Java8API文档（官方离线版）_jdk8离线文档,java8离线文档资源-CSDN文库

共10617个文件

html：10460个

gif：63个

eot：20个

5星 · 超过95%的资源需积分: 50 10 浏览量 2018-03-29 09:14:29 上传评论 2 收藏 43.35MB ZIP 举报

Java 8 API是Java开发的重要参考资料，它包含了Java 8版本的所有公共类、接口和方法的详细说明。这个官方离线版的文档让开发者无需互联网连接也能查阅相关信息，极大地方便了学习和开发过程。 Java 8引入了lambda表达式，这是一种简洁的匿名函数形式，可以作为参数传递或在任何期望函数的地方使用。Lambda表达式的语法是`(parameters) -> expression`，例如`(int x, int y) -> x + y`。这使得处理集合数据和编写多线程代码变得更加简洁。 Java 8引入了函数式编程的概念，通过`java.util.function`包提供了大量预定义的函数类型，如Predicate、Function、Consumer等。这些接口允许我们将函数作为一等公民对待，增强了代码的可读性和可复用性。 Stream API是Java 8的另一个重大改进，它为处理集合数据提供了一种声明式方式。`java.util.stream`包包含了一系列操作，如map、filter、reduce等，可以对集合进行高效的并行或串行处理。Stream API特别适合大数据量操作和复杂的转换，提高了代码的简洁性和性能。 Java 8还对日期和时间API进行了重写，引入了`java.time`包。旧的`java.util.Date`和`java.util.Calendar`被更直观、更易用的`LocalDate`、`LocalTime`、`LocalDateTime`等类取代。这些新类提供了更丰富的操作和格式化功能，简化了日期和时间的处理。此外，Java 8的Optional类是一个容器对象，可能包含或不包含非null值。它用于表示那些可能缺失的结果，避免空指针异常，增强了代码的健壮性。使用`Optional`可以更好地表达方法返回值的可有可无，使得代码更清晰。在并发处理方面，`Fork/Join`框架和`Parallel Streams`的结合使得开发者可以轻松地编写并行程序。`ForkJoinPool`和`RecursiveTask`、`RecursiveAction`接口提供了一种分治策略，而并行流自动利用多核处理器优势，提高执行效率。 Java 8还对反射API进行了增强，提供了`MethodHandle`和`invokedynamic`指令，这对于动态语言支持和高性能的元编程场景非常有用。`MethodHandles`类提供了更安全、更高效的方式来查找和调用方法。 Java 8 API带来了许多创新和改进，不仅提升了开发效率，也使得代码更加简洁、高效。通过深入理解和熟练使用这些新特性，开发者能够写出更现代、更易于维护的Java应用程序。这个官方离线版的文档是每一个Java 8开发者必备的参考资料，它详尽地阐述了每个类和接口的功能与用法，有助于开发者快速查询和学习。

资源推荐

资源详情

资源评论

收起资源包目录

Java8API文档（官方离线版）（10617个子文件）

stylesheet.css 13KB

dejavu.css 9KB

synth.dtd 4KB

DejaVuSerif-Italic-webfont.eot 46KB

DejaVuSerifCondensed-Italic-webfont.eot 46KB

DejaVuSerif-BoldItalic-webfont.eot 46KB

DejaVuSerifCondensed-BoldItalic-webfont.eot 45KB

DejaVuSansMono-Oblique-webfont.eot 43KB

DejaVuSerif-Bold-webfont.eot 42KB

DejaVuSerifCondensed-webfont.eot 42KB

DejaVuSerifCondensed-Bold-webfont.eot 42KB

DejaVuSerif-webfont.eot 42KB

DejaVuSansMono-BoldOblique-webfont.eot 42KB

DejaVuSansCondensed-BoldOblique-webfont.eot 42KB

DejaVuSans-BoldOblique-webfont.eot 41KB

DejaVuSans-Oblique-webfont.eot 41KB

DejaVuSansCondensed-Oblique-webfont.eot 41KB

DejaVuSansMono-webfont.eot 38KB

DejaVuSansCondensed-webfont.eot 38KB

DejaVuSans-webfont.eot 38KB

DejaVuSansMono-Bold-webfont.eot 37KB

DejaVuSans-Bold-webfont.eot 36KB

DejaVuSansCondensed-Bold-webfont.eot 36KB

Document-notification.gif 12KB

FocusCycle.gif 7KB

Document-structure.gif 6KB

JRootPane-1.gif 5KB

ImplicitFocusTransfer.gif 5KB

editor.gif 5KB

paragraph.gif 5KB

List-1.gif 4KB

Document-remove.gif 4KB

Document-insert.gif 4KB

groupLayout.3.gif 3KB

groupLayout.2.gif 3KB

MultiScreen.gif 3KB

groupLayout.1.gif 3KB

modal-example4.gif 3KB

modal-example3.gif 3KB

UndoManager-1.gif 3KB

UndoManager-4.gif 3KB

UndoManager-2.gif 3KB

BorderLayout-1.gif 3KB

UndoManager-3.gif 3KB

JRootPane-2.gif 3KB

groupLayout.sequential.vertical.gif 3KB

groupLayout.sequential.gif 3KB

GridBagLayout-1.gif 3KB

GridBagLayout-2.gif 3KB

TextField-1.gif 2KB

JScrollPane-1.gif 2KB

Document-coord.gif 2KB

groupLayout.sequential.horizontal.gif 2KB

Checkbox-1.gif 2KB

modal-example2.gif 2KB

MenuBar-1.gif 2KB

OpenBookIcon.gif 2KB

TextArea-1.gif 2KB

modal-example1.gif 2KB

Scrollbar-2.gif 2KB

Button-1.gif 2KB

FlowLayout-1.gif 2KB

JLayeredPane-1.gif 2KB

BoxLayout-1.gif 2KB

GridLayout-2.gif 2KB

GridLayout-1.gif 2KB

Scrollbar-1.gif 968B

SizeSequence-1.gif 912B

Label-1.gif 819B

CheckboxGroup-1.gif 712B

Choice-1.gif 486B

FontMetrics-1.gif 290B

javalang.doc.anc38.gif 220B

javalang.doc.anc21.gif 206B

javalang.doc.anc41.gif 191B

javalang.doc.anc40.gif 187B

captheta.gif 153B

chi.gif 145B

theta.gif 144B

capchi.gif 144B

capupsil.gif 140B

sigma1.gif 135B

upsilon.gif 133B

capsigma.gif 131B

iota.gif 112B

capiota.gif 111B

String.html 5.06MB

index-7.html 4.23MB

Object.html 3.1MB

index-19.html 2.31MB

index-9.html 1.49MB

index-3.html 1.44MB

serialized-form.html 1.4MB

overview-tree.html 1.38MB

constant-values.html 1.19MB

index-16.html 1.06MB

index-18.html 1.03MB

index-1.html 1024KB

IOException.html 1009KB

Serializable.html 906KB

共 10617 条

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  <html lang="en"> <head>  <title>Uses of Class java.lang.String (Java Platform SE 8 )</title> <meta name="date" content="2017-07-21"> <link rel="stylesheet" type="text/css" href="../../../stylesheet.css" title="Style"> <script type="text/javascript" src="../../../script.js"></script> </head> <body> <script type="text/javascript"> </script> <noscript> <div>JavaScript is disabled on your browser.</div> </noscript>  <div class="topNav"><a name="navbar.top">  </a> <div class="skipNav"><a href="#skip.navbar.top" title="Skip navigation links">Skip navigation links</a></div> <a name="navbar.top.firstrow">  </a> <ul class="navList" title="Navigation"> <li><a href="../../../overview-summary.html">Overview</a></li> <li><a href="../package-summary.html">Package</a></li> <li><a href="../../../java/lang/String.html" title="class in java.lang">Class</a></li> <li class="navBarCell1Rev">Use</li> <li><a href="../package-tree.html">Tree</a></li> <li><a href="../../../deprecated-list.html">Deprecated</a></li> <li><a href="../../../index-files/index-1.html">Index</a></li> <li><a href="../../../help-doc.html">Help</a></li> </ul> <div class="aboutLanguage"><strong>Java™ Platform<br>Standard Ed. 8</strong></div> </div> <div class="subNav"> <ul class="navList"> <li>Prev</li> <li>Next</li> </ul> <ul class="navList"> <li><a href="../../../index.html?java/lang/class-use/String.html" target="_top">Frames</a></li> <li><a href="String.html" target="_top">No Frames</a></li> </ul> <ul class="navList" id="allclasses_navbar_top"> <li><a href="../../../allclasses-noframe.html">All Classes</a></li> </ul> <div> <script type="text/javascript"> </script> </div> <a name="skip.navbar.top">  </a></div>  <div class="header"> <h2 title="Uses of Class java.lang.String" class="title">Uses of Class<br>java.lang.String</h2> </div> <div class="classUseContainer"> <ul class="blockList"> <li class="blockList"> <table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing packages, and an explanation"> <caption><span>Packages that use <a href="../../../java/lang/String.html" title="class in java.lang">String</a></span><span class="tabEnd"> </span></caption> <tr> <th class="colFirst" scope="col">Package</th> <th class="colLast" scope="col">Description</th> </tr> <tbody> <tr class="altColor"> <td class="colFirst"><a href="#java.applet">java.applet</a></td> <td class="colLast"> <div class="block">Provides the classes necessary to create an applet and the classes an applet uses to communicate with its applet context.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="#java.awt">java.awt</a></td> <td class="colLast"> <div class="block">Contains all of the classes for creating user interfaces and for painting graphics and images.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="#java.awt.color">java.awt.color</a></td> <td class="colLast"> <div class="block">Provides classes for color spaces.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="#java.awt.datatransfer">java.awt.datatransfer</a></td> <td class="colLast"> <div class="block">Provides interfaces and classes for transferring data between and within applications.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="#java.awt.dnd">java.awt.dnd</a></td> <td class="colLast"> <div class="block">Drag and Drop is a direct manipulation gesture found in many Graphical User Interface systems that provides a mechanism to transfer information between two entities logically associated with presentation elements in the GUI.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="#java.awt.event">java.awt.event</a></td> <td class="colLast"> <div class="block">Provides interfaces and classes for dealing with different types of events fired by AWT components.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="#java.awt.font">java.awt.font</a></td> <td class="colLast"> <div class="block">Provides classes and interface relating to fonts.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="#java.awt.geom">java.awt.geom</a></td> <td class="colLast"> <div class="block">Provides the Java 2D classes for defining and performing operations on objects related to two-dimensional geometry.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="#java.awt.im.spi">java.awt.im.spi</a></td> <td class="colLast"> <div class="block">Provides interfaces that enable the development of input methods that can be used with any Java runtime environment.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="#java.awt.image">java.awt.image</a></td> <td class="colLast"> <div class="block">Provides classes for creating and modifying images.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="#java.awt.image.renderable">java.awt.image.renderable</a></td> <td class="colLast"> <div class="block">Provides classes and interfaces for producing rendering-independent images.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="#java.awt.print">java.awt.print</a></td> <td class="colLast"> <div class="block">Provides classes and interfaces for a general printing API.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="#java.beans">java.beans</a></td> <td class="colLast"> <div class="block">Contains classes related to developing <em>beans</em> -- components based on the JavaBeans™ architecture.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="#java.beans.beancontext">java.beans.beancontext</a></td> <td class="colLast"> <div class="block">Provides classes and interfaces relating to bean context.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="#java.io">java.io</a></td> <td class="colLast"> <div class="block">Provides for system input and output through data streams, serialization and the file system.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="#java.lang">java.lang</a></td> <td class="colLast"> <div class="block">Provides classes that are fundamental to the design of the Java programming language.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="#java.lang.annotation">java.lang.annotation</a></td> <td class="colLast"> <div class="block">Provides library support for the Java programming language annotation facility.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="#java.lang.instrument">java.lang.instrument</a></td> <td class="colLast"> <div class="block">Provides services that allow Java programming language agents to instrument programs running on the JVM.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="#java.lang.invoke">java.lang.invoke</a></td> <td class="colLast"> <div class="block">The <code>java.lang.invoke</code> package contains dynamic language support provided directly by the Java core class libraries and virtual machine.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="#java.lang.management">java.lang.management</a></td> <td class="colLast"> <div class="block">Provides the management interfaces for monitoring and management of the Java virtu

评论收藏

内容反馈