Collation of common tools in commons Lang

One 、commons-lang3

1、 character string , Numbers , date , Array and other tool classes

StringUtils String utility class

 Including judgment methods ：contains/containsXXX 
 String substitution method :replace/replaceXXX 
 Get substring ：substring/substringXXX 
 Judgment method ：
1、isEmpty/isNotEmpty/isBlank/isNotBlank/isNumeric/isWhitespace
2、sartsWith/startsWithAny/endsWith/endsWithIgnoreCase
 Indexes (index)：indexOf/indexOfXXX/tIndexOf/lastIndexOfXXX
 processing method ：
    abbreviate  To shorten the  capitalise  The first letter  repeat  repeat  left/right/center  Left and right middle 
    removeXXX  remove  trimXXX  Go empty   reverseXXX  Flip  stripXXX  remove 
    defaultXXX  Default  lowerCase/upperCase deleteXXX  Delete processing 
    splitXXX Decomposition treatment  join  Splicing 

StringEscapeUtils

escapeCsv/unescapeCsv/escapeHtml/unescapeHtml/escapeJava/unescapeJava
escapeJavaScript/unescapeJavaScript/escapeXml/unescapeXml/escapeSql

NumberUtils Digital tools

 Create numbers ：createXXX   establish Integer,Float,Double,Number,BigDecimal,BigInteger Equal number 
 Character to number ：toXXX      String to number ：Byte,Double,Float,Int,Long,Short
 Judge whether it's a number ：isDigits/isNumber
 Other methods ：compare,max,min,

ArrayUtils Array utility class

 Add remove :add,addAll,remove,removeElement,
 Copy ：clone
 Judge ：contains,isEmpty,isNotEmpty,isEquals,isSameLength,
 other ：getLength,indexOf,lastIndexOf,nullToEmpty,reverse,subArray,
 transformation ：toMap,toObject,toPrimitive,toString

RandomUtils Random number tool class

nextBoolean/nextInt/nextLong/nextFloat/nextDouble

RandomStringUtils Random string tool class

random/randomNumeric/randomAlphabetic/randomAscii

DateUtils Date tool class

 explain :XXX Express milisecends,seconds,minutes,hours,days,weeks,months,years
 Time plus minus ：add/addXXX 
 Set the time : setXXX 
 Get the clip : getFragmentInXXX     obtain date Of 1 month 1 Japan 0 spot 0 branch 0 The fragment value from seconds to the specified time 
 Judge ： isSameDay/isSameInstant/isSameLocalTime
 transformation ： parseDate/parseDateStrictly
 modulus ： ceiling/round/truncate
 Period of time ：iterator    Be careful rangeStyle=1 To 4 Indicates the range of weeks and the offset ,5 and 6 Indicates the month offset 

DateFormatUtils Time format

 format ：format/formatUTC

DurationFormatUtils Time period formatting

formatDuration/formatDurationHMS/formatDurationISO
formatPeriod/formatPeriodISO
formatDurationWords

StopWatch Stopwatch

start/stop/suspend/split/resume/reset/unsplit
getSplitTime/getStartTime/getTime/
toSplitString/toString

EnumUtils Enumerate utility classes

getEnum/getEnumIgnoreCase/getEnumList/getEnumMap
iterator

2、java Reflection tools

ClassUtils Class tools

 obtain ： 
    1、 Classes and interfaces  ：getClass/getAllInterfaces/getAllSuperclasses/getShortClassName
    2、 package ：getPackageName/getPackageCanonicalName
    3、 Method ：getPublicMethod
 transformation ：
    1、toClass/convertClassesToClassNames/convertClassNamesToClasses/
    2、primitivesToWrappers/primitiveToWrapper/wrappersToPrimitives/wrapperToPrimitive
 Judge ：isAssignable/isInnerClass

MethodUtils

getAccessibleMethod/getMatchingAccessibleMethod
invokeMethod/invokeStaticMethod/invokeExactMethod/invokeExactStaticMethod

FieldUtils Field tool class

getField/readField/writeField
getDeclaredField/readDeclaredField/writeDeclaredField
readDeclaredStaticField/readStaticField/writeDeclaredStaticField/writeStaticField

ConstructorUtils

getAccessibleConstructor/getMatchingAccessibleConstructor
invokeConstructor/invokeExactConstructor

ObjectUtils Object tool class

max/min/toString/identityToString/appendIdentityToString/defaultIfNull

SystemUtils System properties tool class

getJavaHome/getJavaIoTmpDir/getJavaVersion/getUserDir/getUserHome/
isJavaAwtHeadless/isJavaVersionAtLeast

LocaleUtils Local tools

availableLocaleList/availableLocaleSet
countriesByLanguage
localeLookupList/toLocale/isAvailableLocale/languagesByCountry

SerializationUtils Serialization tool class

clone/deserialize/serialize

Two 、commons-collecions package

CollectionUtils Collection tool class

 add to / Delete :addAll/addIgnoreNull/retainAll/removeAll/
 obtain ：
	find/get/containsAny/index/size/sizeIsEmpty/select/selectRejected/subtract
	typedCollection
 Judge ： 
	isEmpty/isNotEmpty/isFull/exists/isEqualCollection/
	isSubCollection/isProperSubCollection 
 transformation ： 
	collect/transform/transformedCollection/predicatedCollection
	unmodifiableCollection/synchronizedCollection 
 Calculation ：cardinality/countMatches/maxSize
 Filter ：filter
 aggregate ：intersection/union/disjunction   intersection , Combine , Difference set 
 Other operating ：
   reverseArray   Flip   forAllDo  Execute closures for each element 
   getCardinalityMap  Turn into Map,key Is an element ,value It's the number of times 

ListUtils-List Tool class

 Judge ： isEqualList
 aggregate ：intersection/sum/union/retainAll  intersection , Combine , Collection , Difference set 
 operation ：removeAll/hashCodeForList
 A subset of ： typedList/subtract/fixedSizeList
 Conversion processing ：synchronizedList/unmodifiableList/predicatedList/transformedList/lazyList

SetUtils-Set Collection tool class

 Judge ：isEqualSet
 Conversion processing ：
		transformedSet/transformedSortedSet/predicatedSet/predicatedSortedSet
		unmodifiableSet/synchronizedSet/synchronizedSortedSet
		orderedSet/typedSet/typedSortedSet
 operation ：hashCodeForSet

MapUtils-Map Tool class

 obtain ：getObject/getString/getXXX/getXXXValue   Get the value of the specified type ,getXXXValue  If there is no value, the default value 
 A subset of ：fixedSizeMap/fixedSizeSortedMap/typedMap/typedSortedMap
 Judge ：isEmpty/isNotEmpty
 transformation ：
	predicatedMap/predicatedSortedMap/transformedMap/transformedSortedMap/
	synchronizedMap/synchronizedSortedMap/
	unmodifiableMap/unmodifiableSortedMap/multiValueMap/orderedMap
	toMap/toProperties/lazyMap/lazySortedMap
 Add remove ：safeAddToMap/putAll
 Other operating ：invertMap/debugPrint/verbosePrint

Other tools

MultiKey - by Map More customized Key

 Map map = new HashMap();
 MultiKey multiKey = new MultiKey(key, locale);
 map.put(multiKey, localizedText);

 // later retireve the localized text
 MultiKey multiKey = new MultiKey(key, locale);
 String localizedText = (String) map.get(multiKey);
  The main method ： getKey,getKeys,size

Functions are programming classes

//  Preprocessing functions 
AllPredicate/AndPredicate/AnyPredicate/UniquePredicate/NonePredicate/IdentityPredicate
EqualPredicate/FalsePredicate/TruePredicate/ExceptionPredicate
NullPredicate/OnePredicate/OrPredicate/InstanceofPredicate
TransformedPredicate/TransformerPredicate/NullIsFalsePredicate/NullIsTruePredicate
NotNullPredicate
NotPredicate
// Closure function 
ChainedClosure/ExceptionClosure/WhileClosure/ForClosure/IfClosure/NOPClosure
TransformerClosure/SwitchClosure/NullIsExceptionPredicate
// Conversion processing 
ChainedTransformer/CloneTransformer/ClosureTransformer/ConstantTransformer
ExceptionTransformer/FactoryTransformer/MapTransformer/InstantiateTransformer
NOPTransformer/PredicateTransformer/StringValueTransformer/SwitchTransformer
InvokerTransformer
// factory 
ConstantFactory/ExceptionFactory/InstantiateFactory/PrototypeFactory

3、 ... and 、commons-io package

FileUtils File operation tool class

 Folder operation ： 
 copyDirectory/deleteDirectory/cleanDirectory/getTempDirectory/getTempDirectoryPath
 moveDirectory/moveDirectoryToDirectory/moveFileToDirectory/moveToDirectory
 forceMkdir/getUserDirectory/getUserDirectoryPath
 File operations ：
	touch/copyFile/copyURLToFile/moveFile/deleteQuietly/forceDelete/forceDeleteOnExit
	toFile/toFiles/toURLs
	isFileNewer/isFileOlder
	readLines/readFileToByteArray/readFileToString/lineIterator/openOutputStream
	write/writeLines/writeByteArrayToFile/writeStringToFile/openInputStream
 Other operating ：
    iterateFiles/listFiles/contentEquals/sizeOf/sizeOfDirectory

IOUtils Stream operation tool class

 Read operations ：lineIterator/read/readLines
 Write operations ：write/writeLines
 transformation ： toInputStream/toBufferedInputStream/toByteArray/toCharArray/toString
 Other operating ：copy/copyLarge/contentEquals/skip/skipFully/closeQuietly

FilenameUtils File name tool class

 obtain ：
	getName/getBaseName/getPrefix/getPrefixLength/getExtension
	getPath/getFullPath/getFullPathNoEndSeparator/getPathNoEndSeparator
 Judge ：
	isExtension/equals/equalsNormalized/equalsOnSystem
 Other operating ：
	removeExtension/indexOfExtension
	separatorsToSystem/separatorsToUnix/separatorsToWindows
	indexOfLastSeparator

Other tools

 File comparator ：
    CompositeFileComparator/DefaultFileComparator/DirectoryFileComparator
    ExtensionFileComparator/LastModifiedFileComparator/NameFileComparator
    PathFileComparator/PathFileComparator
 File filter ：
    AgeFileFilter/AndFileFilter/CanReadFileFilter/CanWriteFileFilter
    DelegateFileFilter/DirectoryFileFilter/EmptyFileFilter/FalseFileFilter/FileFileFilter
    FileFilterUtils/HiddenFileFilter/MagicNumberFileFilter/NameFileFilter/NotFileFilter
    OrFileFilter/PrefixFileFilter/RegexFileFilter/SizeFileFilter/SuffixFileFilter
    TrueFileFilter/WildcardFileFilter/WildcardFilter

Four 、commons-beanutils package

BeanUtils/BeanUtilsBean

 Copy ： cloneBean/copyProperties/copyProperty
 obtain ：getArrayProperty/getSimpleProperty/getProperty
 Other operating ：setProperty Set properties  populate take Bean Set to Map in   describe take Bean Turn into Map   

PropertyUtils class

 Judge ：isReadable/isWriteable
 obtain ：
	getProperty/getSimpleProperty/getPropertyType 
	getReadMethod/getWriteMethod/getIndexedProperty/setIndexedProperty
	getMappedProperty/setMappedProperty/getNestedProperty/setNestedProperty  
	getPropertyDescriptor/getPropertyEditorClass
 Copy and set ：copyProperties/setProperty/setSimpleProperty /clearDescriptors       

ConstructorUtils

getAccessibleConstructor/invokeConstructor/invokeExactConstructor 

ConvertUtils

 Set up ：setDefaultBoolean/setDefaultByte/setDefaultCharacter/setDefaultDouble/
	setDefaultFloat/setDefaultInteger/setDefaultLong/setDefaultShort/
 obtain ：getDefaultBoolean/getDefaultByte/getDefaultCharacter/getDefaultDouble/getDefaultFloat/
	getDefaultInteger/getDefaultLong/getDefaultShort/
 transformation ：convert/
 other ：deregister/lookup/register/primitiveToWrapper/

MethodUtils

 obtain ：getAccessibleMethod/getMatchingAccessibleMethod/getPrimitiveType/getPrimitiveWrapper
 other ：invokeExactMethod/invokeMethod/isAssignmentCompatible/toNonPrimitiveClass