#Credit card validator java project code

The script can also be disabled by using storms. By disabling the script, the client can give the wrong data. Pros:- If we place only client-side form validation logic (JavaScript) then it reduces the network round trips between client and server because the form validation takes place on the client-side itself without going to the server.Ĭons:- There is a possibility of disabling script execution using browser settings.

If we place only server-side form validation logic, then the network round trips between the client(browser) and the server will be increased if the form page is rejected by the server multiple times.Īpproach2:- Placing form validation logic only in client side. Always resides and executes in the server by becoming part of servlet component code.ĭifferent Approach to Place Form Validation LogicĪpproach1:- Placing form validation logic only in server side. Executes in browser by coming browser along with form page.

#Credit card validator java project code

Place Java code as form validation logic. Whether age is entered as a number or not, and it is in the range of 1 to 150? Checking whether the person is eligible to vote or not based on the given age.įorm validation logic in web application Client Side Server Side Place JavaScript code as form validation logic. Example:- Form Validation Examples Business Logic Examples Credit card number is having 16 digits or not? (format verification) Credit card number is existing or a valid number? The given date value is in MM/DD/YYYY pattern or not? (Pattern verification) Getting sales report for given data value.

Whereas business logic/request processing logic takes form data as inputs and uses them to process the request and generate the results. Example:- Checking required fields of the form are filled or not, checking whether age types as a numeric value and e.t.c.ĭifference between form validation logic and business logic? In form validation logic, the pattern and format of the form data will be verified. Form Validation in Java Servlet | Verifying the pattern and format of form data before it is getting used in the business logic as inputs are called form validations, otherwise business logic may give invalid results or exceptions by taking the inputs.