public class User {
private String username;
private String password;
}
public class ValidationTest {
public static void main(String[] args) {
User user = new User();
user.setUsername("admin");
user.setPassword("password123");
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());
}
}
}
