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java Programming Glossary: singletonshttp://stackoverflow.com/questions/11126866/thread-safe-multitons-in-java controversy of double checked locking An effective way for singletons is mentioned here but that doesn't seem to extend to multitons...
Why is Singleton considered an anti pattern in Java world sometimes? http://stackoverflow.com/questions/11292109/why-is-singleton-considered-an-anti-pattern-in-java-world-sometimes share improve this question Testing One reason is that singletons aren't easy to handle with unit tests. You can't control the.. control the lifecycle of their objects and often create singletons but these objects are injected into their dependent objects.. Thus the codebase itself doesn't treat the objects as singletons. e.g. rather than this for example public class Portfolio private..
Spring MVC : How to perform validation ? http://stackoverflow.com/questions/12146298/spring-mvc-how-to-perform-validation in your controller very useful because most validators are singletons unit test mocking becomes easier your validator could call other..
What's Alternative to Singleton http://stackoverflow.com/questions/1300655/whats-alternative-to-singleton this can help you Using dependency injection to avoid singletons Singletons are Pathological Liars Root Cause of Singletons Where.. of new objects into a factory so you can avoid using singletons. Worth reading for sure. In short we move all of the new operators..
Implementing the singleton pattern in Java http://stackoverflow.com/questions/2008912/implementing-the-singleton-pattern-in-java If you're asking for scenarios when you need to implement singletons it's because the need for them didn't really express. You're.. didn't really express. You're better off not introducing singletons in your code base just because it feels cool to follow design.. Dependency Injection . Now if you really want to implement singletons in Java I would recommend Joshua Bloch's Effective Java way..
Execute method on startup in spring http://stackoverflow.com/questions/2401489/execute-method-on-startup-in-spring then yes there are many ways to do this the easiest for singletons beans anyway being to annotate your method with @PostConstruct..
http://stackoverflow.com/questions/2912281/thread-safety-in-singleton recommends using a single element enum type to implement singletons see Effective Java 2nd Edition Item 3 Enforce the singleton..
When to use a Constructor and when to use getInstance() method (static factory methods)? http://stackoverflow.com/questions/3169372/when-to-use-a-constructor-and-when-to-use-getinstance-method-static-factory-m share improve this question Everybody seems to focus on singletons while I think that the question is actually about constructor..
Howto unescape a Java string literal in Java http://stackoverflow.com/questions/3537706/howto-unescape-a-java-string-literal-in-java items are also additions to Java regex escapes Standard singletons a e f n r t NB b is unsupported as backspace so it can pass..
Singletons vs. Application Context in Android? http://stackoverflow.com/questions/3826905/singletons-vs-application-context-in-android Recalling this post enumerating several problems of using singletons and having seen several examples of Android applications using.. framework engineer thanks. We are bit by bit removing all singletons from our project in favor of lightweight task scoped objects.. Visibility has been mentioned as another problem and since singletons imply global random access to shared state subtle bugs may arise..
Static references are cleared--does Android unload classes at runtime if unused? http://stackoverflow.com/questions/5105097/static-references-are-cleared-does-android-unload-classes-at-runtime-if-unused shouldn't happen otherwise this common way of implementing singletons wouldn't work on any JVM right Any idea why this is happening..
How do you make a deep copy of an object in Java? http://stackoverflow.com/questions/64036/how-do-you-make-a-deep-copy-of-an-object-in-java such that new instances are not created e.g. for singletons. Also this of course doesn't work if your classes aren't Serializable...
What's Alternative to Singleton http://stackoverflow.com/questions/1300655/whats-alternative-to-singleton help you Using dependency injection to avoid singletons Singletons are Pathological Liars Root Cause of Singletons Where have all.. singletons Singletons are Pathological Liars Root Cause of Singletons Where have all the Singletons Gone The last article explains.. Liars Root Cause of Singletons Where have all the Singletons Gone The last article explains in detail how to move the creation..
Implementing the singleton pattern in Java http://stackoverflow.com/questions/2008912/implementing-the-singleton-pattern-in-java follow design patterns. Clean Code Talks Global State and Singletons Once Is Not Enough Performant Singletons However what's really.. Global State and Singletons Once Is Not Enough Performant Singletons However what's really worth knowing is Dependency Injection..
How are singletons handled in a web application? http://stackoverflow.com/questions/2391191/how-are-singletons-handled-in-a-web-application Two very common requirements leading to the use of Singletons are dependency injection c.q. using a factory and in memory.. The name 'ehcache' is a palindrome In general use of Singletons is 'frowned upon' and seen as an anti pattern. On the other.. same time use Spring or Ehcache or the like. The fear of Singletons in my opinion stems from the many poor implementations that..
http://stackoverflow.com/questions/2912281/thread-safety-in-singleton in Java is broken so what are the best ways to make Singletons Thread Safe in Java The first thing that springs to my mind..
http://stackoverflow.com/questions/3499467/good-case-for-singletons case for Singletons I have an application that has several classes used for storing.. I never instantiate them. Someone suggested I make them Singletons What's the case for against java static singleton share improve.. share improve this question Effective Java says Singletons typically represent some system component that is intrinsically..
Singletons vs. Application Context in Android? http://stackoverflow.com/questions/3826905/singletons-vs-application-context-in-android vs. Application Context in Android Recalling this post enumerating.. singleton pattern I wonder if it's a good idea to use Singletons instead of single instances shared through global application.. can easiliy be re created when you actually need them. Singletons are a nightmare for testing and if lazily initialized will introduce..
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