List of new features of Java 7 (transfer)

Officially, Java 7 will be officially released on July 28. Normally we should see this version on July 29. Soon, just two days.

Before the release, let's take a look at what new features Java 7 has.

Architecture diagram of Java 7:

List of new features:

Swing

The new JLayer class is a flexible and powerful Swing component decorator. How to use it: How to Decorate Components with JLayer .
The Nimbus Look and Feel appearance is com.sun.java.swing moved from the bag to the javax.swing bag, details:javax.swing.plaf.nimbus
Easier mix of heavyweight and lightweight components
For graphical interfaces that support transparent forms and non-rectangular forms, please see How to Create Translucent and Shaped Windows
JColorChooser Added HSV tab to the class.

The internet

新增 URLClassLoader.close Method, please see Closing a URLClassLoader .
Support Sockets Direct Protocol (SDP) to provide high-performance network connection, please see Understanding the Sockets Direct Protocol for details .

set

新增 TransferQueue Interface, it is BlockingQueue an improved version, the implementation class is LinkedTransferQueue

RIA/release

The draggable applet is decorated with a default or customized title, details: Requesting and Customizing Applet Decoration in Draggable Applets .
The JNLP file has been enhanced in the following areas. For details, please see JNLP File Syntax :
- The os attribute in the information and resources elements can now contain specific versions of Windows, such as Windows Vista or Windows 7.
- Applications can use the install attribute in the shortcut element to specify their their desire to be installed. Installed applications are not removed when the Java Web Start cache is cleared, but can be explicitly removed using the Java Control Panel.
- Java Web Start applications can be deployed without specifying the codebase attribute; see Deploying Without Codebase
You can embed JNLP files directly in HTML: Embedding JNLP File in Applet Tag .
可在 JavaScript 代码中检查 Applet 是否已经加载完成：Handling Initialization Status With Event Handlers.
可在 Applet 从快捷方式启动或者拖出浏览器时对窗口样式和标题进行控制：Requesting and Customizing Applet Decoration in Developing Draggable Applets.

XML

java.lang 包

Java 虚拟机

支持非 Java 语言: Java SE 7 引入一个新的 JVM 指令用于简化实现动态类型编程语言
Garbage-First Collector 是一个服务器端的垃圾收集器用于替换 Concurrent Mark-Sweep Collector (CMS).
提升了 Java HotSpot 虚拟机的性能

Java I/O

java.nio.file 包以及相关的包 java.nio.file.attribute 提供对文件 I/O 以及访问文件系统的全面支持，请看 File I/O (featuring NIO.2).

安全性

并发

fork/join 框架，基于 ForkJoinPool 类，是 Executor 接口的实现，设计它用来进行高效的运行大量任务；使用 work-stealing 技术用来保证大量的 worker 线程工作，特别适合多处理器环境，详情请看 Fork/Join
- 目录<Java home>/sample/forkjoin/ 包含了 fork/join 框架的演示程序
ThreadLocalRandom 类class 消除了使用伪随机码线程的竞争，请看 Concurrent Random Numbers.
Phaser 类是一个新的同步的屏障，与 CyclicBarrier 类似.

Java 2D

一个新的基于 XRender 的 Java 2D 渲染管道支持现在的 X11 桌面，改善了图形性能，请看 System Properties for Java 2D Technology 中的 xrender .
JDK 可枚举并显示出已安装的 OpenType/CFF 字体，通过GraphicsEnvironment.getAvailableFontFamilyNames 方法 See Selecting a Font.
TextLayout 类支持西藏语脚本
libfontconfig, 是一个字体配置 api ，see Fontconfig.

国际化

支持 Unicode 6.0.0
- 目录 <Java home>/demo/jfc/Font2DTest/ 包含 Unicode 6.0 的演示程序
- Java SE 7 可容纳在 ISO 4217 中新的货币，详情请看 Currency 类.

Java 编程语言特性

JDBC 4.1