JavaNCSS Metric Results

[ package ] [ object ] [ method ] [ explanation ]

The following document contains the results of a JavaNCSS metric analysis.
JavaNCSS web site.

Packages

[ package ] [ object ] [ method ] [ explanation ]

Packages sorted by NCSS.

PackageClassesMethodsNCSSJavadocsJavadoc linesSingle lines commentMulti lines comment
org.apache.myfaces.tobago.example.addressbook.web141246723173256
org.apache.myfaces.tobago.example.addressbook9883883370161
Classes totalMethods totalNCSS totalJavadocsJavadoc linesSingle lines commentMulti lines comment
2321210606543417

Objects

[ package ] [ object ] [ method ] [ explanation ]

TOP 30 classes containing the most NCSS.

ObjectNCSSMethodsClassesJavadocs
org.apache.myfaces.tobago.example.addressbook.web.Controller2105300
org.apache.myfaces.tobago.example.addressbook.Address1645000
org.apache.myfaces.tobago.example.addressbook.web.LoggingController1072510
org.apache.myfaces.tobago.example.addressbook.web.Layout471200
org.apache.myfaces.tobago.example.addressbook.JpaAddressDao36500
org.apache.myfaces.tobago.example.addressbook.InMemoryAddressDao32600
org.apache.myfaces.tobago.example.addressbook.Log4jUtils28502
org.apache.myfaces.tobago.example.addressbook.web.AdminController27400
org.apache.myfaces.tobago.example.addressbook.EmailAddress27800
org.apache.myfaces.tobago.example.addressbook.web.RandomAddressGenerator23301
org.apache.myfaces.tobago.example.addressbook.web.CategoryModel23801
org.apache.myfaces.tobago.example.addressbook.web.PictureServlet19100
org.apache.myfaces.tobago.example.addressbook.web.LocaleConverter19300
org.apache.myfaces.tobago.example.addressbook.web.AppenderModel16501
org.apache.myfaces.tobago.example.addressbook.web.MessageUtils15500
org.apache.myfaces.tobago.example.addressbook.Picture15500
org.apache.myfaces.tobago.example.addressbook.web.EmailAddressValidator14100
org.apache.myfaces.tobago.example.addressbook.web.EmailAddressConverter11200
org.apache.myfaces.tobago.example.addressbook.web.Countries9100
org.apache.myfaces.tobago.example.addressbook.DerbyShutdownServletContextListener7200
org.apache.myfaces.tobago.example.addressbook.OpenJpaLoadTimeWeaver7201
org.apache.myfaces.tobago.example.addressbook.AddressDao6500
org.apache.myfaces.tobago.example.addressbook.web.SelectItemComparator4100

TOP 30 classes containing the most methods.

ObjectNCSSMethodsClassesJavadocs
org.apache.myfaces.tobago.example.addressbook.web.Controller2105300
org.apache.myfaces.tobago.example.addressbook.Address1645000
org.apache.myfaces.tobago.example.addressbook.web.LoggingController1072510
org.apache.myfaces.tobago.example.addressbook.web.Layout471200
org.apache.myfaces.tobago.example.addressbook.web.CategoryModel23801
org.apache.myfaces.tobago.example.addressbook.EmailAddress27800
org.apache.myfaces.tobago.example.addressbook.InMemoryAddressDao32600
org.apache.myfaces.tobago.example.addressbook.web.AppenderModel16501
org.apache.myfaces.tobago.example.addressbook.web.MessageUtils15500
org.apache.myfaces.tobago.example.addressbook.Log4jUtils28502
org.apache.myfaces.tobago.example.addressbook.JpaAddressDao36500
org.apache.myfaces.tobago.example.addressbook.AddressDao6500
org.apache.myfaces.tobago.example.addressbook.Picture15500
org.apache.myfaces.tobago.example.addressbook.web.AdminController27400
org.apache.myfaces.tobago.example.addressbook.web.LocaleConverter19300
org.apache.myfaces.tobago.example.addressbook.web.RandomAddressGenerator23301
org.apache.myfaces.tobago.example.addressbook.web.EmailAddressConverter11200
org.apache.myfaces.tobago.example.addressbook.DerbyShutdownServletContextListener7200
org.apache.myfaces.tobago.example.addressbook.OpenJpaLoadTimeWeaver7201
org.apache.myfaces.tobago.example.addressbook.web.PictureServlet19100
org.apache.myfaces.tobago.example.addressbook.web.EmailAddressValidator14100
org.apache.myfaces.tobago.example.addressbook.web.SelectItemComparator4100
org.apache.myfaces.tobago.example.addressbook.web.Countries9100

Averages.

NCSS averageProgram NCSSClasses averageMethods averageJavadocs average
37.651,060.000.049.220.26

Methods

[ package ] [ object ] [ method ] [ explanation ]

TOP 30 Methods containing the most NCSS.

MethodsNCSSCCNJavadocs
org.apache.myfaces.tobago.example.addressbook.Address.fill(Address)2110
org.apache.myfaces.tobago.example.addressbook.web.PictureServlet.invokeApplication(FacesContext)1750
org.apache.myfaces.tobago.example.addressbook.JpaAddressDao.findAddresses(String,String,boolean)1760
org.apache.myfaces.tobago.example.addressbook.web.Controller.init()1620
org.apache.myfaces.tobago.example.addressbook.web.RandomAddressGenerator.generateAddress(boolean,boolean)1440
org.apache.myfaces.tobago.example.addressbook.web.Controller.deleteAddresses()1340
org.apache.myfaces.tobago.example.addressbook.web.AdminController.getUpdateMemory()1330
org.apache.myfaces.tobago.example.addressbook.web.LoggingController.initCategories()1220
org.apache.myfaces.tobago.example.addressbook.InMemoryAddressDao.updateAddress(Address)1220
org.apache.myfaces.tobago.example.addressbook.web.LocaleConverter.createLocale(String)1170
org.apache.myfaces.tobago.example.addressbook.web.LoggingController.LoggingController()1110
org.apache.myfaces.tobago.example.addressbook.web.Controller.initLanguages()1020
org.apache.myfaces.tobago.example.addressbook.web.LoggingController.downloadLogFile()1010
org.apache.myfaces.tobago.example.addressbook.web.LoggingController.updateCategories()1040
org.apache.myfaces.tobago.example.addressbook.web.Layout.getWidth()1070
org.apache.myfaces.tobago.example.addressbook.web.Layout.getHeight()1070
org.apache.myfaces.tobago.example.addressbook.web.Controller.createAddress()920
org.apache.myfaces.tobago.example.addressbook.web.Controller.editAddress()930
org.apache.myfaces.tobago.example.addressbook.Log4jUtils.getFileAppender(String,LoggerRepository)960
org.apache.myfaces.tobago.example.addressbook.JpaAddressDao.updateAddress(Address)940
org.apache.myfaces.tobago.example.addressbook.EmailAddress.equals(Object)990
org.apache.myfaces.tobago.example.addressbook.web.EmailAddressValidator.validate(FacesContext,UIComponent,Object)850
org.apache.myfaces.tobago.example.addressbook.web.Countries.init(Locale)840
org.apache.myfaces.tobago.example.addressbook.Address.store()840
org.apache.myfaces.tobago.example.addressbook.web.EmailAddressConverter.getAsObject(FacesContext,UIComponent,String)770
org.apache.myfaces.tobago.example.addressbook.web.LoggingController.addCategory()710
org.apache.myfaces.tobago.example.addressbook.Address.load()750
org.apache.myfaces.tobago.example.addressbook.web.AppenderModel.getLayout()630
org.apache.myfaces.tobago.example.addressbook.web.Controller.sheetSorter(ActionEvent)620
org.apache.myfaces.tobago.example.addressbook.web.Controller.store()610

Averages.

Program NCSSNCSS averageCCN averageJavadocs average
1,060.003.541.540.00

Explanations

[ package ] [ object ] [ method ] [ explanation ]

Non Commenting Source Statements (NCSS)

Statements for JavaNCSS are not statements as specified in the Java Language Specification but include all kinds of declarations too. Roughly spoken, NCSS is approximately equivalent to counting ';' and '{' characters in Java source files.

Not counted are empty statements, empty blocks or semicolons after closing brackets. Of course, comments don't get counted too. Closing brackets also never get counted, the same applies to blocks in general.

Examples
Package declarationpackage java.lang;
Import declarationimport java.awt.*;
Class declaration
  • public class Foo {
  • public class Foo extends Bla {
Interface declarationpublic interface Able ; {
Field declaration
  • int a;
  • int a, b, c = 5, d = 6;
Method declaration
  • public void cry();
  • public void gib() throws DeadException {
Constructor declarationpublic Foo() {
Constructor invocation
  • this();
  • super();
Statement declaration
  • i = 0;
  • if (ok)
  • if (exit) {
  • if (3 == 4);
  • if (4 == 4) { ;
  • } else {
Label declarationfine :
In some cases consecutive semicolons are illegal according to the JLS but JavaNCSS still tolerates them (thought JavaNCSS is still more strict as 'javac'). Nevertheless they are never counted as two statements.

Cyclomatic Complexity Number (CCN)

CCN is also know as McCabe Metric. There exists a much hyped theory behind it based on graph theory, but it all comes down to simply counting 'if', 'for', 'while' statements etc. in a method. Whenever the control flow of a method splits, the "CCN counter" gets incremented by one.

Each method has a minimum value of 1 per default. For each of the following Java keywords/statements this value gets incremented by one:

  • if
  • for
  • while
  • case
  • catch
Also if the control flow of a method returns abortively the CCNvalue will be incremented by one:
  • if
  • for
An ordinary return at the end of method will not be counted.

Note that 'else', 'default', and 'finally' don't increment the CCN value any further. On the other hand, a simple method with a 'switch' statement and a huge block of 'case' statements can have a surprisingly high CCN value (still it has the same value when converting a 'switch' block to an equivalent sequence of 'if' statements).

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