JavaNCSS Metric Results

[ packages] [ objects] [ functions] [ explanations]

The following document contains the results of a JavaNCSSmetric analysis.

Packages

[ packages] [ objects] [ functions] [ explanations]

Packages sorted by NCSS

PackageClassesFunctions NCSS JavadocsJavadoc LinesSingle Comment LinesMulti Comment Lines
org.apache.fulcrum.yaafi.framework.container569570722804690
org.apache.fulcrum.yaafi.cli213651356632
org.apache.fulcrum.yaafi.framework.factory13504151118
org.apache.fulcrum.yaafi.service.baseservice28381041133
org.apache.fulcrum.yaafi.service.systemproperty2224419032
org.apache.fulcrum.yaafi.service.servicemanager1723723617
Classes totalFunctions total NCSS total JavadocsJavadoc LinesSingle Comment LinesMulti Comment Lines
1310277011043470222

Objects

[ packages] [ objects] [ functions] [ explanations]

TOP 30 classes containing the most NCSS

Object NCSS FunctionsClassesJavadocs
org.apache.fulcrum.yaafi.framework.container.ServiceContainerImpl28731031
org.apache.fulcrum.yaafi.framework.container.ServiceComponentImpl20331031
org.apache.fulcrum.yaafi.cli.Main4511010
org.apache.fulcrum.yaafi.framework.factory.ServiceManagerFactory44304
org.apache.fulcrum.yaafi.service.baseservice.BaseServiceImpl21809
org.apache.fulcrum.yaafi.service.servicemanager.ServiceManagerService17707
org.apache.fulcrum.yaafi.service.systemproperty.SystemPropertyServiceImpl17203
org.apache.fulcrum.yaafi.framework.container.ServiceConstants11001
org.apache.fulcrum.yaafi.cli.Shutdown10203
org.apache.fulcrum.yaafi.framework.container.ServiceComponent8708
org.apache.fulcrum.yaafi.framework.container.ServiceContainer1001
org.apache.fulcrum.yaafi.service.baseservice.BaseService1001
org.apache.fulcrum.yaafi.service.systemproperty.SystemPropertyService1001

TOP 30 classes containing the most functions

ObjectNCSS Functions ClassesJavadocs
org.apache.fulcrum.yaafi.framework.container.ServiceComponentImpl20331031
org.apache.fulcrum.yaafi.framework.container.ServiceContainerImpl28731031
org.apache.fulcrum.yaafi.cli.Main4511010
org.apache.fulcrum.yaafi.service.baseservice.BaseServiceImpl21809
org.apache.fulcrum.yaafi.framework.container.ServiceComponent8708
org.apache.fulcrum.yaafi.service.servicemanager.ServiceManagerService17707
org.apache.fulcrum.yaafi.framework.factory.ServiceManagerFactory44304
org.apache.fulcrum.yaafi.cli.Shutdown10203
org.apache.fulcrum.yaafi.service.systemproperty.SystemPropertyServiceImpl17203
org.apache.fulcrum.yaafi.framework.container.ServiceConstants11001
org.apache.fulcrum.yaafi.framework.container.ServiceContainer1001
org.apache.fulcrum.yaafi.service.baseservice.BaseService1001
org.apache.fulcrum.yaafi.service.systemproperty.SystemPropertyService1001

Averages

NCSS average Program NCSSClasses averageFunctions averageJavadocs average
51.23770.000.007.858.46

Functions

[ packages] [ objects] [ functions] [ explanations]

TOP 30 functions containing the most NCSS

Function NCSS CCNJavadoc
org.apache.fulcrum.yaafi.framework.container.ServiceContainerImpl.contextualize(Context)25101
org.apache.fulcrum.yaafi.framework.factory.ServiceManagerFactory.create(Logger,String,String,String,Context)2561
org.apache.fulcrum.yaafi.framework.container.ServiceContainerImpl.initialize()2361
org.apache.fulcrum.yaafi.framework.container.ServiceContainerImpl.getInputStream(String)2391
org.apache.fulcrum.yaafi.framework.container.ServiceContainerImpl.lookup(String)2071
org.apache.fulcrum.yaafi.framework.container.ServiceContainerImpl.createServiceComponents(Configuration,Logger)2071
org.apache.fulcrum.yaafi.framework.container.ServiceContainerImpl.dispose()1631
org.apache.fulcrum.yaafi.framework.container.ServiceContainerImpl.getRoleConfigurationList(Configuration)1661
org.apache.fulcrum.yaafi.framework.container.ServiceComponentImpl.ServiceComponentImpl(Configuration,Logger)1521
org.apache.fulcrum.yaafi.service.systemproperty.SystemPropertyServiceImpl.configure(Configuration)1531
org.apache.fulcrum.yaafi.framework.container.ServiceComponentImpl.configure(Configuration)1461
org.apache.fulcrum.yaafi.framework.container.ServiceComponentImpl.contextualize(Context)1361
org.apache.fulcrum.yaafi.framework.container.ServiceComponentImpl.service(ServiceManager)1361
org.apache.fulcrum.yaafi.framework.container.ServiceComponentImpl.parameterize(Parameters)1361
org.apache.fulcrum.yaafi.framework.container.ServiceComponentImpl.initialize()1261
org.apache.fulcrum.yaafi.framework.container.ServiceComponentImpl.execute()1261
org.apache.fulcrum.yaafi.framework.container.ServiceComponentImpl.start()1261
org.apache.fulcrum.yaafi.framework.container.ServiceContainerImpl.reconfigure(Configuration)1241
org.apache.fulcrum.yaafi.framework.container.ServiceContainerImpl.loadParameters(String)1231
org.apache.fulcrum.yaafi.framework.factory.ServiceManagerFactory.createConfiguration(String,String,String)1211
org.apache.fulcrum.yaafi.framework.container.ServiceComponentImpl.reconfigure(Configuration)1031
org.apache.fulcrum.yaafi.framework.container.ServiceContainerImpl.ServiceContainerImpl()1011
org.apache.fulcrum.yaafi.framework.container.ServiceContainerImpl.incarnate(ServiceComponent)1011
org.apache.fulcrum.yaafi.framework.container.ServiceContainerImpl.decommision(ServiceComponent)1031
org.apache.fulcrum.yaafi.cli.Main.main(String[])931
org.apache.fulcrum.yaafi.framework.container.ServiceComponentImpl.enableLogging(Logger)941
org.apache.fulcrum.yaafi.framework.container.ServiceContainerImpl.isInContext(Context,String)971
org.apache.fulcrum.yaafi.framework.container.ServiceContainerImpl.setApplicationRootDir(File)951
org.apache.fulcrum.yaafi.framework.container.ServiceContainerImpl.setTempRootDir(File)951
org.apache.fulcrum.yaafi.framework.container.ServiceComponentImpl.stop()841
Program NCSS: NCSS average CCN averageJavadocs average
770.005.932.260.95

Explanations

[ packages] [ objects] [ functions] [ explanations]

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.

Actually, the NCSS counter gets incremented by one for each:

ExamplesComment
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;
No matter how many fields get actually declared through a comma separated list, and no matter if these fields get actually initialized, only one statement is counted. So "int a, b, c = 5, d = 6;" gets only +1 count, not four or even six (let me know if there is good reason to count it differently).
Method declaration- public void cry();

- public void gib() throws DeadException {
Constructor declarationpublic Foo() {
Constructor invocation- this();

- super();
Statement- i = 0;

- if (ok)

- if (exit) {

- if (3 == 4);

- if (4 == 4) { ; }

- } else {
expression, if, else, while, do, for, switch, break, continue, return, throw, synchronized, catch, finally
Labelfine :normal, case, default

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.

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:
  • return
  • throw

An ordinary return at the end of method (no matter if it's a function or a procedure) will not be counted.

Note that else, default, and finallydon't increment the CCN value any further. On the other hand, a simple method with a switchstatement and a huge block of casestatements can have a surprisingly high CCN value (still it has the same value when converting a switchblock to an equivalent sequence of ifstatements).

The first article about this trivial software metric is one of the most cited papers in computer science. Sometimes you just must be the first to point out some basic shit and you are history. It seems just like a wonder that nobody was able to package Lines of Code in a more scientific manner. Now it's too late to label someone's name on it :).