@Injectable annotation

Action

This annotation marks a type, field or method as injectable. It is only necessary to use this annotation in two circumstances:

At class level, to make all properties injectable at once
At field or method level, when you don't want to place any other, more-specific annotation

Javadoc Ref : @Injectable

@Injectable
public class Customer {
private String customer;
private Calendar birthdate;
private int discount;
}