update to spring 5

spring-mvc-forms-jsp/src/main/java/com/baeldung/springmvcforms/configuration/ApplicationConfiguration.java

@@ -8,14 +8,13 @@ import org.springframework.web.multipart.MultipartResolver;
 import org.springframework.web.multipart.commons.CommonsMultipartResolver;
 import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
 import org.springframework.web.servlet.config.annotation.EnableWebMvc;
-import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
-import org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 import org.springframework.web.servlet.view.InternalResourceViewResolver;
 
 @Configuration
 @EnableWebMvc
 @ComponentScan(basePackages = {"com.baeldung.springmvcforms", "com.baeldung.jstl"})
-class ApplicationConfiguration extends WebMvcConfigurerAdapter {
+class ApplicationConfiguration implements WebMvcConfigurer {
 
     @Override
     public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {

spring-mvc-forms-jsp/src/main/java/com/baeldung/springmvcforms/domain/User.java

@@ -1,13 +1,12 @@
 package com.baeldung.springmvcforms.domain;
 
 import javax.validation.constraints.Digits;
+import javax.validation.constraints.Email;
 import javax.validation.constraints.Min;
+import javax.validation.constraints.NotBlank;
 import javax.validation.constraints.NotNull;
 import javax.validation.constraints.Size;
 
-import org.hibernate.validator.constraints.Email;
-import org.hibernate.validator.constraints.NotBlank;
-
 public class User {
 
     @NotNull