package com.piggymetrics.account.domain; import org.hibernate.validator.constraints.Length; import javax.validation.constraints.NotNull; public class User { @NotNull @Length(min = 3, max = 20) private String username; @NotNull @Length(min = 6, max = 40) private String password; public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } }