Customer validation annotations

Customer.java

package com.example.validation;

import lombok.Data;

import javax.validation.constraints.Email;
import javax.validation.constraints.NotBlank;

@Data
public class Customer {

  @NotBlank
  private final String name;

  @Email
  private final String email;

  public Customer(String name, String email) {
    this.name = name;
    this.email = email;
  }
}