排名前 16 的 Java 工具类

org.apache.commons.io.IOUtils

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

org.apache.commons.io.FileUtils

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

org.apache.commons.lang.StringUtils

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

org.apache.http.util.EntityUtils

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

org.apache.commons.lang3.StringUtils

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

org.apache.commons.io.FilenameUtils

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

org.springframework.util.StringUtils

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

org.apache.commons.lang.ArrayUtils

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

org.apache.commons.lang.StringEscapeUtils

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

org.apache.http.client.utils.URLEncodedUtils

format()
parse()

org.apache.commons.codec.digest.DigestUtils

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

org.apache.commons.collections.CollectionUtils

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

org.apache.commons.lang3.ArrayUtils

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

org.apache.commons.beanutils.PropertyUtils

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

org.apache.commons.lang3.StringEscapeUtils

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

org.apache.commons.beanutils.BeanUtils

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