Difference between hashmap and hashtable?
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In howmany ways a thread can be created?
Define aop(assepct oriented programing)?
What is TL and its use?
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
which of the following authentication is stronger than the others? a. Http Basic b. Http DIGEST c. Form based
What is the difference between the font and fontmetrics classes?
What is the purpose of the wait() method?
How would you create a button with rounded edges?
Difference Between getRequest and PostRequest?
what is JTA ?
What is Servlet Filter And What does it work?
Name the method to find, if a thread is active or not?