com.liferay.util
Classes 
Autocomplete
BeanParamUtil
BeanUtil
ColorUtil
ConcurrentHashSet
ContextReplace
CookieUtil
CreditCard
Distance
Encryptor
ExtPropertiesLoader
FileComparator
FileUtil
FiniteStack
FiniteUniqueStack
HTMLParser
JMSUtil
JNDIUtil
JS
JSONUtil
License
ListUtil
LocalizationUtil
MapUtil
MathUtil
Normalizer
NumberFormatUtil
PKParser
PropertyComparator
PwdGenerator
ResourceBundleUtil
RSSUtil
Screenshot
SetUtil
SimpleCounter
State
StateUtil
SystemProperties
TextFormatter
Time
UniqueList
Version
Exceptions 
EncryptorException