The Jakarta Apache Project has released Commons Lang 2.4, an open source collection of "helper utilities for the java.lang API, notably String manipulation methods, basic numerical methods, object reflection, creation and serialization, and System properties. Additionally it contains an inheritable enum type, an exception structure that supports multiple types of nested-Exceptions, basic enhancements to java.util.Date and a series of utlities dedicated to help with building methods, such as hashCode, toString and equals." Classes include:
CharRangeCharSetCharSetUtilsCompareToBuilderEnumEnum.Entry EnumUtils EqualsBuilder ExceptionUtils HashCodeBuilder Nestable NestableDelegate NestableError NestableException NestableRuntimeException NumberRange NumberUtils ObjectUtils ObjectUtils.Null RandomStringUtils SerializationException SerializationUtils StandardToStringStyle StringUtils SystemUtils ToStringBuilder ToStringStyle ToStringStyle.DefaultToStringStyle ToStringStyle.MultiLineToStringStyle ToStringStyle.NoFieldNameToStringStyle ToStringStyle.SimpleToStringStyle ValuedEnum ArrayUtilsBitFieldBooleanUtilsCharRange (previously package scoped)ClassUtilsStringEscapeUtilsWordUtilsIllegalClassExceptionIncompleteArgumentExceptionNotImplementedExceptionNullArgumentExceptionSerializationExceptionUnhandledExceptionValidateIntRangeLongRangeRangeDoubleRangeJVMRandomNumberRangeFloatRangeNumberUtilsFractionRandomUtils DateFormatUtilsFastDateFormatDateUtilsStopWatchCompositeFormatStrBuilderStrLookupStrMatcherStrSubstitutorStrTokenizer
New classes and interfaces in this release include IEEE754rUtils, ExtendedMessageFormat , and FormatFactory.
There are also 58 new methods including 15 in StringUtils:
There's a lot of good stuff here. Everyone should check it out, at least for the ideas even if you don't want to use the library.