Validating an integer in java
I’ve played with Classmate and it does not seem to retain the information in its data even though it solves that problem internally to find the right type.
We might need to contribute to expose that somehow.
Validates only numbers and characters, but I believe that if you want to validate special characters, all you gotta do is to put those into the compile method, from Pattern.
About the e-mail validation, I believe that the best way to validate it is using regular expressions.
So you will have two actions: one to display the form and another one to handle the POST.
Of course the validation will occur in the second action and if some error occurs you will have to redirect to the first action.
Some fine the separation of single and plural an overhead. For a given container value type tuple, the extractor used is the one targeting the most specific container type that is a supertype of the container.
While Bean Validation design is very sensitive to performance waste in the hot spots, let’s re-discuss that point once we have a RI prototype and can do some tests. Rules used are the same used by the constraint validator selection. The first one clearly only applies to the elements of the collection.
If you do not already understand Spring MVC basics, follow some of my other Spring tutorials first. To get started, we first need a couple JARs in our classpath.
This tutorial with full source code will show how to validate a form submission in Spring MVC using JSR-303 annotations.