Validating date in java

We’ll feature more features of JSR 380 and Hibernate Validator in upcoming articles.

Validating user input is, of course, a super common requirement in most applications, and the Java Bean Validation framework has become the de-facto standard for handling this kind of logic.JSR 380 is a specification of the Java API for bean validation, part of Java EE and Java SE, which ensures that the properties of a bean meet specific criteria, using annotations such as .That is, say we have a date field that user can fill-out using the locale-specific pattern, but I want to display a format hint in the localized form. The ICU I mentioned earlier in this post, partially works.That's because, the data that ICU uses come from CLDR, which is unfortunately partially translated/partially correct.To parse these expressions, we must add a dependency on both the expression language API and an implementation of that API. Some frameworks – such as Spring – have simple ways of triggering the validation process by just using annotations.

Glass Fish provides the reference implementation: import javax.validation.constraints. This is mainly so that we don’t have to interact with the programmatic validation API.In case of my mother's tongue, at the time of writing, neither patterns, nor their localized forms are correctly translated.And every time I correct them, I got outvoted by other people, who do not necessary live in Poland, nor speak Polish language...Internationalization in Java or Java i18n is a very important feature.Java provides internationalization (i18n) support through resource bundles.You can also provide option to user to chose the locale and update the labels dynamically.