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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.

Package Classes Methods NCSS Javadocs Javadoc lines Single lines comment Multi lines comment
io.github.prolobjectlink.prolog.jlog 42 375 2549 38 197 77 820
Classes total Methods total NCSS total Javadocs Javadoc lines Single lines comment Multi lines comment
42 375 2549 38 197 77 820

Objects

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

TOP 30 classes containing the most NCSS.

Object NCSS Methods Classes Javadocs
io.github.prolobjectlink.prolog.jlog.JLogEngine 288 46 0 2
io.github.prolobjectlink.prolog.jlog.JLogTerm 280 38 0 5
io.github.prolobjectlink.prolog.jlog.JLogQuery 217 18 0 1
io.github.prolobjectlink.prolog.jlog.JLogUtil 211 9 0 1
io.github.prolobjectlink.prolog.jlog.JLogConverter 201 10 0 1
io.github.prolobjectlink.prolog.jlog.JLog 132 41 0 1
io.github.prolobjectlink.prolog.jlog.JLogMap 132 32 1 1
io.github.prolobjectlink.prolog.jlog.JLogList 62 14 1 1
io.github.prolobjectlink.prolog.jlog.JLogFormatter 56 1 0 1
io.github.prolobjectlink.prolog.jlog.JLogEntry 55 13 0 1
io.github.prolobjectlink.prolog.jlog.jLong 54 11 0 1
io.github.prolobjectlink.prolog.jlog.JLogClauses 53 11 0 0
io.github.prolobjectlink.prolog.jlog.jDouble 50 11 0 1
io.github.prolobjectlink.prolog.jlog.JLogStructure 49 13 0 1
io.github.prolobjectlink.prolog.jlog.JLogClause 30 5 0 1
io.github.prolobjectlink.prolog.jlog.JLogLogger 25 3 0 1
io.github.prolobjectlink.prolog.jlog.JLogVariable 25 12 0 1
io.github.prolobjectlink.prolog.jlog.JLogReference 20 8 0 0
io.github.prolobjectlink.prolog.jlog.JLogFloat 15 7 0 1
io.github.prolobjectlink.prolog.jlog.JLogInteger 15 7 0 1
io.github.prolobjectlink.prolog.jlog.JLogNumber 15 7 0 1
io.github.prolobjectlink.prolog.jlog.JLogMap.PrologMapIterator 14 3 0 0
io.github.prolobjectlink.prolog.jlog.JLogAtom 13 6 0 1
io.github.prolobjectlink.prolog.jlog.JLogIterator 13 3 1 1
io.github.prolobjectlink.prolog.jlog.JLogCut 10 4 0 1
io.github.prolobjectlink.prolog.jlog.JLogFalse 10 4 0 1
io.github.prolobjectlink.prolog.jlog.JLogList.JLogListIter 10 3 0 0
io.github.prolobjectlink.prolog.jlog.JLogNil 10 4 0 1
io.github.prolobjectlink.prolog.jlog.JLogEmpty 9 4 0 1
io.github.prolobjectlink.prolog.jlog.JLogFail 9 4 0 1

TOP 30 classes containing the most methods.

Object NCSS Methods Classes Javadocs
io.github.prolobjectlink.prolog.jlog.JLogEngine 288 46 0 2
io.github.prolobjectlink.prolog.jlog.JLog 132 41 0 1
io.github.prolobjectlink.prolog.jlog.JLogTerm 280 38 0 5
io.github.prolobjectlink.prolog.jlog.JLogMap 132 32 1 1
io.github.prolobjectlink.prolog.jlog.JLogQuery 217 18 0 1
io.github.prolobjectlink.prolog.jlog.JLogList 62 14 1 1
io.github.prolobjectlink.prolog.jlog.JLogEntry 55 13 0 1
io.github.prolobjectlink.prolog.jlog.JLogStructure 49 13 0 1
io.github.prolobjectlink.prolog.jlog.JLogVariable 25 12 0 1
io.github.prolobjectlink.prolog.jlog.jDouble 50 11 0 1
io.github.prolobjectlink.prolog.jlog.JLogClauses 53 11 0 0
io.github.prolobjectlink.prolog.jlog.jLong 54 11 0 1
io.github.prolobjectlink.prolog.jlog.JLogConverter 201 10 0 1
io.github.prolobjectlink.prolog.jlog.JLogUtil 211 9 0 1
io.github.prolobjectlink.prolog.jlog.JLogReference 20 8 0 0
io.github.prolobjectlink.prolog.jlog.JLogFloat 15 7 0 1
io.github.prolobjectlink.prolog.jlog.JLogInteger 15 7 0 1
io.github.prolobjectlink.prolog.jlog.JLogNumber 15 7 0 1
io.github.prolobjectlink.prolog.jlog.JLogAtom 13 6 0 1
io.github.prolobjectlink.prolog.jlog.JLogClause 30 5 0 1
io.github.prolobjectlink.prolog.jlog.JLogCut 10 4 0 1
io.github.prolobjectlink.prolog.jlog.JLogEmpty 9 4 0 1
io.github.prolobjectlink.prolog.jlog.JLogFail 9 4 0 1
io.github.prolobjectlink.prolog.jlog.JLogFalse 10 4 0 1
io.github.prolobjectlink.prolog.jlog.JLogNil 10 4 0 1
io.github.prolobjectlink.prolog.jlog.JLogTrue 9 4 0 1
io.github.prolobjectlink.prolog.jlog.jMultifile 9 4 0 0
io.github.prolobjectlink.prolog.jlog.JLogDouble 7 3 0 1
io.github.prolobjectlink.prolog.jlog.JLogIterator 13 3 1 1
io.github.prolobjectlink.prolog.jlog.JLogList.JLogListIter 10 3 0 0

Averages.

NCSS average Program NCSS Classes average Methods average Javadocs average
50.95 2,549.00 0.07 8.93 0.90

Methods

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

TOP 30 Methods containing the most NCSS.

Methods NCSS CCN Javadocs
io.github.prolobjectlink.prolog.jlog.JLogTerm.compareTo(PrologTerm) 98 61 0
io.github.prolobjectlink.prolog.jlog.JLogConverter.toTerm(jTerm) 95 55 0
io.github.prolobjectlink.prolog.jlog.JLogUtil.toTerm(PrologProvider,Object) 55 31 0
io.github.prolobjectlink.prolog.jlog.JLogConverter.fromTerm(PrologTerm) 53 40 0
io.github.prolobjectlink.prolog.jlog.JLogFormatter.format(LogRecord) 50 10 0
io.github.prolobjectlink.prolog.jlog.JLogTerm.unify(JLogTerm,PrologTerm) 48 29 0
io.github.prolobjectlink.prolog.jlog.JLogUtil.toRule(String,jPrologServices) 44 18 0
io.github.prolobjectlink.prolog.jlog.JLogUtil.toString(jPrologServices) 37 8 0
io.github.prolobjectlink.prolog.jlog.JLogEngine.currentOperators() 35 9 0
io.github.prolobjectlink.prolog.jlog.JLogUtil.toString(String,jCompoundTerm) 29 9 0
io.github.prolobjectlink.prolog.jlog.JLogQuery.JLogQuery(AbstractEngine,PrologTerm,PrologTerm[]) 28 4 0
io.github.prolobjectlink.prolog.jlog.JLogEngine.clauseOrRetract(jRule,boolean) 23 11 1
io.github.prolobjectlink.prolog.jlog.JLogEngine.getType(String) 23 8 0
io.github.prolobjectlink.prolog.jlog.JLogQuery.JLogQuery(AbstractEngine,PrologTerm[]) 23 4 0
io.github.prolobjectlink.prolog.jlog.JLogTerm.isEvaluable() 23 9 0
io.github.prolobjectlink.prolog.jlog.jLong.compare(jTerm,boolean,boolean) 22 18 0
io.github.prolobjectlink.prolog.jlog.JLogEntry.equals(Object) 21 17 0
io.github.prolobjectlink.prolog.jlog.JLogQuery.JLogQuery(AbstractEngine,String) 21 3 0
io.github.prolobjectlink.prolog.jlog.JLogQuery.JLogQuery(AbstractEngine,PrologTerm) 21 2 0
io.github.prolobjectlink.prolog.jlog.JLog.parseTerms(String) 19 6 0
io.github.prolobjectlink.prolog.jlog.JLogEngine.iterator() 19 5 0
io.github.prolobjectlink.prolog.jlog.jDouble.compare(jTerm,boolean,boolean) 18 14 0
io.github.prolobjectlink.prolog.jlog.JLogLogger.JLogLogger(Level) 18 4 0
io.github.prolobjectlink.prolog.jlog.JLogQuery.nSolutions(int) 17 7 0
io.github.prolobjectlink.prolog.jlog.JLogTerm.equals(Object) 17 14 0
io.github.prolobjectlink.prolog.jlog.JLogEngine.getPredicates() 16 4 0
io.github.prolobjectlink.prolog.jlog.JLogClause.equals(Object) 15 12 0
io.github.prolobjectlink.prolog.jlog.JLogClauses.equals(Object) 15 12 0
io.github.prolobjectlink.prolog.jlog.JLogEngine.equals(Object) 15 13 0
io.github.prolobjectlink.prolog.jlog.JLogMap.equals(Object) 15 12 0

Averages.

Program NCSS NCSS average CCN average Javadocs average
2,549.00 5.40 2.60 0.01

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 declaration package java.lang;
Import declaration import java.awt.*;
Class declaration
  • public class Foo {
  • public class Foo extends Bla {
Interface declaration public interface Able ; {
Field declaration
  • int a;
  • int a, b, c = 5, d = 6;
Method declaration
  • public void cry();
  • public void gib() throws DeadException {
Constructor declaration public Foo() {
Constructor invocation
  • this();
  • super();
Statement declaration
  • i = 0;
  • if (ok)
  • if (exit) {
  • if (3 == 4);
  • if (4 == 4) { ;
  • } else {
Label declaration fine :

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).