Implement an business interface in a bean

Question

Is it true that when specifing a number of business interfaces for a bean class with an annotation (@Remote) it not require that the bean class implement the interfaces ??
it sounds weird to me..
if it is possible , then where is the implementation of the interfaces?
thanks in advanced.

Answer 1

If your bean doesn't implement the business interface, you'll need to use annotations (@Remote on the session bean class) or the deployment descriptor to let the container know what the business interfaces are used by the session bean.
For example,
// BusinessIF1.java
package myejbs;
public interface BusinessIF1 { public void doSomething(); }
// BusinessIF2.java
package myejbs;
public interface BusinessIF2 { public void doSomethingElse{}; }
// MySessionBean.java
package myejbs;
@Remote({BusinessIF1.class, BusinessIF2.class})
@Stateless
public class MySessionBean {
public void doSomething();
public void doSomethingElse();
}This isn't recommended, though. You'll lose a compile-time check to make sure that all of your business methods are implemented. You can catch this if you use Sun's verifier tool, though.