If you change your Java JRE (J ava R untime E nvironment), you may have to completely uninstall Firefox and reinstall it to get Java working again. Click About Firefox at the end of the list. Click (open help menu) on the bottom right of the dialog box. To find out what version of Firefox you are running: Click (open menu) on the top right.When selected these tiles will change focus to the address bar. Amazon and Google appear as Top Sites tiles on the Firefox Home (New Tab) page. Firefox 63 comes with search shortcuts for Top Sites.Find easy-to-follow tutorials and helpful tips to help you master the structure and syntax of the programming language. These extensions typically include a Whitelist or Allow JavaScript button for each website you visit, as well as a whitelist interface in their options in the Add-Ons menu to add websites by URL. Firefox extensions like NoScript, Ghostery and Just Disable Stuff block all JavaScript and Java applets not on their whitelists.That being said, it is important to have Java installed or enabled on Firefox. Java is a very important programming language that many websites and applications use with more being created daily.
