U

union() method, Pointcuts class,130

unit testing

difficulty of,2

example of,103–106

features for,6,18

guidelines for,160,161,593

mock objects used for,104–106

UpdatableSqlQuery class,JDBC,193–194

update methods,24

update statements,in iBATIS SQL mapping file,263

uploading files,478–481

UrlBasedViewResolver class,450–451

URLEditor class,103

UrlFilenameViewController class,459–460

UrlResource class,85,92

URLs,as resources,84

useCacheControlHeader property, WebContent Interceptor class,448

useExpiresHeader property, WebContent Interceptor class,448

UserRoleAuthorizationInterceptor class,448–449