What is source and listener?
- 1 Answers
- 4167 Views
- I also Faced
- E-Mail Answers
Answer / janet
Source: A source is an object that generates an event.this
occurs when the internal state of that object changes in
some way.
Listener: A listener is an object that is notified when an
event occurs.It has two major requirements First,it must
have been registered with one or more sources to receive
notifications about specific types of events.Second,it must
implement methods to receive and process these
notifications.
| Is This Answer Correct ? | 3 Yes | 0 No |
What is rmic?
Name the method to find, if a thread is active or not?
1) which method of the RequestDispatcher cannot be called once the output is sent to the client? a. forward b. include c. both a&b 2) which interface should an object implement to get notified of changes to the list of active sessions in a web application? a. HttpSessionListener b. HttpSessionActivationListener c. HttpSessionAttributeLIstener 3) A user can select multiple locations from a list box on an HTML form, which of the following methods can be used to retrieve all the selected location? a. getParameter() b. getParameterValues() c. getParamValues() 4) which of the following methods should be used to send character text to the client? a. ServletResponse.getWriter() b. ServletResponse.getOutputStream() c. ServletResponse.getOut() 5) which implicit object is always available in a JSP page? a. exception b. session c. out 6) which inclusion mechanism doesn't include the source of the page, rather the output of the page. a. include directive b. jsp:include action c. Bothe a& b 7) which attribute of the page controls whether a page participates in session or not? a. session-allowed b. session c. isSession
wahts is mean by dynavalidatorform in struts/
What is ioc concept?
What are the various thread priorities?
What are the different approaches to represent an inheritance hierarchy?
whats is mean by jndi
Can you give me a simple example of using the requiredif validator rule?
What does module-relative mean?
Is the session factory thread safe?
What is a task?s priority?
Core Java 
