Q: How do I find out which version of Java is the system default?A: If you have not yet installed Apple's Java Mac OS X 2012-006 update, then you are still using a version of Apple Java 6 that includes the plug-in and the Java Preferences app.

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For more information, see Determining the Default Version of the JDK. From System Preferences, launch the Java Control Panel by clicking the Java icon in the Other section. in the Temporary Internet Files section of the General tab.

In the Temporary Files Settings window, click Delete Files....

A: Every time you launch a Java applet or a Java Web Start application, the system first launches your program and then, in the background (so that performance of your Java application is not impacted), it determines if it has checked in the last 7 days for a Java update.

If an update is available, a Software Update window appears.

From the Delete Files and Applications dialog, select Cached Applications and Applets and click OK to clear those files from the cache.

To clear the applet and Web Start cache from a Terminal window, use the following command: Q: How are Java updates managed on the Mac?You might want to finish your work before clicking Install and Relaunch.At the end of the installation process, the installer notifies you if Java content is disabled in web browsers, and provides instructions for enabling it.Apple has enabled a new default security oriented featured called System Integrity Protection, often called rootless, in Mac OS from versions 10.11 onward.The rootless feature is aimed at preventing Mac OS X compromise by malicious code, whether intentionally or accidentally, and essentially what SIP does is lock down specific system level locations in the file system while simultaneously preventing certain processes from attaching to system-level processes.When you run Java application from the command line, it uses the default JDK.