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Java on Mac OS X (Mountain) Lion (10.7.x & 10.8.x)

This page does not apply to (Snow) Leopard (10.5.x and 10.6.x).

If you do not see the following when you click Check your Java installation! (same link on homepage),
then you should review the rest of this page, which previews the process required to run a Java applet.

• The testing process may take up to 30 seconds after you click the blue link, above; please be patient. •

Missing Plug-in



Choose and click Launch Applet on the home page (upper right).




Missing Plug-in
If this icon appears at the center of the applet space, click it.


Install Java SE 6
Click [ Install ];   see http://support.apple.com/kb/DL1572
(Automatically downloads and installs software from this link.)


Apple Software
Click [ Agree ] …


Installing


Success


Missing Plug-in
After installing Apple’s Java, click the identical icon again.
(See paragraph two in the Java for OS X support document.)


Inactive Plug-in
Click this new icon.


Java Plug-in
Click [ More Info… ], then [ Agree … ] (see below).


Download Java


Double-click the downloaded .dmg file (see below).
.dmg file


Oracle Java


Oracle Java installer


Oracle Java installer


Oracle Java installer


Inactive Plug-in
You will still see this icon; quit and restart your browser.


Inactive Plug-in

Choose and click Launch Applet on the home page (upper right).
Several seconds before the Gravity Sim applet loads successfully, you should now see this.




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