- #HOW TO ENABLE JAVA IN FIREFOX ON LINUX MACHINE HOW TO#
- #HOW TO ENABLE JAVA IN FIREFOX ON LINUX MACHINE CODE#
- #HOW TO ENABLE JAVA IN FIREFOX ON LINUX MACHINE WINDOWS#
And so, the browsers that come to Java enabled, can run Applet without any hassle. Browsers come with a Java plugin that allows the execution of an Applet on it. So, to run Applet, we need a Java-enabled browser.
#HOW TO ENABLE JAVA IN FIREFOX ON LINUX MACHINE HOW TO#
![how to enable java in firefox on linux machine how to enable java in firefox on linux machine](https://blog.mozilla.org/security/files/2012/10/ctp-in-action1.png)
#HOW TO ENABLE JAVA IN FIREFOX ON LINUX MACHINE CODE#
Special thanks to Mook for helping me find some of the code and preferences. It just loads plugins from the /Library/Internet Plugins directory and ~/Library/Internet Plugins directory. That’s how Firefox loads plugins.Īs a side note, things are much easier on Mac. Firefox add-ons can add plugins to Firefox by putting them in a directory called plugins. If you still see plugins loaded, they can be coming from two other places, either the plugins directory where Firefox is located (unlikely) or they can be coming from an add-on. If all went well, you shouldn’t see any plugins loaded in Firefox. I set them all to 100.0.Īfter changing that, now type about:plugins again. So if you want to prevent them from being loaded, you can just set the versions very high. These preferences are not booleans, though, they are minimum versions. ( You can click here to see the code that does this if you want.) I’m not going to go into detail as to how this happens, but I will answer the obvious question – “How do I prevent these from being loaded?”įirefox has four preferences that control the loading of these plugins:
#HOW TO ENABLE JAVA IN FIREFOX ON LINUX MACHINE WINDOWS#
The plugins it looks for this way are Java, Adobe Acrobat, Quicktime and Windows Media Player. That brings up the second way Firefox locates plugins. You can see this change immediately if you type about:plugins.Īfter typing about:plugins, you might still see plugins that seemed to be referenced in the registry and wonder how they got there. Firefox will no longer read plugins from the registry. So then an obvious question might be “how do I prevent the loading of plugins from the registry?” Instead of deleting all the references to MozillaPlugins, you can just go to about:config and set the preference to false. That explains why even though there is only one entry for Java (C:\Program Files (x86)\Java\jre6\bin\new_plugin\npjp2.dll), it still loads the other Java plugin in that directory (npdeployJava1.dll). Most vendors provide a path to the entire DLL, so Firefox just cuts off the filename and reads all plugins in that path. This specifies the directory where the plugin is located. So what do these keys look like? For Adobe flash, they add the key The important value that’s specified in the key for the plugin is Path. You can search on MozillaPlugins using the registry editor to see the various locations where these keys are added.
![how to enable java in firefox on linux machine how to enable java in firefox on linux machine](https://2.bp.blogspot.com/-GHjcGgD53Aw/W_1MxSl25AI/AAAAAAAAB8o/yfjyyUZJtxIdKkr4bOYEI6UaGm7J6Ti0QCLcBGAs/s1600/firefox-logo.png)
HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins HKEY_CURRENT_USER\Software\MozillaPlugins Here are some example locations from my machine: If an app installs a plugin in a central location and wants Firefox to find it, it just adds a registry key. The first method we’re going to talk about is using the Windows registry. It can be a security issue because websites can know paths on your machine by looking at filenames in the ugins array.) (Don’t forget to toggle it back when you are done. If you’re wondering where they are loaded from, you can go to about:config and set the preference plugin.expose_full_path to true and it will show all the different paths from which Firefox has loaded plugins. You’ll see a list of all the plugins that are loaded in your browser. First, though, type about:plugins in your browser. That method became quite cumbersome, so new ways were invented for the browser to find plugins. When you installed a plugin, it placed a DLL or shared library into that directory. Back in the day, that was where all plugins were loaded from. You probably know that there is (or at least used to be) a plugins directory in the same location where the Firefox executable is located.
![how to enable java in firefox on linux machine how to enable java in firefox on linux machine](https://upload.wikimedia.org/wikipedia/commons/thumb/a/a0/Firefox_logo%2C_2019.svg/1200px-Firefox_logo%2C_2019.svg.png)
Note that this post is primarily about loading plugins on Windows. In particular, I learned a lot how to stop Firefox from loading plugins from different locations. While debugging getting plugins working again with the CCK Wizard (it broke when Firefox removed platform specific directories in extensions), I learned a lot about how plugins load within Firefox.