All Classes and Interfaces

Class	Description
AbstractCircuitBreaker<T>	Base class for circuit breakers.
AbstractCircuitBreaker.State	An internal enumeration representing the different states of a circuit breaker.
AbstractConcurrentInitializer<T,E extends Exception>	Abstracts and defines operations for ConcurrentInitializer implementations.
AbstractConcurrentInitializer.AbstractBuilder<I extends AbstractConcurrentInitializer<T,E>,T,B extends AbstractConcurrentInitializer.AbstractBuilder<I,T,B,E>,E extends Exception>	Builds a new instance for subclasses.
AbstractFormatCache<F extends Format>	FormatCache is a cache and factory for Formats.
AbstractFormatCache.ArrayKey	Helper class to hold multipart Map keys as arrays.
AbstractFutureProxy<V>	Proxies to a Future for subclassing.
AbstractSupplier<T,B extends AbstractSupplier<T,B,E>,E extends Throwable>	Abstracts supplying an instance of T.
AggregateTranslator	Deprecated. As of 3.6, use Apache Commons Text AggregateTranslator instead
AnnotationUtils	Helper methods for working with Annotation instances.
ArchUtils	Provides methods for identifying the architecture of the current JVM based on the "os.arch" system property.
ArrayFill	Fills and returns arrays in the fluent style.
ArraySorter	Sorts and returns arrays in the fluent style.
ArrayUtils	Operations on arrays, primitive arrays (like int[]) and primitive wrapper arrays (like Integer[]).
AtomicInitializer<T>	A specialized implementation of the ConcurrentInitializer interface based on an AtomicReference variable.
AtomicInitializer.Builder<I extends AtomicInitializer<T>,T>	Builds a new instance.
AtomicSafeInitializer<T>	A specialized ConcurrentInitializer implementation which is similar to AtomicInitializer, but ensures that the AbstractConcurrentInitializer.initialize() method is called only once.
AtomicSafeInitializer.Builder<I extends AtomicSafeInitializer<T>,T>	Builds a new instance.
BackgroundInitializer<T>	A class that allows complex initialization operations in a background task.
BackgroundInitializer.Builder<I extends BackgroundInitializer<T>,T>	Builds a new instance.
BasicThreadFactory	An implementation of the ThreadFactory interface that provides some configuration options for the threads it creates.
BasicThreadFactory.Builder	A builder class for creating instances of BasicThreadFactory.
BitField	Supports operations on bit-mapped fields.
BooleanConsumer	A functional interface like IntConsumer but for boolean.
BooleanUtils	Operations on boolean primitives and Boolean objects.
Builder<T>	The Builder interface is designed to designate a class as a builder object in the Builder design pattern.
CalendarUtils	Helps use Calendars.
CallableBackgroundInitializer<T>	A specialized BackgroundInitializer implementation that wraps a Callable object.
CharEncoding	Deprecated. Java 7 introduced StandardCharsets, which defines these constants as Charset objects.
CharRange	A contiguous range of characters, optionally negated.
CharRange.CharacterIterator	Character Iterator.
CharSequenceTranslator	Deprecated. As of 3.6, use Apache Commons Text CharSequenceTranslator instead
CharSequenceUtils	Operations on CharSequence that are null safe.
CharSet	A set of characters.
Charsets	Internal use only.
CharSetUtils	Operations on CharSet instances.
CharUtils	Operations on char primitives and Character objects.
CircuitBreaker<T>	An interface describing a Circuit Breaker component.
CircuitBreakingException	An exception class used for reporting runtime error conditions related to circuit breakers.
ClassLoaderUtils	Helps work with ClassLoader.
ClassPathUtils	Operations regarding the classpath.
ClassUtils	Operates on classes without using reflection.
ClassUtils.Interfaces	Inclusivity literals for ClassUtils.hierarchy(Class, Interfaces).
CloneFailedException	Exception thrown when a clone cannot be created.
CodePointTranslator	Deprecated. As of 3.6, use Apache Commons Text CharSequenceTranslator instead
ComparableUtils	Utility library to provide helper methods for translating Comparable.compareTo(T) result into a boolean.
ComparableUtils.ComparableCheckBuilder<A extends Comparable<A>>	Provides access to the available methods
CompareToBuilder	Assists in implementing Comparable.compareTo(Object) methods.
CompositeFormat	Deprecated. As of 3.6, use Apache Commons Text CompositeFormat instead
Computable<I,O>	Definition of an interface for a wrapper around a calculation that takes a single parameter and returns a result.
ConcurrentException	An exception class used for reporting error conditions related to accessing data of background tasks.
ConcurrentInitializer<T>	Defines the thread-safe initialization of objects.
ConcurrentRuntimeException	An exception class used for reporting runtime error conditions related to accessing data of background tasks.
ConcurrentUtils	An utility class providing functionality related to the java.util.concurrent package.
ConcurrentUtils.ConstantFuture<T>	A specialized Future implementation which wraps a constant value.
ConstantInitializer<T>	A very simple implementation of the ConcurrentInitializer interface which always returns the same object.
ConstructorUtils	Utility reflection methods focused on constructors, modeled after MethodUtils.
Consumers	Provides Consumer instances.
ContextedException	An exception that provides an easy and safe way to add contextual information.
ContextedRuntimeException	A runtime exception that provides an easy and safe way to add contextual information.
Conversion	Static methods to convert a type into another, with endianness and bit ordering awareness.
DateFormatUtils	Date and time formatting utilities and constants.
DateParser	DateParser is the "missing" interface for the parsing methods of DateFormat.
DatePrinter	DatePrinter is the "missing" interface for the format methods of DateFormat.
DateUtils	A suite of utilities surrounding the use of the Calendar and Date object.
DateUtils.DateIterator	Date iterator.
DateUtils.ModifyType	Calendar modification types.
DefaultExceptionContext	Default implementation of the context storing the label-value pairs for contexted exceptions.
Diff<T>	A Diff contains the differences between two Diffable class fields.
Diffable<T>	Diffable classes can be compared with other objects for differences.
DiffBuilder<T>	Assists in implementing Diffable.diff(Object) methods.
DiffExclude	Excludes a field from being used by the ReflectionDiffBuilder.
DiffResult<T>	A DiffResult contains a collection of the differences between two Diffable objects.
DoubleRange	Specializes NumberRange for Doubles.
DurationFormatUtils	Duration formatting utilities and constants.
DurationFormatUtils.Token	Element that is parsed from the format pattern.
DurationUtils	Utilities for Duration.
EntityArrays	Deprecated. As of 3.6, use Apache Commons Text EntityArrays instead
EnumUtils	Utility library to provide helper methods for Java enums.
EqualsBuilder	Assists in implementing Object.equals(Object) methods.
EqualsExclude	Excludes a field from being used by the various reflectionEquals methods defined on EqualsBuilder.
EventCountCircuitBreaker	A simple implementation of the Circuit Breaker pattern that counts specific events.
EventCountCircuitBreaker.CheckIntervalData	An internally used data class holding information about the checks performed by this class.
EventCountCircuitBreaker.StateStrategy	Internally used class for executing check logic based on the current state of the circuit breaker.
EventCountCircuitBreaker.StateStrategyClosed	A specialized EventCountCircuitBreaker.StateStrategy implementation for the state closed.
EventCountCircuitBreaker.StateStrategyOpen	A specialized EventCountCircuitBreaker.StateStrategy implementation for the state open.
EventListenerSupport<L>	An EventListenerSupport object can be used to manage a list of event listeners of a particular type.
EventUtils	Provides some useful event-based utility methods.
EventUtils.EventBindingInvocationHandler
ExceptionContext	Allows the storage and retrieval of contextual information based on label-value pairs for exceptions.
ExceptionUtils	Provides utilities for manipulating and examining Throwable objects.
ExtendedMessageFormat	Deprecated. As of 3.6, use Apache Commons Text ExtendedMessageFormat instead
Failable	This class provides utility functions, and classes for working with the java.util.function package, or more generally, with Java 8 lambdas.
FailableBiConsumer<T,U,E extends Throwable>	A functional interface like BiConsumer that declares a Throwable.
FailableBiFunction<T,U,R,E extends Throwable>	A functional interface like BiFunction that declares a Throwable.
FailableBiPredicate<T,U,E extends Throwable>	A functional interface like BiPredicate that declares a Throwable.
FailableBooleanSupplier<E extends Throwable>	A functional interface like BooleanSupplier that declares a Throwable.
FailableCallable<R,E extends Throwable>	A functional interface like Callable that declares a Throwable.
FailableConsumer<T,E extends Throwable>	A functional interface like Consumer that declares a Throwable.
FailableDoubleBinaryOperator<E extends Throwable>	A functional interface like DoubleBinaryOperator that declares a Throwable.
FailableDoubleConsumer<E extends Throwable>	A functional interface like DoubleConsumer that declares a Throwable.
FailableDoubleFunction<R,E extends Throwable>	A functional interface like DoubleFunction that declares a Throwable.
FailableDoublePredicate<E extends Throwable>	A functional interface like DoublePredicate that declares a Throwable.
FailableDoubleSupplier<E extends Throwable>	A functional interface like DoubleSupplier that declares a Throwable.
FailableDoubleToIntFunction<E extends Throwable>	A functional interface like DoubleToIntFunction that declares a Throwable.
FailableDoubleToLongFunction<E extends Throwable>	A functional interface like DoubleToLongFunction that declares a Throwable.
FailableDoubleUnaryOperator<E extends Throwable>	A functional interface like DoubleUnaryOperator that declares a Throwable.
FailableFunction<T,R,E extends Throwable>	A functional interface like Function that declares a Throwable.
FailableIntBinaryOperator<E extends Throwable>	A functional interface like IntBinaryOperator that declares a Throwable.
FailableIntConsumer<E extends Throwable>	A functional interface like IntConsumer that declares a Throwable.
FailableIntFunction<R,E extends Throwable>	A functional interface like IntFunction that declares a Throwable.
FailableIntPredicate<E extends Throwable>	A functional interface like IntPredicate that declares a Throwable.
FailableIntSupplier<E extends Throwable>	A functional interface like IntSupplier that declares a Throwable.
FailableIntToDoubleFunction<E extends Throwable>	A functional interface like IntToDoubleFunction that declares a Throwable.
FailableIntToLongFunction<E extends Throwable>	A functional interface like IntToLongFunction that declares a Throwable.
FailableIntUnaryOperator<E extends Throwable>	A functional interface like IntUnaryOperator that declares a Throwable.
FailableLongBinaryOperator<E extends Throwable>	A functional interface like LongBinaryOperator that declares a Throwable.
FailableLongConsumer<E extends Throwable>	A functional interface like LongConsumer that declares a Throwable.
FailableLongFunction<R,E extends Throwable>	A functional interface like LongFunction that declares a Throwable.
FailableLongPredicate<E extends Throwable>	A functional interface like LongPredicate that declares a Throwable.
FailableLongSupplier<E extends Throwable>	A functional interface like LongSupplier that declares a Throwable.
FailableLongToDoubleFunction<E extends Throwable>	A functional interface like LongToDoubleFunction that declares a Throwable.
FailableLongToIntFunction<E extends Throwable>	A functional interface like LongToIntFunction that declares a Throwable.
FailableLongUnaryOperator<E extends Throwable>	A functional interface like LongUnaryOperator that declares a Throwable.
FailableObjDoubleConsumer<T,E extends Throwable>	A functional interface like ObjDoubleConsumer that declares a Throwable.
FailableObjIntConsumer<T,E extends Throwable>	A functional interface like ObjIntConsumer that declares a Throwable.
FailableObjLongConsumer<T,E extends Throwable>	A functional interface like ObjLongConsumer that declares a Throwable.
FailablePredicate<T,E extends Throwable>	A functional interface like Predicate that declares a Throwable.
FailableRunnable<E extends Throwable>	A functional interface like Runnable that declares a kind of Throwable.
FailableShortSupplier<E extends Throwable>	A functional interface like IntSupplier but for short that declares a Throwable.
FailableSupplier<T,E extends Throwable>	A functional interface like Supplier that declares a Throwable.
FailableToDoubleBiFunction<T,U,E extends Throwable>	A functional interface like ToDoubleBiFunction that declares a Throwable.
FailableToDoubleFunction<T,E extends Throwable>	A functional interface like ToDoubleFunction that declares a Throwable.
FailableToIntBiFunction<T,U,E extends Throwable>	A functional interface like ToIntBiFunction that declares a Throwable.
FailableToIntFunction<T,E extends Throwable>	A functional interface like ToIntFunction that declares a Throwable.
FailableToLongBiFunction<T,U,E extends Throwable>	A functional interface like ToLongBiFunction that declares a Throwable.
FailableToLongFunction<T,E extends Throwable>	A functional interface like ToLongFunction that declares a Throwable.
FastDateFormat	FastDateFormat is a fast and thread-safe version of SimpleDateFormat.
FastDateParser	FastDateParser is a fast and thread-safe version of SimpleDateFormat.
FastDateParser.CaseInsensitiveTextStrategy	A strategy that handles a text field in the parsing pattern
FastDateParser.CopyQuotedStrategy	A strategy that copies the static or quoted field in the parsing pattern
FastDateParser.ISO8601TimeZoneStrategy
FastDateParser.NumberStrategy	A strategy that handles a number field in the parsing pattern
FastDateParser.PatternStrategy	A strategy to parse a single field from the parsing pattern
FastDateParser.Strategy	A strategy to parse a single field from the parsing pattern
FastDateParser.StrategyAndWidth	Holds strategy and field width
FastDateParser.TimeZoneStrategy	A strategy that handles a time zone field in the parsing pattern
FastDateParser.TimeZoneStrategy.TzInfo
FastDatePrinter	FastDatePrinter is a fast and thread-safe version of SimpleDateFormat.
FastDatePrinter.CharacterLiteral	Inner class to output a constant single character.
FastDatePrinter.DayInWeekField	Inner class to output the numeric day in week.
FastDatePrinter.Iso8601_Rule	Inner class to output a time zone as a number +/-HHMM or +/-HH:MM.
FastDatePrinter.NumberRule	Inner class defining a numeric rule.
FastDatePrinter.PaddedNumberField	Inner class to output a padded number.
FastDatePrinter.Rule	Inner class defining a rule.
FastDatePrinter.StringLiteral	Inner class to output a constant string.
FastDatePrinter.TextField	Inner class to output one of a set of values.
FastDatePrinter.TimeZoneDisplayKey	Inner class that acts as a compound key for time zone names.
FastDatePrinter.TimeZoneNameRule	Inner class to output a time zone name.
FastDatePrinter.TimeZoneNumberRule	Inner class to output a time zone as a number +/-HHMM or +/-HH:MM.
FastDatePrinter.TwelveHourField	Inner class to output the twelve hour field.
FastDatePrinter.TwentyFourHourField	Inner class to output the twenty four hour field.
FastDatePrinter.TwoDigitMonthField	Inner class to output a two digit month.
FastDatePrinter.TwoDigitNumberField	Inner class to output a two digit number.
FastDatePrinter.TwoDigitYearField	Inner class to output a two digit year.
FastDatePrinter.UnpaddedMonthField	Inner class to output an unpadded month.
FastDatePrinter.UnpaddedNumberField	Inner class to output an unpadded number.
FastDatePrinter.WeekYear	Inner class to output the numeric day in week.
FastTimeZone	Faster methods to produce custom time zones.
FieldUtils	Utilities for working with Fields by reflection.
FluentBitSet	A fluent BitSet with additional operations.
FormatFactory	Deprecated. As of 3.6, use Apache Commons Text FormatFactory instead
FormattableUtils	Deprecated. As of 3.6, use Apache Commons Text FormattableUtils instead
Fraction	Fraction is a Number implementation that stores fractions accurately.
Functions	Factory for Function.
Functions	Deprecated. Use Failable.
Functions.FailableBiConsumer<O1,O2,T extends Throwable>	Deprecated. Use FailableBiConsumer.
Functions.FailableBiFunction<O1,O2,R,T extends Throwable>	Deprecated. Use FailableBiFunction.
Functions.FailableBiPredicate<O1,O2,T extends Throwable>	Deprecated. Use FailableBiPredicate.
Functions.FailableCallable<R,T extends Throwable>	Deprecated. Use FailableCallable.
Functions.FailableConsumer<O,T extends Throwable>	Deprecated. Use FailableConsumer.
Functions.FailableFunction<I,R,T extends Throwable>	Deprecated. Use FailableFunction.
Functions.FailablePredicate<I,T extends Throwable>	Deprecated. Use FailablePredicate.
Functions.FailableRunnable<T extends Throwable>	Deprecated. Use FailableRunnable.
Functions.FailableSupplier<R,T extends Throwable>	Deprecated. Use FailableSupplier.
FutureTasks	Consists of utility methods that work with FutureTask.
GmtTimeZone	Custom time zone that contains offset from GMT.
HashCodeBuilder	Assists in implementing Object.hashCode() methods.
HashCodeExclude	Exclude a field from being used by the various reflectionHashcode methods defined on HashCodeBuilder.
IDKey	Wrap an identity key (System.identityHashCode()) so that an object can only be equal() to itself.
IEEE754rUtils	Provides IEEE-754r variants of NumberUtils methods.
ImmutablePair<L,R>	An immutable pair consisting of two Object elements.
ImmutableTriple<L,M,R>	An immutable triple consisting of three Object elements.
InheritanceUtils	Utility methods focusing on inheritance.
IntegerRange	Specializes NumberRange for Integers.
IntStreams	Factory for IntStream.
IntToCharFunction	Represents a function that accepts an int-valued argument and produces a char-valued result.
JavaUnicodeEscaper	Deprecated. As of 3.6, use Apache Commons Text UnicodeEscaper instead
JavaVersion	An enum representing all the versions of the Java specification.
LangCollectors	Implementations of Collector that implement various useful reduction operations.
LangCollectors.SimpleCollector<T,A,R>	Simple implementation class for Collector.
LazyInitializer<T>	This class provides a generic implementation of the lazy initialization pattern.
LazyInitializer.Builder<I extends LazyInitializer<T>,T>	Builds a new instance.
LocaleUtils	Operations to assist when working with a Locale.
LocaleUtils.SyncAvoid
LockingVisitors	Combines the monitor and visitor pattern to work with locked objects.
LockingVisitors.LockVisitor<O,L>	Wraps a domain object and a lock for access by lambdas.
LockingVisitors.ReadWriteLockVisitor<O>	This class implements a wrapper for a locked (hidden) object, and provides the means to access it.
LockingVisitors.StampedLockVisitor<O>	This class implements a wrapper for a locked (hidden) object, and provides the means to access it.
LongRange	Specializes NumberRange for Longs.
LookupTranslator	Deprecated. As of 3.6, use Apache Commons Text LookupTranslator instead
MemberUtils	Contains common code for working with Methods/Constructors, extracted and refactored from MethodUtils when it was imported from Commons BeanUtils.
MemberUtils.Executable	A class providing a subset of the API of java.lang.reflect.Executable in Java 1.8, providing a common representation for function signatures for Constructors and Methods.
Memoizer<I,O>	Definition of an interface for a wrapper around a calculation that takes a single parameter and returns a result.
MethodInvokers	Converts Method objects to lambdas.
MethodUtils	Utility reflection methods focused on Methods, originally from Commons BeanUtils.
MultiBackgroundInitializer	A specialized BackgroundInitializer implementation that can deal with multiple background initialization tasks.
MultiBackgroundInitializer.MultiBackgroundInitializerResults	A data class for storing the results of the background initialization performed by MultiBackgroundInitializer.
MultilineRecursiveToStringStyle	Works with ToStringBuilder to create a "deep" toString.
Mutable<T>	Provides mutable access to a value.
MutableBoolean	A mutable boolean wrapper.
MutableByte	A mutable byte wrapper.
MutableDouble	A mutable double wrapper.
MutableFloat	A mutable float wrapper.
MutableInt	A mutable int wrapper.
MutableLong	A mutable long wrapper.
MutableObject<T>	A mutable Object wrapper.
MutablePair<L,R>	A mutable pair consisting of two Object elements.
MutableShort	A mutable short wrapper.
MutableTriple<L,M,R>	A mutable triple consisting of three Object elements.
NotImplementedException	Thrown to indicate that a block of code has not been implemented.
NumberRange<N extends Number>	Specializes Range for Numbers.
NumberUtils	Provides extra functionality for Java Number classes.
NumericEntityEscaper	Deprecated. As of 3.6, use Apache Commons Text NumericEntityEscaper instead
NumericEntityUnescaper	Deprecated. As of 3.6, use Apache Commons Text NumericEntityUnescaper instead
NumericEntityUnescaper.OPTION	Enumerates NumericEntityUnescaper options for unescaping.
ObjectToStringComparator	Compares Object's Object.toString() values.
ObjectUtils	Operations on Object.
ObjectUtils.Null	Class used as a null placeholder where null has another meaning.
OctalUnescaper	Deprecated. As of 3.6, use Apache Commons Text OctalUnescaper instead
Pair<L,R>	A pair consisting of two elements.
Processor	The Processor represents a microprocessor and defines some properties like architecture and type of the microprocessor.
Processor.Arch	The Processor.Arch enum defines the architecture of a microprocessor.
Processor.Type	The Processor.Type enum defines types of a microprocessor.
RandomStringUtils	Generates random Strings.
RandomUtils	Deprecated. Use Apache Commons RNG's optimized UniformRandomProvider
Range<T>	An immutable range of objects from a minimum to maximum point inclusive.
Range.ComparableComparator
RecursiveToStringStyle	Works with ToStringBuilder to create a "deep" toString.
Reflection	Package-private reflection code.
ReflectionDiffBuilder<T>	Assists in implementing Diffable.diff(Object) methods.
ReflectionToStringBuilder	Assists in implementing Object.toString() methods using reflection.
RegExUtils	Helpers to process Strings using regular expressions.
SerializationException	Exception thrown when the Serialization process fails.
SerializationUtils	Assists with the serialization process and performs additional functionality based on serialization.
SerializationUtils.ClassLoaderAwareObjectInputStream	Custom specialization of the standard JDK ObjectInputStream that uses a custom ClassLoader to resolve a class.
StandardToStringStyle	Works with ToStringBuilder to create a toString.
StopWatch	StopWatch provides a convenient API for timings.
StopWatch.SplitState	Enumeration type which indicates the split status of a StopWatch.
StopWatch.State	Enumeration type which indicates the status of a StopWatch.
StrBuilder	Deprecated. As of 3.6, use Apache Commons Text TextStringBuilder instead
Streams	Provides utility functions, and classes for working with the java.util.stream package, or more generally, with Java 8 lambdas.
Streams	Deprecated. Use Streams.
Streams.ArrayCollector<E>	A Collector type for arrays.
Streams.ArrayCollector<O>	Deprecated. Use Streams.ArrayCollector.
Streams.EnumerationSpliterator<T>	Helps implement Streams.of(Enumeration).
Streams.FailableStream<T>	A reduced, and simplified version of a Stream with failable method signatures.
Streams.FailableStream<O>	Deprecated. Use Streams.FailableStream.
StringEscapeUtils	Deprecated. As of 3.6, use Apache Commons Text StringEscapeUtils instead
StringEscapeUtils.CsvEscaper
StringEscapeUtils.CsvUnescaper
StringUtils	Operations on String that are null safe.
StrLookup<V>	Deprecated. As of 3.6, use Apache Commons Text StringLookupFactory instead
StrLookup.MapStrLookup<V>	Lookup implementation that uses a Map.
StrLookup.SystemPropertiesStrLookup	Lookup implementation based on system properties.
StrMatcher	Deprecated. As of 3.6, use Apache Commons Text StringMatcherFactory instead
StrMatcher.CharMatcher	Class used to define a character for matching purposes.
StrMatcher.CharSetMatcher	Class used to define a set of characters for matching purposes.
StrMatcher.NoMatcher	Class used to match no characters.
StrMatcher.StringMatcher	Class used to define a set of characters for matching purposes.
StrMatcher.TrimMatcher	Class used to match whitespace as per trim().
StrSubstitutor	Deprecated. As of 3.6, use Apache Commons Text StringSubstitutor instead
StrTokenizer	Deprecated. As of 3.6, use Apache Commons Text StringTokenizer instead
Suppliers	Helps use Supplier.
SystemProperties	Accesses current system property names and values.
SystemUtils	Helpers for java.lang.System.
ThreadUtils	Helpers for java.lang.Thread and java.lang.ThreadGroup.
ThreadUtils.AlwaysTruePredicate	Deprecated. Use a Predicate.
ThreadUtils.NamePredicate	Deprecated. Use a Predicate.
ThreadUtils.ThreadGroupPredicate	Deprecated. Use a Predicate.
ThreadUtils.ThreadIdPredicate	Deprecated. Use a Predicate.
ThreadUtils.ThreadPredicate	Deprecated. Use a Predicate.
ThresholdCircuitBreaker	A simple implementation of the Circuit Breaker pattern that opens if the requested increment amount is greater than a given threshold.
TimedSemaphore	A specialized semaphore implementation that provides a number of permits in a given time frame.
TimeZones	Helps to deal with TimeZones.
ToBooleanBiFunction<T,U>	A function that accepts two arguments and produces a boolean result.
ToStringBuilder	Assists in implementing Object.toString() methods.
ToStringExclude	Excludes a field from being used by the ReflectionToStringBuilder.
ToStringStyle	Controls String formatting for ToStringBuilder.
ToStringStyle.DefaultToStringStyle	Default ToStringStyle.
ToStringStyle.JsonToStringStyle	ToStringStyle that outputs with JSON format.
ToStringStyle.MultiLineToStringStyle	ToStringStyle that outputs on multiple lines.
ToStringStyle.NoClassNameToStringStyle	ToStringStyle that does not print out the class name and identity hash code but prints content start and field names.
ToStringStyle.NoFieldNameToStringStyle	ToStringStyle that does not print out the field names.
ToStringStyle.ShortPrefixToStringStyle	ToStringStyle that prints out the short class name and no identity hash code.
ToStringStyle.SimpleToStringStyle	ToStringStyle that does not print out the class name, identity hash code, content start or field name.
ToStringSummary	Use this annotation on the fields to get the summary instead of the detailed information when using ReflectionToStringBuilder.
TriConsumer<T,U,V>	Represents an operation that accepts three input arguments and returns no result.
TriFunction<T,U,V,R>	Represents a function that accepts three arguments and produces a result.
Triple<L,M,R>	A triple consisting of three elements.
Typed<T>	Generalization of "has a type."
TypeLiteral<T>	Type literal comparable to javax.enterprise.util.TypeLiteral, made generally available outside the JEE context.
TypeUtils	Utility methods focusing on type inspection, particularly with regard to generics.
TypeUtils.GenericArrayTypeImpl	GenericArrayType implementation class.
TypeUtils.ParameterizedTypeImpl	ParameterizedType implementation class.
TypeUtils.WildcardTypeBuilder	WildcardType builder.
TypeUtils.WildcardTypeImpl	WildcardType implementation class.
UncheckedException	Abstracts the concept of wrapping a checked exception as unchecked.
UncheckedExecutionException	Unchecked ExecutionException.
UncheckedFuture<V>	An Future that throws unchecked instead checked exceptions.
UncheckedFutureImpl<V>	An Future implementation that throws unchecked instead of checked exceptions.
UncheckedIllegalAccessException	Unchecked IllegalAccessException.
UncheckedInterruptedException	Unchecked InterruptedException.
UncheckedReflectiveOperationException	Unchecked ReflectiveOperationException.
UncheckedTimeoutException	Unchecked TimeoutException.
UnicodeEscaper	Deprecated. As of 3.6, use Apache Commons Text UnicodeEscaper instead
UnicodeUnescaper	Deprecated. As of 3.6, use Apache Commons Text UnicodeUnescaper instead
UnicodeUnpairedSurrogateRemover	Deprecated. As of 3.6, use Apache Commons Text UnicodeUnpairedSurrogateRemover instead
Validate	This class assists in validating arguments.
WordUtils	Deprecated. As of 3.6, use Apache Commons Text WordUtils instead