Dependency Injection: Field injection and Setter Injection.

[Rahul Ba]

I am new to the EJB3. Can anybody tell me what is the difference between field Injection and Setter Injection. I got the Field Injectionn but not the Setter Injection. What is the use of the settert Injection and why we need that?

[Faraz Ali]

Hi,

There is field-based persistence and property-based persistence. In feild-based persistence, annotations are applied directly on instance variable, while in property-based persistence, annotations are applied on getter methods.

I think its all upon your personal taste. Field-based persistence is easier to use but property-based persistence allows data hiding. So its upto you.