Time for action – using the CSV framework with the Bean Validation API

Let us see how we can use the Bean Validation API to specify validation constraints and perform validations using PrimeFaces client-side validations, by performing the following steps:

1. Create the UserBean class and specify the validation constraints using the Bean Validation API annotations:

   public class UserBean
   {
       private Integer id;
       @Pattern(regexp="^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$", message="Invalid Email Id")
       private String emailId;
       @Size(min=2,max=5)  
       private String password;
       @Size(min=1, message="FirstName should not be empty")
       private String firstName;
       private String lastName;
       @Pattern(regexp="^\\d{3}-\\d{3}-\\d{4}$")
       private String phone;
       @Past
       private Date dob;
       @AssertTrue(message="You must agree to Terms and Conditions")
       private boolean agreeToTnc;
       
       //setters and getters
   }

2. Create the User Registration...