How do I enable Java in my web browser?
Click Java (TM) Platform plugin (Windows) or Java Applet Plug-in (Mac OS X) to select it; Check that the option selected is Ask to Activate or Always Activate or on older Firefox versions, click on the Enable button (if the button says Disable, Java is already enabled) Safari
How do I disable Java in my web browser?
Starting with Java Version 7 Update 10, a new security feature has been added to Java. Some web pages may include content or apps that use the Java plug-in, and these can now be disabled using a single option in the Java Control Panel.
How do I enable Java through the Control Panel?
The Java content in the browser is disabled in the Java Control Panel. If Java is already installed but applets do not work, you may need to check and see if Java is enabled. SOLUTION To see whether your browser is configured to use Java, check your settings in the Java Control Panel. Find the Java Control Panel » Windows » Mac OS X
Disable Java Version 7 Update 10 from the Control Panel in Windows or System Preferences in macOS. Windows. Navigate to the Control Panel. Note: For help navigating, see Get around in Windows. In the Search Control panel, type Java Control Panel into the "Search" field, and click the Java icon to open it.