Java J2EE Question and Answers

17. What is message?
 
  • In the Java Message Service, an asynchronous request, report, or event that is created, sent and consumed by an enterprise application and not by a human.
  • It contains vital information needed to coordinate enterprise applications, in the form of precisely formatted data that describes specific business actions.
 
Your Name Your Email-ID
Your Answer
18. What is web service?
 
  • An application that exists in a distributed environment, such as the Internet.
  • A web service accepts a request, performs its function based on the request, and returns a response.
  • The request and the response can be part of the same operation, or they can occur separately, in which case the consumer does not need to wait for a response.
  • Both the request and the response usually take the form of XML, a portable data interchange format, and are delivered over a wire protocol, such as HTTP.
 
Your Name Your Email-ID
Your Answer
19. What is backing bean?
 
  • A Java Beans component that corresponds to a JSP page that includes Java Server Faces components.
  • The backing bean defines properties for the components on the page and methods that perform processing for the component.
  • This processing includes event handling, validation and processing associated with navigation.
 
Your Name Your Email-ID
Your Answer
20. What is Web module?
  A deployable unit that consists of one or more Web components, other resources and a Web application deployment descriptor contained in a hierarchy of directories and files in a standard Web application format.
 
Your Name Your Email-ID
Your Answer
12345678910 Page 5 of 10