Thanks for the reply.As suggested by you,I looked into the EL specifications and it says
If value-a is a List or array:
� Coerce value-b to int (using coercion rules)
� If coercion couldn't be performed: error
� Then, if value-a.get(value-b) or Array.get(value-a, value-b) throws ArrayIndexOutOfBoundsException
or IndexOutOfBoundsException: return null
� Otherwise, if value-a.get(value-b) or Array.get(value-a, value-b) throws other
From above ,my perception is I should able to print NULL,but it is showing a blank page. Pls let me know your thought.