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Java SE 6 Update 10 venku


Po roce čekání a více než miliónu stažení (viz Java SE 6 Update 10 is out but what does it deliver?) beta verze je venku dlouho očekávaný update číslo deset.

Podle označení by se zdálo, že se jedná pouze o fix pack, nicméně seznam úprav odpovídá spíše pořádnému třesku. Nejzásadnější změnou je nový plug-in systém, který umožňuje lepší běh a deployment appletů a to navíc v hybridním módu, kdy je možné běžící applet přetáhnout na desktop a provozovat jako klasickou desktopovou aplikaci.

  • Improved reliability. The JVM running the applet is
     isolated from the web browser at the operating system level. If
     something should go wrong while running the applet, or if an
     uncooperative applet refuses to shut down, the new Java Plug-In
     detects and handles the error condition gracefully; the web
     browser is unaffected.
  • Built-in JNLP support. The new plug-in offers the
     capability to launch applets directly from JNLP files, unifying
     deployment of Java content both in the browser and out of the
     browser (via Java Web Start). Developers can now reuse JNLP
     extensions for advanced functionality including the JavaFX run-time
     libraries
    , 3D graphics
     via OpenGL
    , and planetary-scale
     terrain visualization
    within applets. Applets can now access
     JNLP APIs for persistent data storage, local file system access,
     and other useful functionality from sandboxed code.
  • Per-applet command-line arguments. JVM command-line
     arguments may be specified on a per-applet basis, providing
     fine-grained control over options such as the heap size and Java
     2D hardware acceleration features. JNLP-launched applets simply
     incorporate the command-line arguments and/or system properties
     into the JNLP file. Old-style applets can embed these arguments
     in the HTML of the web page.
  • Multiple JRE version support. Each individual applet
     instance may request a different JRE version on which to run.
     This feature is designed for enterprise customers which prefer to
     qualify their applets against either a particular JRE version or
     a particular JRE family. Both selection of a specific JRE
     version, or any in a particular family, are supported in the new
     plug-in.
  • Improved Java/JavaScript communication. The bridge between
     the JavaScript engine in the web browser and the Java programming
     language has been completely reimplemented. The new
     implementation is backward-compatible and features improved
     reliability, performance and cross-browser portability, for both
     Java calling JavaScript as well as JavaScript calling Java.
     Formerly Mozilla-specific “LiveConnect” functionality, such as
     the ability to call static Java methods, instantiate new Java
     objects and reference third-party packages from JavaScript, is
     now available in all browsers.
  • Improved user experience. The new Java Plug-In starts
     applets in the background, so the web browser always remains
     responsive. Applets appear on the web page as they become ready
     to run.
  • Improved applet lifecycle management. Calls to the applet
     lifecycle methods init, start,
     stop, and destroy are more
     deterministic and cross-browser behavior has been improved. The
     applet class loader cache and the legacy applet lifecycle,
     required for backward compatibility, are fully supported and the
     behavior of both has been improved.
  • Better large heap support. Historically, the maximum heap
     size that could be specified for applets via the Java Control
     Panel has been limited. This limitation is fixed in the new Java
     Plug-In; applets can now utilize as much heap space as
     command-line applications.
  • Better Windows Vista support. Signed applets running in
     Protected Mode Internet Explorer on Microsoft’s Windows Vista now
     have the same privileges as normal user applications, eliminating
     a portability barrier to this platform.

Nuže předmostí pro JavaFX je položeno, otázka zní není to pozdě? Technologie appletů totiž žehrá na to, že na ní Sun dlouhou dobu kašlal a ta se tak trochu zkompromitovala sama. Uvidíme jestli tato resuscitacek něčemu povede.

Verze na Medium

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