排名前 16 的 Java 工具类，你都用过哪些？

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

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

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

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

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

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

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

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

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

format()  
 
parse()  
 

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

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

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

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

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

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