Latest Answer: The major differences i have seen between EJB 2.x and EJB 3.0 versions are as follows :- 1). Removal of home interface enabled simple lookup process in ejb 3.0 2). EJB deployment descriptors are not required in ejb3.0 3). Annotations are used in ejb3.0 ...
What is the difference between ejb2.0 and ejb3.0 and i reviewed in net that ejb 3.0 using POJO(plain old java objects) what is pojoi want the reply for this
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Latest Answer: Stateful sessions beans maintain their state within the EJB layer itself.It is taken care of by the container,whereas the Web Layer maintains its state using cookies or HttpSession object. ...
Latest Answer: Hi, A message-driven bean is an enterprise bean that allows J2EE applications to process messages asynchronouslyAdvantages-----------------A single message Driven bean can process messages from multiple clientsThey are invoked asynchronously. ...
Latest Answer: CMP WAS TOO WEAK BEFORE.NOW IN EJB2.0 IT BECOME A STRONG CONCEPT WITH CMR INCLUSION.LAZY LOADING IS AVOIDED Iie,Data are loaded only when a business method is called.But in EJB 1.1 the data is loaded before the business method call occupying the ...
we can run any number of JVM's.
Latest Answer: hi, keeping in mind the concept of env. variable, JAVA_HOME is globaly defined variable, we assigns class path to this variable, on compilation takes place, only one value can be assigned to a variable, it mean only one jvm will be running . so one ...
Latest Answer: Servlet tunneling means when one request from a servlet is passed to another servlet in order to achieve an application objective it is called servlet tunneling.Its called tunneling as the request passes through more than 1 servlets.Rgds. ...
Latest Answer: JSP vs Servlet1) Servlet is pure java codes, which is used to extend the web server by providing dynamic codes. Inorder to write those codes, we require a strong background in JAVA programming2) If our development involves, working with diffrerent team ...
Latest Answer: To add, in CMP container handles queries to database and so it is good when interacting/deploying in various database environments.While in BMP bean developer has to write SQL queries to load and store data to and from a given database table. This ...
Latest Answer: To access a servlet/jsp from EJB create a URL and call its openStream() method.URL google = new URL("http://www.google.com/"); BufferedReader in = new BufferedReader(new InputStreamReader(google.openStream())); String inputLine; while ((inputLine ...
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