前 16 名 Java 实用工具类

从 GitHub 随机选择的 50,000 个开源 Java 项目中统计出最常用的 16 个 Java 实用工具类类及其最常用的方法,类列表和方法列表都按人气排序。

  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 ( )

原文 http://www.programcreek.com/2015/12/top-10-java-utility-classes/