Mak Smash

I'm very new in java bean world and I want to clarify some of the points regarding beans, so please help me...

why we use beans? What is Enterprise, Session and Application beans?

I'm confused because some people say beans are only used for storing the data into database and some say it is used for business logic.
What is the actual purpose of beans in java?

Thank you,

Can anyone tell me best tutorial for self learning EJB?

Please help me...

Is this right to say < jsp:forward > runs on server side and HttpServletResponse.sendRedirect() runs on client side?

What is the key difference between using a < jsp:forward > and HttpServletResponse.sendRedirect()

I want Oxford like dictionary. I had this question in my exam.

Is anyone have program for making dictionary using standard(core) java???


Please reply!!!

I'm sorry for late replying but ya we use throw new to raise runtime exception. we can throw a chacked exception using throw new at runtime

what is assembly in C#

What is difference between RequestDispatcher() and sendRedirect()??

Hi,

"throws" is used for checked exception, this exception is specified at method declaration. Caller of this method must handle the exception or must throw it to its caller. If checked exception is not handled or not passed to the caller compiler will not compile the source code.
"throw new ExcetionName" is run time exception. User can throw exception explicitly using "throw new" key word.

When exception is thrown we can handle them by using try... catch...

Hi,

If you implement an interface B and that interface extends to another interface C that time you must have to implement method of both the interface otherwise compiler wont allow...

If you dont know what methods interface C has... you can find using javap -p InterfaceName... This will show you all the methods inside that interface...

Hi Jesper de Jong,

Dear friend earlier my topic was on difference between Abstract class and Interface, now i'm asking for similarity between the same.

Thank you,

What is similarity between Abstract class and Interface???

Hi,
I visited that link, there is mentioned "use an interface if you're sure the API is stable for the long run" can you please tell me, whats the harm if we add method in interface?

Thank you,

Can anyone tell me difference between Abstract class and Interface??

Thank you,