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JEE 6 implements Event Delagation model and Observer (Publish-Subscribe) pattern out of the box much more elegantly than other api. A Publisher fires events along with a type that needs to be passed. An Observer (can have multiple observers) simply observes for the Event “type” and receives the object sent by the publisher along with [...]

Let’s look at an Interceptor first. Interceptor definition: AuditTime — wraps a simple debug around a method invocation with time stamps. import static java.lang.annotation.ElementType.*; import static java.lang.annotation.RetentionPolicy.*; import java.lang.annotation.*; import javax.interceptor.*; @Inherited @InterceptorBinding @Target({TYPE, METHOD}) @Retention(RUNTIME) public @interface AuditTime { } Interceptor implementation. import javax.inject.*; import javax.interceptor.*; import org.jboss.logging.*; @AuditTime @Interceptor public class AuditTimeInterceptor implements [...]

JEE6 provides a specification for Webservices (SOAP AND REST) and JAX-RS is the default Reference implementation. A lot of cookie-cutter code is eliminated for implementing webservices. Unlike Restlet which doesn’t provide much functionality for integrating restful webservices into a web application (exception mapping and custom annotations to process http params, or DI), JEE6 webservices combine [...]