This is my scenario :

I have to do API versioning. I am using REST APIs with Restlet framework. I am confused how to implement the versioning in Java Source code.

If my API looks like this : http://localhost:8080/example.com/v2/hello Then In my source code how to map the version with appropriate functionality?

For example :

If(version == 1) {//Do Version 1 Source Code} else If(version == 2) {//Do Version 2 Source Code} else If(version == 3) {//Do Version 3 Source Code} ………..

If I did like this, Then why we are going for Versioning. We can implement Manually Right? And also If I have to add some 100 versions, then the code looks uglier and it becomes lengthier. I get confused how to map in Source Code. Please Clarify my doubt.

I have read that we can use annotations for handling API versioning. But I don't know what are the annotations available in restlet framework. Please let me know.

Regards, Geetha.