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.

Package Classes Methods NCSS Javadocs Javadoc lines Single lines comment Multi lines comment
gnu.hylafax.util 8 17 797 17 195 399 6
gnu.hylafax.job 10 41 157 28 137 250 13
Classes total Methods total NCSS total Javadocs Javadoc lines Single lines comment Multi lines comment
18 58 954 45 332 649 19

Objects

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

TOP 30 classes containing the most NCSS.

Object NCSS Methods Classes Javadocs
gnu.hylafax.util.SendFax2 170 2 0 2
gnu.hylafax.util.SendFax 132 2 0 2
gnu.hylafax.util.Notifier 129 4 0 3
gnu.hylafax.util.HylaFAXClientTest 99 2 0 3
gnu.hylafax.util.MailListener 56 3 0 3
gnu.hylafax.util.FaxStat 53 1 0 1
gnu.hylafax.job.SendEvent 41 9 0 2
gnu.hylafax.util.SampleListener 41 2 0 3
gnu.hylafax.job.ReceiveEvent 26 10 0 1
gnu.hylafax.job.BasicReceiveNotifier 22 4 0 4
gnu.hylafax.job.BasicSendNotifier 22 4 0 4
gnu.hylafax.util.JobTest 16 1 0 0
gnu.hylafax.job.SendAndReceiveNotifier 11 4 0 4
gnu.hylafax.job.Event 6 2 0 1
gnu.hylafax.job.ReceiveNotifier 4 3 0 4
gnu.hylafax.job.SendNotifier 4 3 0 4
gnu.hylafax.job.SendListener 2 1 0 2
gnu.hylafax.job.ReceiveListener 2 1 0 2

TOP 30 classes containing the most methods.

Object NCSS Methods Classes Javadocs
gnu.hylafax.job.ReceiveEvent 26 10 0 1
gnu.hylafax.job.SendEvent 41 9 0 2
gnu.hylafax.job.BasicReceiveNotifier 22 4 0 4
gnu.hylafax.job.SendAndReceiveNotifier 11 4 0 4
gnu.hylafax.job.BasicSendNotifier 22 4 0 4
gnu.hylafax.util.Notifier 129 4 0 3
gnu.hylafax.job.ReceiveNotifier 4 3 0 4
gnu.hylafax.job.SendNotifier 4 3 0 4
gnu.hylafax.util.MailListener 56 3 0 3
gnu.hylafax.job.Event 6 2 0 1
gnu.hylafax.util.SendFax 132 2 0 2
gnu.hylafax.util.HylaFAXClientTest 99 2 0 3
gnu.hylafax.util.SampleListener 41 2 0 3
gnu.hylafax.util.SendFax2 170 2 0 2
gnu.hylafax.job.SendListener 2 1 0 2
gnu.hylafax.job.ReceiveListener 2 1 0 2
gnu.hylafax.util.JobTest 16 1 0 0
gnu.hylafax.util.FaxStat 53 1 0 1

Averages.

NCSS average Program NCSS Classes average Methods average Javadocs average
46.44 954.00 0.00 3.22 2.50

Methods

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

TOP 30 Methods containing the most NCSS.

Methods NCSS CCN Javadocs
gnu.hylafax.util.SendFax2.main(String[]) 164 28 0
gnu.hylafax.util.SendFax.main(String[]) 127 28 0
gnu.hylafax.util.HylaFAXClientTest.main(String[]) 96 15 1
gnu.hylafax.util.Notifier.main(String[]) 69 19 1
gnu.hylafax.util.FaxStat.main(String[]) 52 7 0
gnu.hylafax.util.MailListener.onReceiveEvent(ReceiveEvent) 45 10 1
gnu.hylafax.util.Notifier.notifySendListeners(Class,long,String,String,String,String) 29 12 0
gnu.hylafax.util.Notifier.notifyReceiveListeners(Class,String,String,String,String,String,String) 24 8 0
gnu.hylafax.util.SampleListener.onReceiveEvent(ReceiveEvent) 16 2 1
gnu.hylafax.util.SampleListener.onSendEvent(SendEvent) 15 2 1
gnu.hylafax.util.JobTest.main(String[]) 14 4 0
gnu.hylafax.job.BasicReceiveNotifier.notifyReceiveListeners(ReceiveEvent) 8 4 1
gnu.hylafax.job.BasicSendNotifier.notifySendListeners(SendEvent) 8 4 1
gnu.hylafax.job.SendEvent.setElapsedTime(String) 7 3 1
gnu.hylafax.job.BasicReceiveNotifier.addReceiveListener(ReceiveListener) 5 3 1
gnu.hylafax.job.BasicReceiveNotifier.removeReceiveListener(ReceiveListener) 5 3 1
gnu.hylafax.job.BasicSendNotifier.addSendListener(SendListener) 5 3 1
gnu.hylafax.job.BasicSendNotifier.removeSendListener(SendListener) 5 3 1
gnu.hylafax.job.SendAndReceiveNotifier.SendAndReceiveNotifier() 3 1 0
gnu.hylafax.util.Notifier.usage(PrintStream) 3 1 1
gnu.hylafax.util.SendFax.usage(PrintStream) 3 1 1
gnu.hylafax.util.MailListener.onSendEvent(SendEvent) 3 2 1
gnu.hylafax.job.Event.getFilename() 2 1 0
gnu.hylafax.job.Event.setFilename(String) 2 1 0
gnu.hylafax.job.ReceiveEvent.getModem() 2 1 0
gnu.hylafax.job.ReceiveEvent.setModem(String) 2 1 0
gnu.hylafax.job.ReceiveEvent.setMessage(String) 2 1 0
gnu.hylafax.job.ReceiveEvent.getMessage() 2 1 0
gnu.hylafax.job.ReceiveEvent.setCidNumber(String) 2 1 0
gnu.hylafax.job.ReceiveEvent.getCidNumber() 2 1 0

Averages.

Program NCSS NCSS average CCN average Javadocs average
954.00 13.26 3.43 0.48

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).