Java Runtime Environment 60 Update 25
Java? Runtime Environment 6.0 Update 25 
Las aplicaciones programadas en lenguaje Java son muchísimas, pero necesitan una máquina virtual para ejecutarse.
Java Runtime Environment es la máquina virtual de Java más básica. Sin ella, ningún programa Java lograría arrancar, y lo mismo se aplica a los applets de las páginas web. Es un componente tan imprescindible como .NET o las librerías DirectX.
El instalador de Java Runtime Environment ? o JRE ? se encarga de integrar Java con el sistema y los principales navegadores (como Internet Explorer o Firefox). Sólo tienes que pulsar Siguiente hasta que la instalación de Java Runtime Environment se haya completado.
Si necesitaras configurar Java Runtime Environment, encontrarás, en el Panel de Control, un icono dedicado exclusivamente a Java.
- Notas: Deshabilitado el autoinicio de la utilidad de java cada vez que arranca el sistema, deshabilitada la busqueda automatica de actualizaciones, el instalador desatendido soporta la actualizacion de versiones anteriores.
Sistema operativo: Win2000/NT/XP/2003/Vista/7
Update Release Notes
Update Release Notes Index
Java? SE 6 Update 25
The full internal version number for this update release is 1.6.0_25-b06 (where "b" means "build". The external version number is 6u25.
Highlights
This update release contains important enhancements for Java applications:
Improved performance and stability
Java HotSpot? VM 20
Support for Internet Explorer 9, Firefox 4 and Chrome 10
Improved BigDecimal
Olson Data 2011b
Java SE 6u25 contains Olson time zone data version 2011b. For more information, refer to Timezone Data Versions in the JRE Software .
Security Baselines
The security baselines for the Java SE platform at the time of the release of Java SE 6u25 are specified in the following table:
JRE Family Version Java SE
Security Baseline Java for Business
On October 30, 2008, Java SE 1.4.2 reached its end of service life with the release of 1.4.2_19. Java SE 5.0 reached its end of service life on November 3, 2009, with the release of 5.0u22. Future revisions of Java SE 1.4.2 (1.4.2_20 and above) and Java SE 5.0 (5.0u23 and above) are available to Java for Business subscribers.
For more information about security baselines, see Deploying Java Applets With Family JRE Versions in Java Plug-in for Internet Explorer .
Additional Supported System Configurations
For Java SE 6u25, support has been added for the following system configurations:
Oracle Linux 6
Oracle Solaris 11 Express 2010.11
Windows 7 with SP1
Windows 2008 R2 with SP1
Internet Explorer 9
Firefox 4
Chrome 10
VirtualBox 4
Refer to the Supported System Configurations page for more information.
Java Hotspot VM 20
Java SE 6u25 includes version 20 of the Java HotSpot Virtual Machine which contains improvements to performance, reliability and diagnostic information.
A new feature in this version of HotSpot is "tiered" compilation in the Server VM that enables it to start quickly as does the Client VM, while achieving superior peak performance. This feature is enabled by specifying -server and -XX:+TieredCompilation command options.
The Garbage First (G1) garbage collector continues to advance with Java SE 6u25, although it remains an experimental option.
HotSpot diagnostic information has been expanded in several ways:
Tracking of cumulative Java heap bytes allocated on a per-thread basis
On OutOfMemoryError, indication of the faulting thread in the heap dump
Improved handling of unexpected exceptions in application native code
Better indication of native heap exhaustion
More details in hs_err files
Performance Improvement to BigDecimal
Improvements have been made to class BigDecimal enhancing its performance by thirty percent. BigDecimal is enabled by specifying -XX:+AggressiveOpts command option.
Performance Improvement to java.util.logging.LogRecord
The performance of the class java.util.logging.LogRecord has been enhanced. This enhancement improves the efficiency of including source class and method names in java.util.logging log records.
Bug Fixes
Java SE 6u25 does not add any fixes for security vulnerabilities beyond those in Java SE 6u24. Users who have Java SE 6u24 have the latest security fixes and do not need to upgrade to this release to be current on security fixes.
For other bug fixes, see the Java SE 6u25 Bug Fixes page.
Known issue
If you use the setInstallerType("kernel" API from the Java Deployment Toolkit Script to request a Java SE 6u25 Java Kernel installation, currently it will return the Java SE 6u24 Java Kernel installer.
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