今天跟大家分享一下最常用的Java實用工具類類及其最常用的方法。類列表和方法列表都按人氣排序。數據基於從GitHub隨機選擇的50,000個開源Java項目。
1. org.apache.commons.io.IOUtils
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closeQuietly ( )
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toString ( )
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copy ( )
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toByteArray ( )
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write ( )
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toInputStream ( )
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readLines ( )
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copyLarge ( )
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lineIterator ( )
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readFully ( )
2. org.apache.commons.io.FileUtils
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deleteDirectory ( )
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readFileToString ( )
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deleteQuietly ( )
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copyFile ( )
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writeStringToFile ( )
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forceMkdir ( )
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write ( )
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listFiles ( )
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copyDirectory ( )
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forceDelete ( )
3. org.apache.commons.lang.StringUtils
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isBlank ( )
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isNotBlank ( )
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isEmpty ( )
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isNotEmpty ( )
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equals ( )
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join ( )
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split ( )
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EMPTY
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trimToNull ( )
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replace ( )
4. org.apache.http.util.EntityUtils
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toString ( )
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consume ( )
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toByteArray ( )
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consumeQuietly ( )
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getContentCharSet ( )
5. org.apache.commons.lang3.StringUtils
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isBlank ( )
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isNotBlank ( )
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isEmpty ( )
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isNotEmpty ( )
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join ( )
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equals ( )
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split ( )
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EMPTY
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replace ( )
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capitalize ( )
6. org.apache.commons.io.FilenameUtils
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getExtension ( )
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getBaseName ( )
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getName ( )
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concat ( )
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removeExtension ( )
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normalize ( )
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wildcardMatch ( )
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separatorsToUnix ( )
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getFullPath ( )
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isExtension ( )
7. org.springframework.util.StringUtils
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hasText ( )
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hasLength ( )
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isEmpty ( )
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commaDelimitedListToStringArray ( )
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collectionToDelimitedString ( )
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replace ( )
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delimitedListToStringArray ( )
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uncapitalize ( )
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collectionToCommaDelimitedString ( )
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tokenizeToStringArray ( )
8. org.apache.commons.lang.ArrayUtils
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contains ( )
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addAll ( )
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clone ( )
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isEmpty ( )
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add ( )
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EMPTY_BYTE_ARRAY
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subarray ( )
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indexOf ( )
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isEquals ( )
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toObject ( )
9. org.apache.commons.lang.StringEscapeUtils
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escapeHtml ( )
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unescapeHtml ( )
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escapeXml ( )
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escapeSql ( )
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unescapeJava ( )
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escapeJava ( )
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escapeJavaScript ( )
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unescapeXml ( )
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unescapeJavaScript ( )
10. org.apache.http.client.utils.URLEncodedUtils
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format ( )
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parse ( )
11. org.apache.commons.codec.digest.DigestUtils
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md5Hex ( )
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shaHex ( )
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sha256Hex ( )
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sha1Hex ( )
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sha ( )
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md5 ( )
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sha512Hex ( )
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sha1 ( )
12. org.apache.commons.collections.CollectionUtils
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isEmpty ( )
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isNotEmpty ( )
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select ( )
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transform ( )
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filter ( )
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find ( )
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collect ( )
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forAllDo ( )
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addAll ( )
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isEqualCollection ( )
13. org.apache.commons.lang3.ArrayUtils
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contains ( )
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isEmpty ( )
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isNotEmpty ( )
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add ( )
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clone ( )
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addAll ( )
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subarray ( )
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indexOf ( )
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EMPTY_OBJECT_ARRAY
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EMPTY_STRING_ARRAY
14. org.apache.commons.beanutils.PropertyUtils
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getProperty ( )
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setProperty ( )
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getPropertyDescriptors ( )
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isReadable ( )
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copyProperties ( )
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getPropertyDescriptor ( )
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getSimpleProperty ( )
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isWriteable ( )
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setSimpleProperty ( )
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getPropertyType ( )
15. org.apache.commons.lang3.StringEscapeUtils
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unescapeHtml4 ( )
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escapeHtml4 ( )
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escapeXml ( )
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unescapeXml ( )
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escapeJava ( )
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escapeEcmaScript ( )
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unescapeJava ( )
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escapeJson ( )
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escapeXml10 ( )
16. org.apache.commons.beanutils.BeanUtils
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copyProperties ( )
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getProperty ( )
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setProperty ( )
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describe ( )
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populate ( )
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copyProperty ( )
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cloneBean ( )
原文地址：http://www.programcreek.com/2015/12/top-10-java-utility-classes/