public class User {
private String username;
private String email;
// Getters and setters
}
public class Main {
public static void main(String[] args) {
User user = new User();
ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
Validator validator = factory.getValidator();
Set<ConstraintViolation<User>> violations = validator.validate(user);
for (ConstraintViolation<User> violation : violations) {
System.out.println(violation.getMessage());
}
}
}
<dependency>
<groupId>org.apache.bval</groupId>
<artifactId>bval-jsr</artifactId>
<version>2.0.5</version>
</dependency>
