JavaNCSS Metric Results

[ package ] [ object ] [ function ] [ explanation ]

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

Packages

[ package ] [ object ] [ function ] [ explanation ]

Packages sorted by NCSS.

PackageClassesFunctionsNCSSJavadocsJavadoc linesSingle lines commentMulti lines comment
net.sf.jgabl2.graph.hier1221493046914772
net.sf.jgabl2.accessor.impl2730736259
net.sf.jgabl2.adapt35177433617
net.sf.jgabl2.accessor46161098480
net.sf.jgabl2.graph.prop1315430150
net.sf.jgabl2.adapt.impl111216141
net.sf.jgabl2.graph.adapt129318150
Classes totalFunctions totalNCSS totalJavadocsJavadoc linesSingle lines commentMulti lines comment
24451486270030099

Objects

[ package ] [ object ] [ function ] [ explanation ]

TOP 30 classes containing the most NCSS.

ObjectNCSSFunctionsClassesJavadocs
net.sf.jgabl2.accessor.impl.DataAccessorArrayImpl15302
net.sf.jgabl2.accessor.impl.AbstractLockableDataAccessor11405
net.sf.jgabl2.graph.prop.GraphPropertyFactory10314
net.sf.jgabl2.adapt.impl.GenericAdapterManagerImpl8101
net.sf.jgabl2.adapt.UnavailableAdapterException8304
net.sf.jgabl2.graph.hier.IEdgeSupport6506
net.sf.jgabl2.graph.adapt.EdgeIndexAccessor5203
net.sf.jgabl2.graph.hier.IEdgeIndexSupport4304
net.sf.jgabl2.graph.hier.IGraph4304
net.sf.jgabl2.graph.hier.IVertexIndexSupport4304
net.sf.jgabl2.accessor.IInspectableDataAccessor3203
net.sf.jgabl2.accessor.ILockableDataAccessor3203
net.sf.jgabl2.adapt.IGenericAdapterManager3101
net.sf.jgabl2.graph.hier.IReverseEdgeSupport3203
net.sf.jgabl2.graph.hier.IWeightedAdjacencyGraph3203
net.sf.jgabl2.accessor.IDataAccessor2102
net.sf.jgabl2.accessor.IMutableDataAccessor2102
net.sf.jgabl2.adapt.IGenericAdaptable2102
net.sf.jgabl2.graph.hier.IEdgeIteratable2101
net.sf.jgabl2.graph.hier.IIncidentEdgeIteratable2101
net.sf.jgabl2.graph.hier.IVertexIteratable2101
net.sf.jgabl2.graph.hier.IAdjacencyDigraph1001
net.sf.jgabl2.graph.hier.IEdge1001
net.sf.jgabl2.graph.hier.IVertex1001

TOP 30 classes containing the most functions.

ObjectNCSSFunctionsClassesJavadocs
net.sf.jgabl2.graph.hier.IEdgeSupport6506
net.sf.jgabl2.accessor.impl.AbstractLockableDataAccessor11405
net.sf.jgabl2.accessor.impl.DataAccessorArrayImpl15302
net.sf.jgabl2.adapt.UnavailableAdapterException8304
net.sf.jgabl2.graph.hier.IEdgeIndexSupport4304
net.sf.jgabl2.graph.hier.IGraph4304
net.sf.jgabl2.graph.hier.IVertexIndexSupport4304
net.sf.jgabl2.graph.prop.GraphPropertyFactory10314
net.sf.jgabl2.accessor.IInspectableDataAccessor3203
net.sf.jgabl2.accessor.ILockableDataAccessor3203
net.sf.jgabl2.graph.adapt.EdgeIndexAccessor5203
net.sf.jgabl2.graph.hier.IReverseEdgeSupport3203
net.sf.jgabl2.graph.hier.IWeightedAdjacencyGraph3203
net.sf.jgabl2.accessor.IDataAccessor2102
net.sf.jgabl2.accessor.IMutableDataAccessor2102
net.sf.jgabl2.adapt.IGenericAdaptable2102
net.sf.jgabl2.adapt.IGenericAdapterManager3101
net.sf.jgabl2.adapt.impl.GenericAdapterManagerImpl8101
net.sf.jgabl2.graph.hier.IEdgeIteratable2101
net.sf.jgabl2.graph.hier.IIncidentEdgeIteratable2101
net.sf.jgabl2.graph.hier.IVertexIteratable2101
net.sf.jgabl2.graph.hier.IAdjacencyDigraph1001
net.sf.jgabl2.graph.hier.IEdge1001
net.sf.jgabl2.graph.hier.IVertex1001
Averages.
NCSS averageProgram NCSSClasses averageFunctions averageJavadocs average
4.38148.000.041.882.58

Functions

[ package ] [ object ] [ function ] [ explanation ]

TOP 30 functions containing the most NCSS.

FunctionsNCSSCCNJavadocs
net.sf.jgabl2.adapt.impl.GenericAdapterManagerImpl.getAdapter(Object,Class)760
net.sf.jgabl2.graph.prop.GraphPropertyFactory.createVertexProperty(IAdjacencyDigraph,String,Class,Object)611
net.sf.jgabl2.accessor.impl.DataAccessorArrayImpl.get(Key)531
net.sf.jgabl2.accessor.impl.AbstractLockableDataAccessor.set(Key,Value)431
net.sf.jgabl2.accessor.impl.DataAccessorArrayImpl.setUnchecked(Key,Value)420
net.sf.jgabl2.graph.prop.GraphPropertyFactory.HashMap$1.get(Object)430
net.sf.jgabl2.accessor.impl.DataAccessorArrayImpl.DataAccessorArrayImpl(int,IDataAccessor)310
net.sf.jgabl2.graph.adapt.EdgeIndexAccessor.get(Object)311
net.sf.jgabl2.accessor.impl.AbstractLockableDataAccessor.isLocked()211
net.sf.jgabl2.accessor.impl.AbstractLockableDataAccessor.setLocked(boolean)211
net.sf.jgabl2.adapt.UnavailableAdapterException.UnavailableAdapterException()211
net.sf.jgabl2.adapt.UnavailableAdapterException.UnavailableAdapterException(String,Throwable)211
net.sf.jgabl2.adapt.UnavailableAdapterException.UnavailableAdapterException(String)211
net.sf.jgabl2.graph.prop.GraphPropertyFactory.createVertexProperty(IAdjacencyDigraph,String,Object)211
net.sf.jgabl2.accessor.IDataAccessor.get(Key)111
net.sf.jgabl2.accessor.IInspectableDataAccessor.keySet()111
net.sf.jgabl2.accessor.IInspectableDataAccessor.entrySet()111
net.sf.jgabl2.accessor.ILockableDataAccessor.isLocked()111
net.sf.jgabl2.accessor.ILockableDataAccessor.setLocked(boolean)111
net.sf.jgabl2.accessor.impl.AbstractLockableDataAccessor.setUnchecked(Key,Value)111
net.sf.jgabl2.accessor.IMutableDataAccessor.set(Key,Value)111
net.sf.jgabl2.adapt.IGenericAdaptable.getAdapter(Class)111
net.sf.jgabl2.adapt.IGenericAdapterManager.getAdapter(Object,Class)110
net.sf.jgabl2.graph.adapt.EdgeIndexAccessor.EdgeIndexAccessor()111
net.sf.jgabl2.graph.hier.IEdgeIndexSupport.getNumberOfEdges()111
net.sf.jgabl2.graph.hier.IEdgeIndexSupport.getEdgeFromIndex(int)111
net.sf.jgabl2.graph.hier.IEdgeIndexSupport.getIndexFromEdge(IEdge)111
net.sf.jgabl2.graph.hier.IEdgeIteratable.getEdges()110
net.sf.jgabl2.graph.hier.IEdgeSupport.getSourceVertex(IEdge)111
net.sf.jgabl2.graph.hier.IEdgeSupport.getTargetVertex(IEdge)111

Averages.

Program NCSSNCSS averageCCN averageJavadocs average
148.001.741.260.83

Explanations

[ package ] [ object ] [ function ] [ 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.

ExamplesComments
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 {
expression, if, else, while, do, for, switch, break, continue, return, throw, synchronized, catch, finally
Label declarationfine :normal, case, default
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 (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 :).