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Merge pull request #31 from mbirkenkamp/patch-1

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Update App.java
This commit is contained in:
Ilkka Seppälä 2015-03-14 21:07:18 +02:00
commit c7e500fde2
1 changed files with 8 additions and 2 deletions
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singleton/src/main/java/com/iluwatar/App.java
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@ -3,10 +3,16 @@ package com.iluwatar;
/** /**
* *
* Singleton pattern ensures that the class (IvoryTower) can have only one * Singleton pattern ensures that the class (IvoryTower) can have only one
* existing instance and provides global access to that instance. * existing instance per java classloader instance and provides global access to it.
* *
* http://stackoverflow.com/questions/70689/what-is-an-efficient-way-to-implement-a-singleton-pattern-in-java * http://stackoverflow.com/questions/70689/what-is-an-efficient-way-to-implement-a-singleton-pattern-in-java
* *
* The risk of this pattern is that bugs resulting from setting a singleton up in a distributed environment can
* be tricky to debug, since it will work fine if you debug with a single classloader. Additionally, these
* problems can crop up a while after the implementation of a singleton, since they may start out synchronous and
* only become async with time, so you it may not be clear why you are seeing certain changes in behaviour.
*
* http://stackoverflow.com/questions/17721263/singleton-across-jvm-or-application-instance-or-tomcat-instance
*/ */
public class App { public class App {