![]() ![]() Generally, It is said that whenever you don’t know, at compile time, the type that should be instantiated or the method that should invoked, you will need reflection. #Java reflection example program codeYou can accomplish any task, fulfill any requirement without reflection when you know the classes you are going to use.īut as soon as, you are told to deal with classes which you don’t know at time of writing the code, and you must write code in too general way such that it can handle any class type then you will need reflection to do the job.įor example, you are told to write a code analyzer which is able to look inside any class and list down it’s all private method then you can do this only by reflection. ![]() In practical, if you know the classes you are dealing with in your application, you may never ever come across a situation where you will need reflection. Java is strongly typed language with all the “good” features of OOPs. Having said that in one sentence, let me elaborate it further. #Java reflection example program professionalMore than a few professional programmers would answer “ as rarely as possible, maybe even never.” Example uses of reflection for impatients Code analyzer tools Eclipse auto completion of method names Marshalling and unmarshalling Spring Framework for creating the beans Parsing annotations by ORMs like hibernate entity Junit Testcases When somebody would need Reflection? real life practical examples of reflection in java. I promised to come up with my leanings/thoughts on this specific topic, and so here in this post, I will discuss the same i.e. This immediately back-fired me with lots of requests to come up with some real life “good” examples of reflection, and possible scenarios where a developer will be needing it. In my previous tutorial, I discussed basics of annotation in which I discussed the usage of reflection to read the applied annotations on a class or a method. ![]() Reflection is one of those things like multi-threading where everyone with experience of it says “Don’t use it unless you absolutely have to”.Ībove quote is absolutely true for all for us alike. ![]()
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