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Oracle has just released the Java SE 6 Update 21. This version is compatible with new system configurations :
- Oracle Enterprise Linux 5.5, 5.4, 4.8
- Red Hat Enterprise Linux 5.5, 5.4
- Oracle VM 2.2.0.0.0
- Google Chrome 4.0
This version integrates the Java Hotspot VM 17.0. There are several improvements, for example in compressed object pointers, escape analysis, code cache management, Mark-Sweep and G1 garbage collection algorithms. You can enable G1 with
-XX:+UnlockExperimentalVMOptions -XX:+UseG1GC
This version also integrates the latest version of Java Visual VM, the 1.2.2. For more informations, consult the VisualVM official site.
There is an important bug fix for drag and drop. There are no security updates on this update. The list of BugFixes are available here.
You can now add a progress indicator in Applet and Java Web Start applications really easily. For information, you can consult this list of tutorials.
For complete information about the release, consult the release notes of Java SE 6 Update 21.
From http://www.baptiste-wicht.com/2010/07/java-se-6-update-21-released/
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