<dependency>
<groupId>org.hibernate.validator</groupId>
<artifactId>hibernate-validator</artifactId>
<version>6.0.1.Final</version>
</dependency>
import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.ValidatorFactory;
import java.util.Set;
public class User {
@NotNull
private String name;
@Email
private String email;
// getters and setters
}
public class Main {
public static void main(String[] args) {
ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
Validator validator = factory.getValidator();
User user = new User();
user.setName("John Doe");
user.setEmail("johndoe@example.com");
Set<ConstraintViolation<User>> violations = validator.validate(user);
if (violations.isEmpty()) {
} else {
for (ConstraintViolation<User> violation : violations) {
System.out.println(violation.getPropertyPath() + ": " + violation.getMessage());
}
}
}
}
