This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
I wanted to know what is the best way to validate a jsp form at client side, like checking if any mandatory field is left empty or having invalid data.
For example i have an input type=file and on hitting the submit button i want to validate the file input field is left empty. Then should i use any inbuilt function(if available in jsp) or use scriptlet?
Please teach me how can i use scriptlets for this purpose, like the necessary library files and the class needed to be imported.