JavaNCSS Metric Results

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

The following document contains the results of a JavaNCSS metric analysis, using JavaNCSS version 32.53.
JavaNCSS web site.

Packages

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

Packages sorted by NCSS.

PackageClassesMethodsNCSSJavadocsJavadoc linesSingle lines commentMulti lines comment
de.fub.mi.idenpa.sp.servlet22026710784105
Classes totalMethods totalNCSS totalJavadocsJavadoc linesSingle lines commentMulti lines comment
22026710784105

Objects

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

TOP 30 classes containing the most NCSS.

ObjectNCSSMethodsClassesJavadocs
de.fub.mi.idenpa.sp.servlet.VerifierServlet137806
de.fub.mi.idenpa.sp.servlet.VerifierServletConfig821204

TOP 30 classes containing the most methods.

ObjectNCSSMethodsClassesJavadocs
de.fub.mi.idenpa.sp.servlet.VerifierServletConfig821204
de.fub.mi.idenpa.sp.servlet.VerifierServlet137806

Averages.

NCSS averageProgram NCSSClasses averageMethods averageJavadocs average
109.50267.000.0010.005.00

Methods

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

TOP 30 Methods containing the most NCSS.

MethodsNCSSCCNJavadocs
de.fub.mi.idenpa.sp.servlet.VerifierServletConfig.VerifierServletConfig(ServletConfig)2441
de.fub.mi.idenpa.sp.servlet.VerifierServlet.doPost(HttpServletRequest,HttpServletResponse)23110
de.fub.mi.idenpa.sp.servlet.VerifierServlet.doGet(HttpServletRequest,HttpServletResponse)2280
de.fub.mi.idenpa.sp.servlet.VerifierServlet.sendError(HttpServletResponse,int)2261
de.fub.mi.idenpa.sp.servlet.VerifierServlet.toString(ServletInputStream)1841
de.fub.mi.idenpa.sp.servlet.VerifierServlet.sendSuccessFile(HttpServletResponse,String)1751
de.fub.mi.idenpa.sp.servlet.VerifierServlet.init(ServletConfig)1020
de.fub.mi.idenpa.sp.servlet.VerifierServletConfig.getSP(String)920
de.fub.mi.idenpa.sp.servlet.VerifierServletConfig.addLocation(UriMap,boolean)961
de.fub.mi.idenpa.sp.servlet.VerifierServlet.checkInput(RedirectContext,HttpServletRequest,HttpServletResponse)841
de.fub.mi.idenpa.sp.servlet.VerifierServletConfig.getSpec(String)820
de.fub.mi.idenpa.sp.servlet.VerifierServlet.sendSuccess(HttpServletResponse,String)511
de.fub.mi.idenpa.sp.servlet.VerifierServletConfig.addLocation(UriMap)321
de.fub.mi.idenpa.sp.servlet.VerifierServletConfig.getSpecMaps()210
de.fub.mi.idenpa.sp.servlet.VerifierServletConfig.getLocation(String)210
de.fub.mi.idenpa.sp.servlet.VerifierServletConfig.getDefaultHome()210
de.fub.mi.idenpa.sp.servlet.VerifierServletConfig.getDefaultError(int,String)210
de.fub.mi.idenpa.sp.servlet.VerifierServletConfig.getDefaultProofResult()210
de.fub.mi.idenpa.sp.servlet.VerifierServletConfig.getDefaultProof()210
de.fub.mi.idenpa.sp.servlet.VerifierServletConfig.getDefaultVerify()210

Averages.

Program NCSSNCSS averageCCN averageJavadocs average
267.009.603.200.40

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).