Sriram
Posts: 4
Nickname: planswerme
Registered: Apr, 2003
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Re: Can u answer these
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Posted: Apr 16, 2003 5:36 AM
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> Recently I had been to a interview some questions are :
> Can u any one answer these?
>
> a. Which is true?
> 1 An inner class cannot extend Super Class
> 2 An inner class cannot implement interface
> 3 An inner Class can extend a Super Class and interface
> 4 An ic can implement SC and interface
>
> b. When invoking loadClass() of a class , if parent Class
> loader of class under consideration returns null then
> a) Class not found exception
> b) Null pointer exception
> c)class loading in builtin JVM is used
> d) Nothing happens, pgm continues
>
> c. Version setting of cookie is by:
> cookieobj.setVersion(Cookie c , int v);
> responseobj.setCookie(Cookie c , int v);
> responseobj.addCookie(Cookie c , int v);
> none
>
> d. Transaction is rolledback if system Exception is
> thrown :
> True/false.
>
> e. Transaction is rolledback if application Exception is
> thrown : True/false.
>
>
> f. Native modifier: can be applied
> to class,
> to method,
> class variable,
> instance variable which is valid?
>
> g. What is meant by native modifier?
>
> h. Which is transaction attribute for MsgDrivenBean?
> NotSupported,REquired, Mandatory
>
> i. Public class TestServlet extend HttpServlet implements
> SingleThreadedModel
> {
> private static int num=5;
> public doGet(HttpServletRequest req, HttpServletRes res)
> {}
> }
> Which is thread safe?
> num and req,
> num and req both not,
> num alone, req alone.
> all
>
> j. Which is slowest access to an elt in middle of alist
> by means of index?
> Array, Vector,ArrayList, LinkedList, All, none.
>
> k. Write a Java program in which a Thread A reads from a
> file F1 and thread B
> writes the contents into the File F2.
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