The ckjm's intro from 1and1

ckjm's Introduction

The program ckjm calculates Chidamber and Kemerer object-oriented metrics byprocessing the bytecode of compiled Java files. The program calculates for each class the following six metrics proposed by Chidamber and Kemerer.

WMC: Weighted methods per class
DIT: Depth of Inheritance Tree
NOC: Number of Children
CBO: Coupling between object classes
RFC: Response for a Class
LCOM: Lack of cohesion in methods

In addition it also calculates for each class

Ca: Afferent couplings
NPM: Number of public methods

This is a fork that adds

A Maven driven build because I had some problems with the prior Ant building,
Args4j command line options for easier invocation, and
CSV output for number crunching with Excel.

Maven build:

 $ mvn clean package

Example call:

 find -iname *.class | java -jar ~/.../target/CKJM-1.10-SNAPSHOT-jar-with-dependencies.jar -i -t CSV > /tmp/project.csv

Command line options:

 -h (--help)                     : Show this help message.
 -i (--use-stdin)                : Read class file names from standard input
                                   instead of adding them in the command line
                                   arguments.
 -j (--include-jdk-classes)      : True if the measurements should include
                                   calls to the Java JDK into account.
 -k (--keep-going)               : Keep going in case of an error (i.e. class
                                   format exception).
 -p (--only-public)              : True if the reports should only include
                                   public classes.
 -t (--type) [XML | CSV | PLAIN] : Output format to use.

If you use this tool in your research, please cite it as follows. Diomidis Spinellis. Tool writing: A forgotten art? IEEE Software, 22(4):9–11, July/August 2005. (doi:10.1109/MS.2005.111).

Visit the original project's home page for more information.

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