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.

PackageClassesMethodsNCSSJavadocsJavadoc linesSingle lines commentMulti lines comment
org.fosstrak.hal.impl.impinj1499463425115325
org.fosstrak.hal.impl.impinj.comm6464775033782128
Classes totalMethods totalNCSS totalJavadocsJavadoc linesSingle lines commentMulti lines comment
795142384588235153

Methods

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

TOP 30 Methods containing the most NCSS.

MethodsNCSSCCNJavadocs
org.fosstrak.hal.impl.impinj.ImpinjTCPIPController.AsynchronousIdentify.run()117281
org.fosstrak.hal.impl.impinj.ImpinjTCPIPController.getInventory()68191
org.fosstrak.hal.impl.impinj.ImpinjTCPIPController.haltEPC(byte[])57151
org.fosstrak.hal.impl.impinj.ImpinjTCPIPController.writeBytes(String,String,int,int,UnsignedByteArray,String[])53211
org.fosstrak.hal.impl.impinj.ImpinjTCPIPController.getParameter(String)47141
org.fosstrak.hal.impl.impinj.ImpinjTCPIPController.setParameter(String,String)43201
org.fosstrak.hal.impl.impinj.ImpinjTCPIPController.haltNextTag()41131
org.fosstrak.hal.impl.impinj.ImpinjTCPIPController.writeId(String,String,String[])40161
org.fosstrak.hal.impl.impinj.comm.TCPIPProtocol.receiveFrameBytes()39161
org.fosstrak.hal.impl.impinj.ImpinjTCPIPController.readBytes(String,String,int,int,int,String[])39161
org.fosstrak.hal.impl.impinj.ImpinjTCPIPController.initialize()38101
org.fosstrak.hal.impl.impinj.comm.Frame.Frame(byte[])37160
org.fosstrak.hal.impl.impinj.ImpinjTCPIPController.identify(String[])3751
org.fosstrak.hal.impl.impinj.comm.FrameParameters.FrameParameters(byte[],FrameParametersSpec)3561
org.fosstrak.hal.impl.impinj.ImpinjTCPIPController.writeMemoryBlocks(byte[],int,int,byte[],byte[])32100
org.fosstrak.hal.impl.impinj.comm.TCPIPProtocol.handleUnusedFrame(byte[])31111
org.fosstrak.hal.impl.impinj.ImpinjTCPIPController.reset()28111
org.fosstrak.hal.impl.impinj.ImpinjTCPIPController.readMemoryBlocks(byte[],int,int,int,byte[])2770
org.fosstrak.hal.impl.impinj.comm.TCPIPProtocol.sendRequestBytes(byte[])25101
org.fosstrak.hal.impl.impinj.comm.Frame.getFrame()2341
org.fosstrak.hal.impl.impinj.ImpinjTCPIPController.kill(String,String,String[])23110
org.fosstrak.hal.impl.impinj.comm.TCPIPProtocol.receiveNotification(Category,int)22111
org.fosstrak.hal.impl.impinj.ImpinjTCPIPController.selectAntennaConnectors(int)1581
org.fosstrak.hal.impl.impinj.ImpinjTCPIPController.stopModem()1531
org.fosstrak.hal.impl.impinj.ImpinjTCPIPController.AsynchronousIdentify.startInventory()1561
org.fosstrak.hal.impl.impinj.ImpinjTCPIPController.getAllParameterNames()1461
org.fosstrak.hal.impl.impinj.ImpinjTCPIPController.initReader(String,int)1461
org.fosstrak.hal.impl.impinj.ImpinjTCPIPController.startAsynchronousIdentify(String[],Trigger)1450
org.fosstrak.hal.impl.impinj.comm.Frame.getTimestampField()1321
org.fosstrak.hal.impl.impinj.comm.Frame.getHeaderField()1231

Averages.

Program NCSSNCSS averageCCN averageJavadocs average
1,423.0012.394.430.73

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).