Annotations are very helpful tool while programming in Java. It is a alternative to the traditional XML based configurations. Spring has picked it up early and I must admit quite beautifully.
In case you are working on something and want to use annotations for your code, here is a small guide; it will definatly make your code look clean and also will kick off the trouble of reading XMLs.
For simplicity, lets create a mock of reading column name and its value, similar to JPA.