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JSR 224: Java API for XML-Based Web Services (JAX-WS)

JSR 269: Pluggable Annotation-Processing API

JSR 334: Small Enhancements to the Java Programming Language

JSR 292: Dynamically Typed Languages on the Java Platform

JSR 203: More New I/O APIs for the Java Platform (“NIO.2”)

JDK 7 Reference Card

File System

Access

Socket-

Channel

Binding and

Conguration

Scalable

Asynchronous

I/O

Starting with JDK 7, all les should be referenced through the new java.nio.le package,

instead of the now deprecated java.io.File. JDK 7 will now use the java.nio.le.Path class

to manipulate a le in any le system (FileSystem). is FileSystem can use any FileStor-

age.

Before Java 7, you did this:

File file = new File(“some_file”);

With Java 7, you can do this:

Path path = Paths.get(“some_file”);

Now, the File class has a new method toPath() that allows you to transform File to Path:

Path path = new File(“some_file”).toPath();

e network-oriented channel is updated! Now you can bind channel’s socket and

manipulate socket options directly. JDK 7 provides platform-/implementation-specic

socket options beyond those required by the specication.

•JDK 7 includes a new ByteChannel, the SeekableByteChannel, which maintains a

current position.

•NetworkChannel is the new super interface for the network-oriented channels. You

easily bind the channel socket, and set and query for socket options.

•eMulticastChannel interface enables you to create Internet Protocol Multicasting.

e multicast implementations are directly bound to the native multicast facility.

Run tens of thousands of streams in separate threads with true asynchronous I/O! JDK

7 provides asynchronous operations for both sockets and les. Some of the coolest JDK

7 channels are:

•AsynchronousFileChannel: An asynchronous channel for reading and writing from

and to a le.

•AsynchronousSocketChannel: A simple asynchronous channel to a socket. e

methods are asynchronous and support timeouts.

•AsynchronousServerSocketChannel: An asynchronous channel to a ServerSocket.

•AsynchronousDatagramChannel:A channel to datagram-oriented socket.

DaVinciMachineProject (JSR 292) is intended to extend the JVM to support languages other than Java –

especially dynamic languages. e supported languages should co-exist with Java as if they were there from

the beginning – no discriminations are permitted.

OpenJDK’s Project Coin (JSR 334) is intended to add a set of minor language changes for improving day-to-

day Java development. e list of changes includes:

• Stringsinswitchstatements

• Binaryintegralliteralsandunderscoresinnumericliterals

• Asinglecatchblocktohandlemultipleexceptiontypes

• Improvedtypeinferenceforgenericinstancecreation

• Try-with-resources statement to automatically close “resources”

JSR 222: Java Architecture for XML Binding (JAXB)

JSR 206: Java API for XML Processing (JAXP)

JSR 199: Java Compiler API

JSR 199 was added in JDK 6 and provides the ability to invoke a Java compiler via an API. Beyond the javac

command-line tool, JSR 199 provides Java compiler-to-programmatic interaction as well. e Java compiler API

serves three main goals:

• Invocationofacompilerorother tools

• Programmaticaccesstostructureddiagnosticmessages

• Abilitytocustomizeleinputandoutput

JSR 206 is known as Java API for XML Processing (JAXP), an implementation-independent portable API for

processing XML with Java.

e main JAXP 1.3 features include:

• DOMLevel3 core

• Abuilt-invalidationprocessorforXML Schema

• AthoroughimplementationofXMLSchemadatatypesin javax.xml.datatype

• XSLTC,thefastcompilingtransformer,whichisnowthedefaultengineforXSLTprocessing

• Animplementationof XInclude,whichmakesitpossibletobuildadocumentusingtextorXMLstoredinreusable

segments elsewhere

JDK7willcontainJAXP1.3, which is the latest release of JAXP.

JSR224isknownastheJavaAPIforXML-basedWebServices(JAX-WS),aprogrammingmodelbasedonastandard

annotation model for developing Web services applications and clients.

e main JAX-WS 2 features include:

• SupportforJAXB2.1APIs(JSR222)

• SupportforWebServicesAddressing1.0

• APIsforEndpointReference(EPR):Creation(BindingProvider.getEndpointReference(),

Endpoint.getEndpointReference(), MessageContext.getEndpointReference()),

 Propagation(UsingJAXB2.1tobindW3CEPRtoW3CEndpointReferenceclass,

 Marshall/UnmarshallW3CEndpointReferenceclassusingJAXB)

• UserfriendlyAPIstoenable/disablefeatures,suchasMTOMandAddressing

JDK7willcontainJAX-WS2.2, which is the latest release of JAX-WS.

JSR 222 is known as Java Architecture for XML Binding (JAXB). e goal of JAXB is to allow Java developers to

map Java classes to XML representations.

e main features of JAXB 2 include:

• SupportforallW3CXMLSchemafeatures(JAXB1.0didnotspecifybindingsforsomeoftheW3CXMLSchema

features.)

• Supportfor binding Java to XML, with the addition of the javax.xml.bind.annotation package to control this binding.

• Asignicantreductioninthenumberofgeneratedschema-derivedclasses

• AdditionalvalidationcapabilitiesthroughtheJAXP1.3validationAPIs

JDK7willcontainJAXB2.2, which is the latest release of JAXB.

JSR 269 is known as Pluggable Annotation-Processing API

• StartingwithJDK5,annotationsbecameapowerfulmechanismforannotatingclasses,eldsandmethods.

Commonly, annotations are processed at build-time or run-time to get new semantic eects. is JSR denes APIs to

allow annotation processors to be created using a standard pluggable API.

• especicationwillincludeatleastasectionoftheAPImodelingtheJavaprogramminglanguageandasectionfor

declaring annotation processors and controlling how they are run.

• Sinceannotationsareplacedonprogramelements,anannotation-processingframeworkneedstoreectprogram

structure.

• Annotationprocessorswillbeabletospecifywhatannotationstheyprocessandmultipleprocessorswillbeableto

run cooperatively.

• eprocessorsandprogramstructureAPIcanbeaccessedatbuild-time.

NEWLY INCLUDED JSRs

CHANGED JSRs (in Maintenance Reviews)

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chenyuelin311

2014-12-27

不错，是官方项文版，谢谢楼主分享了。

evil_killer

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