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這篇文章展示了最常用的Java實(shí)用工具類及其最常用的方法。類列表及其方法列表均按受歡迎程度排序。數(shù)據(jù)基于從GitHub隨機(jī)選擇的50,000個(gè)開(kāi)源Java項(xiàng)目。

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希望您可以通過(guò)瀏覽列表來(lái)了解已經(jīng)提供和流行的功能的一些想法,以使您知道不需要自己實(shí)現(xiàn)。這些方法的名稱通常指示它們的作用。如果方法名稱不夠直觀,您還可以查看其他開(kāi)發(fā)人員如何在其開(kāi)源項(xiàng)目中使用它們。
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()
文章名稱:排名前 16 的 Java 工具類,哪個(gè)你沒(méi)用過(guò)?
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