how the end user will know the error

[l suresh]

in servlets or jsp the the end user will know the error

[Bear Bibeault]

If you want people to take the time to answer your questions, you should put some time in asking questions that are complete sentences and that clearly state what information you are seeking.

I really have no idea what you are after.

Please see the link to 'Asking Smart Questions' below.

[sushma sree]

As long as you dont catch any of the exceptions, the stack trace would be printed on the JSP. You might consider some Validation frameworks which can show meaningful errors instead of ugly stack trace