Update Release Notes Index | JDK Documentation |
Java 6 Update 21 Filehippo
Java 6 update 21. The Java Developer Toolkit has also been updated and can be downloaded from this page instead. It raises the version to 6 Update 21 as well and is available for the same platforms. The release notes list the changes in the Java Update. Among the new features is support for additional system configurations including Google. When you find the program Java(TM) 6 Update 21, click it, and then do one of the following: Windows Vista/7/8: Click Uninstall. Windows XP: Click the Remove or Change/Remove tab (to the right of the program). Follow the prompts. A progress bar shows you how long it will take to remove Java 6 Update 21. I attempted to download a java update for windows 7, both 32-bit and 64-bit, after uninstalling the old version. My computer showed the download happening.but nothing happened.
- Java 7 Update 21 is a critical update for April 2013. A total of 42 vulnerabilities have been fixes. The update also contains some non-security patches. 39 of the security vulnerabilities are remotely exploitable meaning that they have a very high severity level.
- Java version 7 update 21 free download - Java Update for Mac OS X 10.3.9, Apple Java for OS X 10.7/10.8, Adobe Photoshop 7.0.1 update, and many more programs.
Update Release Notes Index
Update Release Notes IndexChanges in 1.6.0_21 (6u21)
The full internal version number for this update release is 1.6.0_21-b07 (where 'b' means 'build'). The external version number is 6u21.
OlsonData 2010i
Java SE 6u21 contains Olson time zone data version 2010i. For more information, refer to Timezone Data Versions in the JRE Software .
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Security Baseline
Java SE 6u21 specifies the following security baselines for use with Java Plug-in technology:
JRE Family Version | Java SE Security Baseline | Java for Business Security Baseline |
---|---|---|
6 | 1.6.0_20 | 1.6.0_20 |
5.0 | 1.5.0_22 | 1.5.0_24 |
1.4.2 | 1.4.2_19 | 1.4.2_26 |
In December, 2008, Java SE 1.4.2 reached its end of service life with the release of 1.4.2_19. Future revisions of Java SE 1.4.2 (1.4.2_20 and above) are available to Java for Business subscribers.
For more information about the security baseline, see Deploying Java Applets With Family JRE Versions in Java Plug-in for Internet Explorer .
Additional Supported System Configurations
For Java SE 6u21, support has been added for the following system configurations:
- Oracle Enterprise Linux 5.5
- Oracle Enterprise Linux 5.4
- Oracle Enterprise Linux 4.8
- Red Hat Enterprise Linux 5.5
- Red Hat Enterprise Linux 5.4
- Oracle VM 2.2.0.0.0
- Google Chrome 4.0
Refer to the Supported System Configurations page.
Support for Customized Loading Progress Indicators
With Java SE 6u21, you can now enhance the loading experience of an application by providing a customized loading progress indicator (sometimes referred to as a progress bar) to better inform the end user of how much of the application has been downloaded during startup. See the following topics for more information:
- Customizing the Loading Experience topic in the Java Tutorials
Java Hotspot VM 17.0
Java SE 6u21 includes version 17.0 of the Java HotSpot Virtual Machine with improvements to overall quality and features such as compressed object pointers, escape analysis-based optimization, code cache management, the Concurrent Mark-Sweep garbage collector and its successor, the Garbage First (G1) garbage collector. (G1 continues to be available in Early Access via the -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC
flag. See the G1 technology page for more information.)
Java VisualVM
Java VisualVM based on VisualVM 1.2.2 is included in Java SE 6u21. This release introduces the following features and enhancements:
- HeapWalker performance improvements
- VisualVM-Sampler performance improvements
- BTrace4VisualVM plugin introduces BTrace 1.1
- Profiling engine bugfixes
- Built on NetBeans Platform 6.8
For more information, refer to the VisualVM releases page.
Ensuring Application and Applet Security when Mixing Signed and Unsigned Code
As of the Java SE 6 Update 19 release, when both signed and unsigned code are detected in a Java Web Start application or applet, a warning dialog is raised. As of this release, an enhancement is added allowing some sandboxed jar files to be signed without having to change the JNLP file to request the all-permissions
security model. See Mixing Signed and Unsigned Code for more information.
Security Exception Upon Drag-and-Drop
https://fabriclucky.netlify.app/free-ip-network-scanner.html. Drag-and-drop would, under certain circumstances, result in a null value being passed instead of the expected data.
Java SE 6u21 provides a fix that lets drag-and-drop operations succeed for signed applications or applications with the accessClipboard
permission granted. Aladdin sega genesis free play.
Restoration of the Company Name Property Affecting Eclipse Users
As part of Oracle's rebranding of Sun's products, the Company Name property of the java.exe file, the executable file containing Oracle's JRE for Windows, was updated from 'Sun Microsystems' to 'Oracle' in Java SE 6u21.
After the updated JRE was posted, it was reported that the change affected Eclipse users by causing it to hang when starting Eclipse after updating to the rebranded JRE. A workaround was quickly identified and posted on Eclipse's website, but a wide distribution of the rebranded JRE executable could negatively impact many Eclipse users.
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In consideration to Eclipse and other potentially affected users, Oracle has restored the Windows Company Name property value to 'Sun Microsystems'. This value will be changed to 'Oracle' in JDK 7.
The change affected only the Windows version of the JRE, not the versions for Solaris and Linux. To accommodate this update, the Windows build version will increase from Java SE 6u21-b06 to Java SE 6u21-b07.
Java Version 6 Update 20
Update for JDK Installation Failure for Brazillian Portuguese
The JDK installation failure for Brazillian Portuguese issue has been fixed in this release.
The installation of the Java SE 6u21 JDK package resulted in a failure for Brazillian Portuguese locale with the generation of 'Error applying transforms. Verify that the specified transform paths are valid' error message. However, this was not an issue for installing the JRE, since the JRE was localized for Brazillian Portuguese.
Bug Fixes
Java SE 6 Update 21 does not contain any additional fixes for security vulnerabilities to its previous release, Java SE 6 Update 20. Users who have Java SE 6 Update 20 have the latest security fixes and do not need to upgrade to this release to be current on security fixes.
Java 6 Update 21 64 Bit Download For Windows 10
For other bug fixes, see the Java SE 6u21 Bug Fixes page.