Java工具类有哪些

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1.org.apache.commons.io.IOUtils

closeQuietly()   toString()   copy()   toByteArray()   write()   toInputStream()   readLines()   copyLarge()   lineIterator()   readFully()

2.org.apache.commons.io.FileUtils

deleteDirectory()   readFileToString()   deleteQuietly()   copyFile()   writeStringToFile()   forceMkdir()   write()   listFiles()   copyDirectory()   forceDelete()

3.org.apache.commons.lang.StringUtils

isBlank()   isNotBlank()   isEmpty()   isNotEmpty()   equals()   join()   split()   EMPTY   trimToNull()   replace()

4.org.apache.http.util.EntityUtils

toString()   consume()   toByteArray()   consumeQuietly()   getContentCharSet()

5.org.apache.commons.lang3.StringUtils

isBlank()   isNotBlank()   isEmpty()   isNotEmpty()   join()   equals()   split()   EMPTY   replace()   capitalize()

6.org.apache.commons.io.FilenameUtils

getExtension()   getBaseName()   getName()   concat()   removeExtension()   normalize()   wildcardMatch()   separatorsToUnix()   getFullPath()   isExtension()

7.org.springframework.util.StringUtils

hasText()   hasLength()   isEmpty()   commaDelimitedListToStringArray()   collectionToDelimitedString()   replace()   delimitedListToStringArray()   uncapitalize()   collectionToCommaDelimitedString()   tokenizeToStringArray()

8.org.apache.commons.lang.ArrayUtils

contains()   addAll()   clone()   isEmpty()   add()   EMPTY_BYTE_ARRAY   subarray()   indexOf()   isEquals()   toObject()

9.org.apache.commons.lang.StringEscapeUtils

escapeHtml()   unescapeHtml()   escapeXml()   escapeSql()   unescapeJava()   escapeJava()   escapeJavaScript()   unescapeXml()   unescapeJavaScript()

10.org.apache.http.client.utils.URLEncodedUtils

format()   parse()

11.org.apache.commons.codec.digest.DigestUtils

md5Hex()   shaHex()   sha256Hex()   sha1Hex()   sha()   md5()   sha512Hex()   sha1()

12.org.apache.commons.collections.CollectionUtils

isEmpty()   isNotEmpty()   select()   transform()   filter()   find()   collect()   forAllDo()   addAll()   isEqualCollection()

13.org.apache.commons.lang3.ArrayUtils

contains()   isEmpty()   isNotEmpty()   add()   clone()   addAll()   subarray()   indexOf()   EMPTY_OBJECT_ARRAY   EMPTY_STRING_ARRAY

14.org.apache.commons.beanutils.PropertyUtils

getProperty()   setProperty()   getPropertyDescriptors()   isReadable()   copyProperties()   getPropertyDescriptor()   getSimpleProperty()   isWriteable()   setSimpleProperty()   getPropertyType()

15.org.apache.commons.lang3.StringEscapeUtils

unescapeHtml4()   escapeHtml4()   escapeXml()   unescapeXml()   escapeJava()   escapeEcmaScript()   unescapeJava()   escapeJson()   escapeXml10()

16.org.apache.commons.beanutils.BeanUtils

copyProperties()   getProperty()   setProperty()   describe()   populate()   copyProperty()   cloneBean()

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