news

linux下建立JAVA虚拟机的源码KAFFE

New in release 0.91 (UNRELEASED)

* Experimental printing support: The API implementation of the javax.print 
  packages has been finished and work on the printing provider implementation
  started. Currently supported features from the Java Print Service API are 
  print service discovery (CUPS registered printers), single document print 
  jobs and support for client-formatted print data. An example application
  (see: examples/gnu/classpath/examples/print/Demo) has been added to show 
  the API usage for service discovery and printing of files.
* Free Swing improvements: Support for OceanTheme has been mostly completed
  and turned on as default Metal theme.

Runtime interface changes:

* A new class, VMArray, is now available which separates the native
  array creation method from java.lang.reflect.Array.  
* A new class, gnu.classpath.Unsafe, is provided for handling the
  new low-level operations required by java.util.concurrent.

New in release 0.90 (March 6, 2006)

* Free Swing improvements: JTable columns are rearrangeable and
  resizeable with mouse. Painting and scrolling are now much
  faster. Plain text components now support highlighting and
  copy+paste to the system clipboard. Support for styled text has been
  improved, including some very basic HTML support. JFileChooser is
  now usable. Global event dispatching has been implemented. Memory
  consumption of Swing components has been reduced. Lots of general
  bugfixes. Added new system property to turn off Graphics2D use in
  Swing, even if Graphics2D is available: gnu.javax.swing.noGraphics2D

* AWT. Improved support for mixing "lightweight" and "heavyweight"
  Components in Containers. Better support for dynamically updated
  menus. Better 1.0 event model support for Scrollbars. Better class
  documentation of gtk+ awt peers.

* GNU Crypto and Jessie have been merged into GNU Classpath; this
  provides Classpath with a wide array of cryptographic algorithms
  (ciphers, message digests, etc.) and implementations of SSL version
  3 and TLS version 1. These roughly complement the public
  `java.security.' `javax.crypto,' and `javax.net.ssl' packages, and
  are service providers implementing the underlying algorithms.
 
* Updated HTTP and FTP URLConnection protocol handlers. HTTPS support
  out of the box.

* Unicode 4.0.0 is supported. Character now includes support for using
  ether a char or an int to identify code points.

* More correct handling of Object methods and serialization support
  for Proxy and abstract classes.

* The new folder tools includes GIOP and RMI stub and tie source code
  generators, IOR parser and both transient and persistent GIOP naming
  services.

* Added experimental support for dynamic creation of the RMI stubs
  using proxy classes. The rmic compiler is no longer required (unless
  for research and specific stubs).

* XML validaton support for RELAX NG and W3C XML schema namespace
  URIs. RELAX NG pluggable XML schema datatype library API and an
  implementation for XML Schema Datatypes
  (http://www.w3.org/TR/xmlschema-2/).

* Updated StAX implementaton to be compatible with final JSWDP 2.0.

* The default back end for java.util.prefs has been changed.  The new
  default is capable of saving and restoring preferences to and from
  the file system.

* javax.imageio.plugins.bmp implementation.

* Added --enable-collections configure option which builds
  "collections.jar", a 1.1 VM compatibility jar.

* gnu.regexp updated from GNU/Posix syntax to support util.regex
  syntax including various Unicode blocks, categories and properties.

Runtime interface changes:

* A new class, VMMath, is now available which separates the native
  mathematical functions from java.lang.Math.  The previous fdlibm
  implementation now forms the reference material for this class.

* Updated VMObjectInputStream class to return Thread context class
  loader if no other class loader is found.

* Updated documentation on InstrumentationImpl in vmintegration guide.

New in release 0.20 (Jan 13, 2006)

* New StAX pull parser and SAX-over-StAX driver. Lots of DOM, SAX/StAX,
  XPath and XSLT improvements.  Support for XInclude and XML Base added.
  Conformance is now regularly tested against various test-suites at
  http://builder.classpath.org/xml/ See also doc/README.jaxp.

* Full beans XMLEncoder implementation.

* javax.sound.sampled implementation.

* javax.print.attribute and javax.print.event implementated.

* Lots of new datatransfer, print swing and swing.text work and optimization.

* Additional 1.5 support. Including new (separate) generic branch release.

* SecurityManager cleanups and start of review of all Permission checks
  (includes adding lots of new checks to the Mauve test-suite).

* Buildable on cygwin.

* Fully buildable as "in-workspace" library-plus-vm inside (native) Eclipse
  see http://developer.classpath.org/mediation/ClasspathHackingWithEclipse

* Full example that shows a real world CORBA and Free Swing implementation.
  See examples/gnu/classpath/examples/CORBA/swing/README.html

* A list of bug fixes can be found at:
http://gcc.gnu.org/bugzilla/buglist.cgi?product=classpath&target_milestone=0.20

Runtime interface changes:

* New method VMStackWalker.getClassLoader() was added to avoid an infinite
  loop between getCallingClassLoader() and Class.getClassLoader().

* The included fdlibm implementation has seen several cleanups to handle
  new architectures and namespacing issues (in particular for ppc, darwin
  and non-C99 compilers). Please double check any arithmetic test against
  new platforms/runtimes.

* The gnu.java.net.Plain[Datagram]Socket implementations have been
  turned into VM reference classes with JNI/Posix implementations.

New in release 0.19 (Nov 2, 2005)

* The Swing RepaintManager has been reworked for more efficient painting,
  especially for large GUIs.

* The Swing layout manager OverlayLayout has been implemented, the BoxLayout
  has been rewritten to make use of the SizeRequirements utility class and
  caching for more efficient layout.

* Improved accessibility support for Swing.

* The java.net.HttpURLConnection implementation no longer buffers the
  entire response body in memory.  This means that response bodies
  larger than available memory can now be handled.

* The Andrew Watson, Vice President and Technical Director of the Object
  Management Group, has officially assigned us 20 bit Vendor Minor Code Id: 
  0x47430 ("GC") that will mark remote Classpath - specific system exceptions.
  Obtaining the VMCID means that GNU Classpath now is a recogniseable type of
  node in a highly interoperable CORBA world. 

* Classpath now includes the first working draft to support the RMI over
  IIOP protocol. The current implementation is capable for remote invocations,
  transferring various Serializables and Externalizables via RMI-IIOP protocol.
  It can flatten graphs and, at least for the simple cases, is interoperable
  with Sun's jdk 1.5.

* Qt4 configury switches for OS-X. Additional to the --enable-qt-peer, OS-X
  users with a Qt4 installation can build the qt-peers with the argument
  --with-qt4dir=<Qt4-installation-dir>.

* Significant progress has been made in the implementation of the 
  javax.swing.plaf.metal.* package, with most UI delegates in a working state
  now.  Please test this with your own applications and provide feedback that 
  will help us to improve this package.

* The GUI demo (gnu.classpath.examples.swing.Demo) has been extended to 
  highlight various features in our free-swing implementation. And includes
  a look and feel switcher (Metal default, Ocean or GNU).

Runtime interface changes:

* Changed implementation of VMClassLoader.getPackage(s) : new method
  VMClassLoader.getBootPackages should be implemented by the vm, and sould
  return a string array of boot package names ("java.lang", "java.net", ...).
  Feedback from vm implementors for usability and relevance of the
  getBootPackages method would be greatly appreciated.
  
New in release 0.18 (Sep 6, 2005)

* GNU JAWT implementation, the AWT Native Interface, which allows direct
  access to native screen resources from within a Canvas's paint method.
  GNU Classpath Examples comes with a Demo, see examples/README.
* awt.datatransfer updated to 1.5 with supports for FlavorEvents.
  The gtk+ awt peers now allow copy/paste of text, images, uris/files
  and serialized objects with other applications and tracking
  clipboard change events with gtk+ 2.6 (for gtk+ 2.4 only text and
  serialized objects are supported). A GNU Classpath Examples
  datatransfer Demo was added to show the new functionality.
* org.omg.PortableInterceptor and related functionality in other packages
  is now implemented:
    - The sever and client interceptors work as required since 1.4.
    - The IOR interceptor works as needed for 1.5. 
* The org.omg.DynamicAny package is completed and passes the prepared tests.
* The Portable Object Adapter should now support the output of the
  recent IDL to java compilers. These compilers now generate servants and 
  not CORBA objects as before, making the output depended on the existing 
  POA implementation. Completing POA means that such code can already be 
  tried to run on Classpath. Our POA is tested for the following usager
  scenarios:
    - POA converts servant to the CORBA object.
    - Servant provides to the CORBA object.
    - POA activates new CORBA object with the given Object Id (byte array) 
      that is later accessible for the servant.
    - During the first call, the ServantActivator provides servant for this 
      and all subsequent calls on the current object.
    - During each call, the ServantLocator provides servant for this call
      only.
    - ServantLocator or ServantActivator forwards call to another server.
    - POA has a single servant, responsible for all objects.
    - POA has a default servant, but some objects are explicitly connected 
      to they specific servants.
  The POA is verified using tests from the former cost.omg.org.      
* The javax.swing.plaf.multi.* package is now implemented.
* Editing and several key actions for JTree and JTable were implemented.
* Lots of icons and look and feel improvements for Free Swing basic and
  metal themes were added.  Try running the GNU Classpath Swing Demo in
  examples (gnu.classpath.examples.swing.Demo) with:
  -Dswing.defaultlaf=javax.swing.plaf.basic.BasicLookAndFeel
  -Dswing.defaultlaf=javax.swing.plaf.metal.MetalLookAndFeel
* Start of styled text capabilites for java.swing.text.
* NIO FileChannel.map implementation, fast bulk put implementation for
  DirectByteBuffer (speeds up this method 10x).
* Split gtk+ awt peers event handling in two threads and improve gdk lock
  handling (solves several AWT lock ups).
* Speed up awt Image loading.
* Updated TimeZone data against Olson tzdata2005l.
* Make zip and jar UTF-8 "clean".
* "native" code  builds and compiles (warning free) on Darwin and Solaris.

Runtime interface changes:

* All native resource "pointers" in the VM interface classes are now exposed
  as gnu.classpath.Pointer objects. This might impact runtimes that
  optimize and support java.nio.DirectByteBuffers. Creating these classes
  and accessing the contents as void * pointers for the native reference JNI
  implementation is done through the JCL_NewRawDataObject and JCL_GetRawData
  functions.
* Simplified the Class/VMClass interface.