.shared_impl.component

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
1	3	100.0%	75.0%	75.0%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
org.apache.myfaces.shared_impl.component.BindingAware org.apache.myfaces.shared_impl.component.DisplayValueOnlyCapable org.apache.myfaces.shared_impl.component.EscapeCapable org.apache.myfaces.shared_impl.component.ExecuteOnCallback	None	org.apache.myfaces.shared_impl.renderkit.html	java.lang javax.faces.component javax.faces.context

org.apache.myfaces.shared_impl.config

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
3	6	0.0%	67.0%	33.0%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
None	org.apache.myfaces.shared_impl.config.MyfacesConfig	org.apache.myfaces.shared_impl.renderkit.html org.apache.myfaces.shared_impl.renderkit.html.util org.apache.myfaces.shared_impl.webapp.webxml	java.lang java.util javax.faces.context javax.servlet org.apache.commons.logging org.apache.myfaces.shared_impl.util

org.apache.myfaces.shared_impl.context

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
0	4	100.0%	100.0%	100.0%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
org.apache.myfaces.shared_impl.context.ResponseWriterWrapper	None	None	java.io java.lang javax.faces.component javax.faces.context

org.apache.myfaces.shared_impl.el

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.myfaces.shared_impl.el.SimpleActionMethodBinding	org.apache.myfaces.shared_impl.taglib	java.lang javax.faces.component javax.faces.context javax.faces.el

org.apache.myfaces.shared_impl.renderkit

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
3	18	20.0%	86.0%	6.0%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
org.apache.myfaces.shared_impl.renderkit.JSFAttr	org.apache.myfaces.shared_impl.renderkit.RendererUtils org.apache.myfaces.shared_impl.renderkit.RendererUtils$1 org.apache.myfaces.shared_impl.renderkit.RendererUtils$PassThroughAsStringConverter org.apache.myfaces.shared_impl.renderkit._SharedRendererUtils	org.apache.myfaces.shared_impl.renderkit.html org.apache.myfaces.shared_impl.taglib org.apache.myfaces.shared_impl.util	java.io java.lang java.lang.reflect java.util javax.el javax.faces javax.faces.application javax.faces.component javax.faces.component.html javax.faces.context javax.faces.convert javax.faces.el javax.faces.event javax.faces.model javax.faces.render org.apache.commons.logging org.apache.myfaces.shared_impl.renderkit.html.util org.apache.myfaces.shared_impl.util

org.apache.myfaces.shared_impl.renderkit.html

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
0	19	21.0%	100.0%	21.0%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
org.apache.myfaces.shared_impl.renderkit.html.HTML org.apache.myfaces.shared_impl.renderkit.html.HtmlLinkRendererBase org.apache.myfaces.shared_impl.renderkit.html.HtmlMessageRendererBase org.apache.myfaces.shared_impl.renderkit.html.HtmlMessagesRendererBase org.apache.myfaces.shared_impl.renderkit.html.HtmlRenderer	org.apache.myfaces.shared_impl.renderkit.html.HtmlButtonRendererBase org.apache.myfaces.shared_impl.renderkit.html.HtmlCheckboxRendererBase org.apache.myfaces.shared_impl.renderkit.html.HtmlFormRendererBase org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase org.apache.myfaces.shared_impl.renderkit.html.HtmlGroupRendererBase org.apache.myfaces.shared_impl.renderkit.html.HtmlImageRendererBase org.apache.myfaces.shared_impl.renderkit.html.HtmlListboxRendererBase org.apache.myfaces.shared_impl.renderkit.html.HtmlMenuRendererBase org.apache.myfaces.shared_impl.renderkit.html.HtmlMessagesRendererBase$MessagesIterator org.apache.myfaces.shared_impl.renderkit.html.HtmlRadioRendererBase org.apache.myfaces.shared_impl.renderkit.html.HtmlRendererUtils org.apache.myfaces.shared_impl.renderkit.html.HtmlRendererUtils$LinkParameter org.apache.myfaces.shared_impl.renderkit.html.HtmlRendererUtils$ScriptContext org.apache.myfaces.shared_impl.renderkit.html.HtmlResponseWriterImpl org.apache.myfaces.shared_impl.renderkit.html.HtmlSecretRendererBase org.apache.myfaces.shared_impl.renderkit.html.HtmlTableRendererBase org.apache.myfaces.shared_impl.renderkit.html.HtmlTableRendererBase$Styles org.apache.myfaces.shared_impl.renderkit.html.HtmlTextRendererBase org.apache.myfaces.shared_impl.renderkit.html.HtmlTextareaRendererBase	None	java.io java.lang java.net java.util javax.faces javax.faces.application javax.faces.component javax.faces.component.html javax.faces.context javax.faces.convert javax.faces.event javax.faces.model javax.faces.render org.apache.commons.logging org.apache.myfaces.shared_impl.component org.apache.myfaces.shared_impl.config org.apache.myfaces.shared_impl.renderkit org.apache.myfaces.shared_impl.renderkit.html.util org.apache.myfaces.shared_impl.util

org.apache.myfaces.shared_impl.renderkit.html.util

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
3	8	50.0%	73.0%	23.0%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
org.apache.myfaces.shared_impl.renderkit.html.util.HTMLEncoder org.apache.myfaces.shared_impl.renderkit.html.util.UnicodeEncoder	org.apache.myfaces.shared_impl.renderkit.html.util.FormInfo org.apache.myfaces.shared_impl.renderkit.html.util.JavascriptUtils	org.apache.myfaces.shared_impl.renderkit org.apache.myfaces.shared_impl.renderkit.html org.apache.myfaces.shared_impl.util	java.io java.lang java.util javax.faces.component javax.faces.context javax.servlet.http org.apache.commons.logging org.apache.myfaces.shared_impl.config

org.apache.myfaces.shared_impl.taglib

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
2	15	67.0%	88.0%	55.0%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
org.apache.myfaces.shared_impl.taglib.UIComponentBodyELTagBase org.apache.myfaces.shared_impl.taglib.UIComponentBodyTagBase org.apache.myfaces.shared_impl.taglib.UIComponentELTagBase org.apache.myfaces.shared_impl.taglib.UIComponentTagBase	org.apache.myfaces.shared_impl.taglib.UIComponentELTagUtils org.apache.myfaces.shared_impl.taglib.UIComponentTagUtils	org.apache.myfaces.shared_impl.taglib.core org.apache.myfaces.shared_impl.taglib.html	java.io java.lang java.util javax.el javax.faces.application javax.faces.component javax.faces.context javax.faces.event javax.faces.validator javax.faces.webapp javax.servlet.jsp javax.servlet.jsp.tagext org.apache.commons.logging org.apache.myfaces.shared_impl.el org.apache.myfaces.shared_impl.renderkit

org.apache.myfaces.shared_impl.taglib.core

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
0	12	0.0%	100.0%	0.0%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
None	org.apache.myfaces.shared_impl.taglib.core.ConvertDateTimeTagBase org.apache.myfaces.shared_impl.taglib.core.SelectItemTagBase	None	java.lang java.util javax.el javax.faces.application javax.faces.component javax.faces.context javax.faces.convert javax.faces.el javax.faces.webapp javax.servlet.jsp org.apache.myfaces.shared_impl.taglib org.apache.myfaces.shared_impl.util

org.apache.myfaces.shared_impl.taglib.html

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
0	5	100.0%	100.0%	100.0%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
org.apache.myfaces.shared_impl.taglib.html.HtmlCommandButtonELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlCommandButtonTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlCommandLinkELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlCommandLinkTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlComponentBodyELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlComponentBodyTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlComponentELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlComponentTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlDataTableELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlDataTableTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlFormELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlFormTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlGraphicImageELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlGraphicImageTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlInputELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlInputHiddenELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlInputHiddenTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlInputSecretELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlInputSecretTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlInputTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlInputTextELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlInputTextTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlInputTextareaELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlInputTextareaTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlMessageELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlMessageTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlMessagesELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlMessagesTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlOutputFormatELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlOutputFormatTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlOutputLabelELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlOutputLabelTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlOutputLinkELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlOutputLinkTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlOutputTextELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlOutputTextTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlPanelGridELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlPanelGridTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlPanelGroupELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlPanelGroupTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlSelectBooleanCheckboxELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlSelectBooleanCheckboxTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlSelectListboxELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlSelectListboxTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlSelectManyCheckboxELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlSelectManyCheckboxTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlSelectMenuELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlSelectMenuTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlSelectOneRadioELTagBase org.apache.myfaces.shared_impl.taglib.html.HtmlSelectOneRadioTagBase	None	None	java.lang java.util javax.el javax.faces.component org.apache.myfaces.shared_impl.taglib

org.apache.myfaces.shared_impl.test

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
0	4	0.0%	100.0%	0.0%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
None	org.apache.myfaces.shared_impl.test.ClassElementHandler	None	java.lang java.util org.xml.sax org.xml.sax.helpers

org.apache.myfaces.shared_impl.trace

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
0	3	17.0%	100.0%	17.0%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
org.apache.myfaces.shared_impl.trace.Closure	org.apache.myfaces.shared_impl.trace.TracingIterator org.apache.myfaces.shared_impl.trace.TracingIterator$1 org.apache.myfaces.shared_impl.trace.TracingIterator$2 org.apache.myfaces.shared_impl.trace.TracingIterator$3 org.apache.myfaces.shared_impl.trace.TracingSupport	None	java.lang java.util java.util.logging

org.apache.myfaces.shared_impl.util

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
6	22	10.0%	79.0%	11.0%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
org.apache.myfaces.shared_impl.util.BiLevelCacheMap org.apache.myfaces.shared_impl.util.ClassLoaderExtension	org.apache.myfaces.shared_impl.util.ArrayUtils org.apache.myfaces.shared_impl.util.Assert org.apache.myfaces.shared_impl.util.ClassUtils org.apache.myfaces.shared_impl.util.ClassUtils$1 org.apache.myfaces.shared_impl.util.ExceptionUtils org.apache.myfaces.shared_impl.util.HashMapUtils org.apache.myfaces.shared_impl.util.LocaleUtils org.apache.myfaces.shared_impl.util.MessageUtils org.apache.myfaces.shared_impl.util.MyFacesObjectInputStream org.apache.myfaces.shared_impl.util.NullEnumeration org.apache.myfaces.shared_impl.util.NullIterator org.apache.myfaces.shared_impl.util.ParametrizableFacesMessage org.apache.myfaces.shared_impl.util.RestoreStateUtils org.apache.myfaces.shared_impl.util.SelectItemsIterator org.apache.myfaces.shared_impl.util.StateUtils org.apache.myfaces.shared_impl.util.StateUtils$1 org.apache.myfaces.shared_impl.util.StringUtils org.apache.myfaces.shared_impl.util._ComponentUtils	org.apache.myfaces.shared_impl.config org.apache.myfaces.shared_impl.renderkit org.apache.myfaces.shared_impl.renderkit.html org.apache.myfaces.shared_impl.taglib.core org.apache.myfaces.shared_impl.util.serial org.apache.myfaces.shared_impl.webapp.webxml	java.io java.lang java.lang.reflect java.security java.text java.util java.util.zip javax.crypto javax.crypto.spec javax.el javax.faces javax.faces.application javax.faces.component javax.faces.context javax.faces.el javax.faces.model javax.servlet org.apache.commons.codec.binary org.apache.commons.logging org.apache.myfaces.shared_impl.renderkit org.apache.myfaces.shared_impl.renderkit.html.util org.apache.myfaces.shared_impl.util.serial

org.apache.myfaces.shared_impl.util.el

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
0	2	80.0%	100.0%	80.0%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
org.apache.myfaces.shared_impl.util.el.ActionsMap org.apache.myfaces.shared_impl.util.el.GenericMap org.apache.myfaces.shared_impl.util.el.StringMap org.apache.myfaces.shared_impl.util.el.TestsMap	org.apache.myfaces.shared_impl.util.el.ActionsMap$CommandEntry	None	java.lang java.util

org.apache.myfaces.shared_impl.util.serial

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
1	3	50.0%	75.0%	25.0%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
org.apache.myfaces.shared_impl.util.serial.SerialFactory	org.apache.myfaces.shared_impl.util.serial.DefaultSerialFactory	org.apache.myfaces.shared_impl.util	java.io java.lang org.apache.myfaces.shared_impl.util

org.apache.myfaces.shared_impl.util.servlet

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
0	4	0.0%	100.0%	0.0%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
None	org.apache.myfaces.shared_impl.util.servlet.SourceCodeServlet	None	java.io java.lang javax.servlet javax.servlet.http

org.apache.myfaces.shared_impl.util.xml

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.myfaces.shared_impl.util.xml.MyFacesErrorHandler org.apache.myfaces.shared_impl.util.xml.XmlUtils	org.apache.myfaces.shared_impl.webapp.webxml	java.lang java.util org.apache.commons.logging org.w3c.dom org.xml.sax

org.apache.myfaces.shared_impl.webapp.webxml

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
0	14	14.0%	100.0%	14.0%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
org.apache.myfaces.shared_impl.webapp.webxml.DelegatedFacesServlet	org.apache.myfaces.shared_impl.webapp.webxml.FilterMapping org.apache.myfaces.shared_impl.webapp.webxml.ServletMapping org.apache.myfaces.shared_impl.webapp.webxml.WebXml org.apache.myfaces.shared_impl.webapp.webxml.WebXmlParser org.apache.myfaces.shared_impl.webapp.webxml.WebXmlParser$1 org.apache.myfaces.shared_impl.webapp.webxml.WebXmlParser$_EntityResolver	None	java.io java.lang java.net java.util javax.faces javax.faces.context javax.faces.webapp javax.xml.parsers org.apache.commons.logging org.apache.myfaces.shared_impl.config org.apache.myfaces.shared_impl.util org.apache.myfaces.shared_impl.util.xml org.w3c.dom org.xml.sax

Cycles

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

Package	Package Dependencies
org.apache.myfaces.shared_impl.config	org.apache.myfaces.shared_impl.util org.apache.myfaces.shared_impl.renderkit org.apache.myfaces.shared_impl.util
org.apache.myfaces.shared_impl.renderkit	org.apache.myfaces.shared_impl.util org.apache.myfaces.shared_impl.renderkit
org.apache.myfaces.shared_impl.renderkit.html	org.apache.myfaces.shared_impl.renderkit.html.util org.apache.myfaces.shared_impl.config org.apache.myfaces.shared_impl.util org.apache.myfaces.shared_impl.renderkit org.apache.myfaces.shared_impl.util
org.apache.myfaces.shared_impl.renderkit.html.util	org.apache.myfaces.shared_impl.config org.apache.myfaces.shared_impl.util org.apache.myfaces.shared_impl.renderkit org.apache.myfaces.shared_impl.util
org.apache.myfaces.shared_impl.taglib	org.apache.myfaces.shared_impl.renderkit org.apache.myfaces.shared_impl.util org.apache.myfaces.shared_impl.renderkit
org.apache.myfaces.shared_impl.taglib.core	org.apache.myfaces.shared_impl.util org.apache.myfaces.shared_impl.renderkit org.apache.myfaces.shared_impl.util
org.apache.myfaces.shared_impl.taglib.html	org.apache.myfaces.shared_impl.taglib org.apache.myfaces.shared_impl.renderkit org.apache.myfaces.shared_impl.util org.apache.myfaces.shared_impl.renderkit
org.apache.myfaces.shared_impl.util	org.apache.myfaces.shared_impl.renderkit org.apache.myfaces.shared_impl.util
org.apache.myfaces.shared_impl.util.serial	org.apache.myfaces.shared_impl.util org.apache.myfaces.shared_impl.renderkit org.apache.myfaces.shared_impl.util
org.apache.myfaces.shared_impl.webapp.webxml	org.apache.myfaces.shared_impl.util org.apache.myfaces.shared_impl.renderkit org.apache.myfaces.shared_impl.util

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.