Hi:
  I run the NewRuleCalculator.java  to learn Joran feature - interpreter to learn new rules on the fly.

  I modified line of 57 as  

   simpleConfigurator.doConfigure("src/main/java/chapters/onJoran/newRule/newRule.xml");

  first of all, newRule.xml has  typo for xml element "new-rule" , it should be "newRule"
  after correcting above error, the NewRuleCalculator.java run fine but didn't generate expected result as "The computation named [toto] resulted in the value 30"

See below output from my IDE:


cd D:\OpenSourceCodes\logback-master\logback-examples; JAVA_HOME=D:\\Java\\jdk1.7.0_15 "\"D:\\Program Files\\NetBeans 7.3\\java\\maven\\bin\\mvn.bat\"" "-Dexec.args=-classpath %classpath chapters.onJoran.newRule.NewRuleCalculator" -Dexec.executable=D:\\Java\\jdk1.7.0_15\\bin\\java.exe -Dexec.classpathScope=runtime -DskipTests=true process-classes org.codehaus.mojo:exec-maven-plugin:1.2.1:exec
Scanning for projects...
                                                                        
------------------------------------------------------------------------
Building Logback Examples Module 1.0.12-SNAPSHOT
------------------------------------------------------------------------

[build-helper:add-test-source]
Test Source directory: D:\OpenSourceCodes\logback-master\logback-examples\src\test\scala added.

[resources:resources]
[debug] execute contextualize
Using 'UTF-8' encoding to copy filtered resources.
Copying 3 resources

[compiler:compile]
Compiling 1 source file to D:\OpenSourceCodes\logback-master\logback-examples\target\classes

[exec:exec]
------------------------------------------------------------------------
BUILD SUCCESS
------------------------------------------------------------------------
Total time: 1.532s
Finished at: Sun Mar 31 16:53:19 PDT 2013
Final Memory: 9M/24M
------------------------------------------------------------------------


Source code : downloading logback-master.zip from https://github.com/qos-ch/logback
IDE: NetBeans 7.3
JDK version:  32  bit window version Oracle JDK 1.7.0_15
Platform: window xp

Ming Qin

Cell Phone Number: 949-388-9898