can it possible to validate form field before execution of a
servlet service method if yes how??
- 6 Answers
- 8402 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Yes,
If it client side validation do with the javascript
if it is serverside validation we can use Filters and do
the validations there example login authenticated or not
| Is This Answer Correct ? | 8 Yes | 1 No |
Answer / suresh
We can do it, There are two validation is available
1. Form validation
2. Server side validation
1. Form Validation - This validation is perform client side,
java script used to achieve these form validation
2. Server side Validation - This type we can use predefined
server side validation method used to achieve these validate.
Note:- In perform wise we compare Form validation is better
than server side validation. it's easy to progress.
| Is This Answer Correct ? | 5 Yes | 0 No |
Answer / geetha
yes, it is possible. write a javascript method to validate
input fields and call this method based on event of your
requirement.
| Is This Answer Correct ? | 5 Yes | 1 No |
Answer / alluri.nagaraju
By using Filters u can also validating the form feilds
| Is This Answer Correct ? | 4 Yes | 1 No |
Answer / m saravanakumar
If you want to intercept a request before servicing you
should use Filter concept in servlet which will help in
lots of ways. like the following...
1) Using the Filter we can logs the IPAddress of client
machine in log file.
2) can do the form validation like trim() functions.
| Is This Answer Correct ? | 3 Yes | 0 No |
Can we write a constructor for a Servlet class ? if yes how ? if no why not ?
What is the need of session tracking in HttpServlet ?
A client sends requests to two different web components. Both of the components access the session. Will they end up using the same session object or different session ?
What compiler do not do if we create our own constructor?
Are Servlets Thread Safe? How to achieve thread safety in servlets?
What is the directory structure of a war file?
Why is http protocol called as a stateless protocol?
How native code can be used in a servlet?
What are its drawbacks of cgi?
How will you open a new page after certain interval of time (5 sec), on clicking of a button in an html page?
What is the capacity that doGet method can send to the server?
What are the methods in HttpSession and their use?
Core Java 
