[Vaadin] Add ons - Vaadin Bean Validation

주소 : https://vaadin.com/directory#addon/vaadin-bean-validation

샘플

package com.vaadin.addon.beanvalidation.demo;

import javax.validation.constraints.Digits;
import javax.validation.constraints.Max;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;

public class BeanToValidate {
    @NotNull
    @Size(min = 3, max = 16)
    private String firstname;

    @NotNull(message = "Last name must not be empty")
    private String lastname;

    @Min(value = 18, message = "Must be 18 or above")
    @Max(150)
    private int age;

    @Digits(integer = 3, fraction = 2)
    private String decimals;

    public String getFirstname() {
        return firstname;
    }

    public void setFirstname(String firstname) {
        this.firstname = firstname;
    }

    public String getLastname() {
        return lastname;
    }

    public void setLastname(String lastname) {
        this.lastname = lastname;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getDecimals() {
        return decimals;
    }

    public void setDecimals(String decimals) {
        this.decimals = decimals;
    }

}