這篇文章主要講解了“Java開發(fā)中常用的工具類庫有哪些”，文中的講解內(nèi)容簡單清晰，易于學(xué)習(xí)與理解，下面請(qǐng)大家跟著小編的思路慢慢深入，一起來研究和學(xué)習(xí)“Java開發(fā)中常用的工具類庫有哪些”吧！
拜城ssl適用于網(wǎng)站、小程序/APP、API接口等需要進(jìn)行數(shù)據(jù)傳輸應(yīng)用場(chǎng)景，ssl證書未來市場(chǎng)廣闊！成為成都創(chuàng)新互聯(lián)的ssl證書銷售渠道，可以享受市場(chǎng)價(jià)格4-6折優(yōu)惠！如果有意向歡迎電話聯(lián)系或者加微信：18982081108（備注：SSL證書合作）期待與您的合作！
Apache?Commons是一個(gè)非常有用的工具包，為解決各種實(shí)際的問題提供了通用現(xiàn)成的代碼，不需要我們程序員再重復(fù)造輪子。關(guān)于這個(gè)類庫的詳細(xì)介紹可以訪問官網(wǎng)介紹。下面表格列出了部分的工具包。我們平時(shí)開發(fā)過程中可以根據(jù)自己的需要挑選合適的工具包。
| Components | Description | Latest Version | Released |
|---|---|---|---|
| BCEL | Byte Code Engineering Library - analyze, create, and manipulate Java class files | 6.3.1 | 2019/3/24 |
| BeanUtils | Easy-to-use wrappers around the Java reflection and introspection APIs. | 1.9.3 | 2016/9/26 |
| BSF | Bean Scripting Framework - interface to scripting languages, including JSR-223 | 3.1 | 2010/6/24 |
| Chain | Chain of Responsibility pattern implemention. | 1.2 | 2008/6/2 |
| CLI | Command Line arguments parser. | 1.4 | 2017/3/9 |
| Codec | General encoding/decoding algorithms (for example phonetic, base64, URL). | 1.12 | 2019/2/16 |
| Collections | Extends or augments the Java Collections Framework. | 4.3 | 2019/2/5 |
| Compress | Defines an API for working with tar, zip and bzip2 files. | 1.18 | 2018/8/16 |
| Configuration | Reading of configuration/preferences files in various formats. | 2.4 | 2018/10/29 |
| Crypto | A cryptographic library optimized with AES-NI wrapping Openssl or JCE algorithm implementations. | 1.0.0 | 2016/7/22 |
| CSV | Component for reading and writing comma separated value files. | 1.6 | 2018/9/25 |
| Daemon | Alternative invocation mechanism for unix-daemon-like java code. | 1.0.15 | 2013/4/3 |
| DBCP | Database connection pooling services. | 2.6.0 | 2019/2/19 |
| DbUtils | JDBC helper library. | 1.7 | 2017/7/20 |
| Digester | XML-to-Java-object mapping utility. | 3.2 | 2011/12/13 |
| Library for sending e-mail from Java. | 1.5 | 2017/8/1 | |
| Exec | API for dealing with external process execution and environment management in Java. | 1.3 | 2014/11/6 |
| FileUpload | File upload capability for your servlets and web applications. | 1.4 | 2019/1/16 |
| Functor | A functor is a function that can be manipulated as an object, or an object representing a single, generic function. | 1 | 2011-??-?? |
| Geometry | Space and coordinates. | 1 | 2018-??-?? |
| Imaging (previously called Sanselan) | A pure-Java image library. | 0.97-incubator | 2009/2/20 |
| IO | Collection of I/O utilities. | 2.6 | 2017/10/15 |
| JCI | Java Compiler Interface | 1.1 | 2013/10/14 |
| JCS | Java Caching System | 2.2,1 | 2018/8/23 |
| Jelly | XML based scripting and processing engine. | 1.0.1 | 2017/9/27 |
| Jexl | Expression language which extends the Expression Language of the JSTL. | 3.1 | 2017/4/14 |
| JXPath | Utilities for manipulating Java Beans using the XPath syntax. | 1.3 | 2008/8/14 |
| Lang | Provides extra functionality for classes in java.lang. | 3.9 | 2019/4/15 |
| Logging | Wrapper around a variety of logging API implementations. | 1.2 | 2014/7/11 |
| Math | Lightweight, self-contained mathematics and statistics components. | 3.5 | 2015/4/17 |
| Net | Collection of network utilities and protocol implementations. | 3.6 | 2017/2/15 |
| Numbers | Number types (complex, quaternion, fraction) and utilities (arrays, combinatorics). | 1 | 2017-??-?? |
| OGNL | An Object-Graph Navigation Language | 4 | 2013-??-?? |
| Pool | Generic object pooling component. | 2.6.2 | 2019/4/11 |
| Proxy | Library for creating dynamic proxies. | 1 | 2008/2/28 |
| RDF | Common implementation of RDF 1.1 that could be implemented by systems on the JVM. | 0.3.0-incubating | 2016/11/15 |
| RNG | Implementations of random numbers generators. | 1.2 | 2018/12/12 |
| SCXML | An implementation of the State Chart XML specification aimed at creating and maintaining a Java SCXML engine.It is capable of executing a state machine defined using a SCXML document, and abstracts out the environment interfaces. | 0.9 | 2008/12/1 |
| Statistics | Statistics. | 0.1 | ????-??-?? |
| Text | Apache Commons Text is a library focused on algorithms working on strings. | 1.6 | 2018/10/16 |
| Validator | Framework to define validators and validation rules in an xml file. | 1.6 | 2017/2/21 |
| VFS | Virtual File System component for treating files, FTP, SMB, ZIP and such like as a single logical file system. | 2.3 | 2019/2/4 |
| Weaver | Provides an easy way to enhance (weave) compiled bytecode. | 2 | 2018/9/7 |
除了上面表格中的工具包，Apache Common項(xiàng)目還包括以下幾個(gè)工具包，其中的http-client是我們平時(shí)非常常用的。
Cactus: Cactus is a simple test framework for unit testing server-side java code (Servlets, EJBs, Tag Libs, Filters, ...). The intent of Cactus is to lower the cost of writing tests for server-side code.
HiveMind: HiveMind is a services and configuration microkernel. HiveMind allows you to create your application using a service oriented architecture.
HttpClient 3.x: Framework for working with the client-side of the HTTP protocol.
Naming: The Naming subproject will contain common JNDI code along with various JNDI providers.
Guava工程包含了若干被Google的 Java項(xiàng)目廣泛依賴 的核心庫，例如：集合 [collections] 、緩存 [caching] 、原生類型支持 [primitives support] 、并發(fā)庫 [concurrency libraries] 、通用注解 [common annotations] 、字符串處理 [string processing] 、I/O 等等。下面列出Guava工具包中的常用功能點(diǎn)，以便需要的時(shí)候查閱使用。
使用和避免null：null是模棱兩可的，會(huì)引起令人困惑的錯(cuò)誤，有些時(shí)候它讓人很不舒服。很多Guava工具類用快速失敗拒絕null值，而不是盲目地接受。
前置條件: 讓方法中的條件檢查更簡單。
常見Object方法: 簡化Object方法實(shí)現(xiàn)，如hashCode()和toString()。
排序: Guava強(qiáng)大的”流暢風(fēng)格比較器”
Throwables：簡化了異常和錯(cuò)誤的傳播與檢查。
Guava對(duì)JDK集合的擴(kuò)展，這是Guava最成熟和為人所知的部分
不可變集合: 用不變的集合進(jìn)行防御性編程和性能提升。
新集合類型: multisets, multimaps, tables, bidirectional maps等。
強(qiáng)大的集合工具類: 提供java.util.Collections中沒有的集合工具。
擴(kuò)展工具類：讓實(shí)現(xiàn)和擴(kuò)展集合類變得更容易，比如創(chuàng)建Collection的裝飾器，或?qū)崿F(xiàn)迭代器。
Guava Cache：本地緩存實(shí)現(xiàn)，支持多種緩存過期策略。
Guava的函數(shù)式支持可以顯著簡化代碼，但請(qǐng)謹(jǐn)慎使用它。
強(qiáng)大而簡單的抽象，讓編寫正確的并發(fā)代碼更簡單
ListenableFuture：完成后觸發(fā)回調(diào)的Future
Service框架：抽象可開啟和關(guān)閉的服務(wù)，幫助你維護(hù)服務(wù)的狀態(tài)邏輯
非常有用的字符串工具，包括分割、連接、填充等操作
擴(kuò)展 JDK 未提供的原生類型（如int、char）操作， 包括某些類型的無符號(hào)形式
可比較類型的區(qū)間API，包括連續(xù)和離散類型
簡化I/O尤其是I/O流和文件的操作，針對(duì)Java5和6版本
提供比Object.hashCode()更復(fù)雜的散列實(shí)現(xiàn)，并提供布魯姆過濾器的實(shí)現(xiàn)
發(fā)布-訂閱模式的組件通信，但組件不需要顯式地注冊(cè)到其他組件中
優(yōu)化的、充分測(cè)試的數(shù)學(xué)工具類
Guava 的 Java 反射機(jī)制工具類
FileCopyUtils；
WebUtil；
感謝各位的閱讀，以上就是“Java開發(fā)中常用的工具類庫有哪些”的內(nèi)容了，經(jīng)過本文的學(xué)習(xí)后，相信大家對(duì)Java開發(fā)中常用的工具類庫有哪些這一問題有了更深刻的體會(huì)，具體使用情況還需要大家實(shí)踐驗(yàn)證。這里是創(chuàng)新互聯(lián)，小編將為大家推送更多相關(guān)知識(shí)點(diǎn)的文章，歡迎關(guān)注！
重慶分公司
重慶分公司
