Nenad Bulatovic

Please consider this modification to your example: ``` package com.in28minutes.patterns; public class StatePattern { static class FanWallControl { private SpeedLevel current; public FanWallControl() { current = new Off(); } public...

This: log4j log4j 1.2.17 Should be changed to this: 1.2.16 Otherwise there will be error: Description Resource Path Location Type Failed to read artifact descriptor for log4j:log4j:jar:1.2.17 org.eclipse.aether.resolution.ArtifactDescriptorException: Failed to...

``` log4j:ERROR Could not find value for key log4j.appender.Appender2 log4j:ERROR Could not instantiate appender named "Appender2". ``` is caused by: https://github.com/in28minutes/SpringMvcStepByStep/blob/master/Step14.md `log4j.rootLogger=TRACE, Appender1, Appender2` Appender2 is not defined.