How to install the Java plugin for Firefox?

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Many web pages use Java applets for interactive content such as online games. Before Firefox can run Java applets you must have the Java plugin properly installed and enabled. Java is a programming language that can run on Windows, Mac, Linux, and other computer systems. This article will help you install or update Java and get it working in Firefox.

Java is not the same as JavaScript (see this article for information about JavaScript). Go to the download page at java.com. Click the button. Click the button to download the Java installer to your computer. After the download is complete, close Firefox. Open the file you downloaded to start the Java installation.

Java for Windows includes an automatic update feature that periodically checks for updates and notifies you when an update is available for installation. You can view or change your update settings in the Update tab of the Java Control Panel, where you can also manually check for updates. For more information,...

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Installing the IcedTea Java plugin:

To install the IcedTea Java plug-in, open a terminal and type:

sudo apt-get install icedtea-7-plugin

In a terminal:

mkdir ~/.mozilla/plugins

Remove the IcedTea plugin, if it has been installed.

sudo apt-get remove icedtea6-plugin

Remove a former version of the Java plugin (may or may not be present)

rm ~/.mozilla/plugins/libnpjp2.so

Now you can install the plugin, by creating a symbolic link (you tell Firefox where the plugin is located). For 32-bit Java, use

ln -s /usr/lib/jvm/jre1.7.0/lib/i386/libnpjp2.so ~/.mozilla/plugins/

For 64-bit Java use

ln -s /usr/lib/jvm/jre1.7.0/lib/amd64/libnpjp2.so ~/.mozilla/plugins/

Confirm that the JRE has been successful by using the official Oracle website.

Source: Java...

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Java plug-in does not work in Firefox after installing Java

This article applies to:

Browser(s) Firefox Java version(s): 7.0, 8.0

Firefox limits NPAPI support (technology required for Java applets)

64-bit Firefox

The 64-bit version of Firefox does not support NPAPI plug-ins, including Java.

Firefox 52 and above

Beginning with Firefox 52 (released March 2017), plug-in support is limited to Adobe Flash, and drops support for NPAPI, impacting plugins for Java, Silverlight, and other similar NPAPI based plugins.

If you have problems accessing Java applications using Firefox, Oracle recommends using Internet Explorer (Windows) or Safari (Mac OS X) instead. Developers and System administrators looking for alternative ways to support Firefox users should see this blog regarding Launching Web Start applications.

Firefox 52 ESR 32-bit...
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How do I download and install Java online for Firefox on Windows?

This article applies to:

Platform(s): Windows 2008 Server, Windows 7, Windows 8, Windows XP, Windows Server 2012, Windows Vista, Windows 10 Browser(s) Firefox Java version(s): 7.0, 8.0 The procedure to install Java broadly consists of: Download and Install Test Installation » Windows System Requirements

Note: Installing Java requires that you can gain administrator access to Windows on your computer.


It is recommended, before you proceed with online installation you may want to disable your Internet firewall. In some cases the default firewall settings are set to reject all automatic or...

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Many web pages use Java applets for interactive content such as online games, WebEx (Online meeting), etc.,. By default all the browsers disabled the plugin due to security issue and still you want to enable to access the trusted web sites. We can enable it on browser by following below procedures. Make sure you system should have installed Oracle JAVA before proceeding to enable the JAVA Applet.

Method 1 : Enable Java plugin Support on Firefox through Oracle Java

1) Install Oracle Java

Make sure you system should have installed Oracle JAVA before proceeding to enable the JAVA Applet.

# java -version java version "1.8.0_74" Java(TM) SE Runtime Environment (build 1.8.0_74-b02) Java HotSpot(TM) 64-Bit Server VM (build 25.74-b02, mixed mode)

2) Locate Firefox

First we need to locate the Firefox installation location to create plugin directory.

# whereis firefox firefox: /usr/bin/firefox /usr/lib/firefox /etc/firefox...
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Do you want the JDK or the JRE? Anyways, I had this problem too, a few weeks ago. I followed the instructions here and it worked:

http://www.backtrack-linux.org/wiki/index.php/Java_Install

NOTE: Before installing Java make sure you kill Firefox.

root@bt:~# killall -9 /opt/firefox/firefox-bin

You can download java from the official website. (Download tar.gz version)

We first create the directory and place java there:

root@bt:~# mkdir /opt/java

root@bt:~# mv -f jre1.7.0_05/ /opt/java/

Final changes.

root@bt:~# update-alternatives --install /usr/bin/java java /opt/java/jre1.7.0_05/bin/java 1

root@bt:~# update-alternatives --set java /opt/java/jre1.7.0_05/bin/java

root@bt:~# export JAVA_HOME="/opt/java/jre1.7.0_05"

Adding the plugin to Firefox.

For Java 7 (32 bit)

root@bt:~# ln -sf $JAVA_HOME/lib/i386/libnpjp2.so /usr/lib/mozilla/plugins/

For Java 8 (64 bit)

root@bt:~#...

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Install Firefox Browser Oracle Java Plugin

The Quick-Guide Shows You Exactly How-to Install the Firefox Java Oracle Plugin on Linux Systems.

The Process is Necessary to Properly Achieve a Oracle Java JRE/JDK 6/7/8 Installation Linux Distributions.

The Java Plugin is Indispensable for Accessing Java Content on Firefox and also Google-Chrome Browsers.

On the How-to Install Oracle Java Firefox Plugin Guide are Described Both Installation Choices: Local and System Wide.

Local Installation:

Access Target Folder

cd ~/.mozilla/plugins

If plugins Dir Not Existing then:

mkdir ~/.mozilla/plugins

Then Skip the 2 unlink below…

Make a Symbolic Link

unlink libjavaplugin.so unlink libnpjp2.so ln -s [/PATH/2/JDKorJRE]/jre/lib//libnpjp2.so .

Example:

ln -s /usr/lib/jvm/jdk1.7*/jre/lib/amd64/libnpjp2.so .

System Wide Installation:

Access Target Folder

cd /usr/lib/mozilla/plugins

Make a Symbolic...

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This page describes how to install and register the Java plugin.

Plugin Installation

When you install the Java platform, the Java plugin file is included as part of that install. If you want to use Java within Firefox, you need to manually create a symbolic link from the plugin file in the release to one of the locations that Firefox expects. To make the plugin available to all users, create the link inside of the Firefox application's directory, in the plugins subdirectory. Alternatively, you can create the symbolic link in your home directory, in ~/.mozilla/plugins. In the remainder of this document, the text, "Firefox plugins directory", implies either of these locations.



This release provides the Next-Generation Java plugin. If you have been using the classic plugin, see "Notes" for further information.

The location of the plugin file for Linux varies according to the processor architecture of the underlying platform, as shown in the...

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Related to : How to Install a Java Plugin for FirefoxHow to Install Java Plugin in Firefox 1.5.0.12 Java Java is a web-based application that allows for interactive multimedia applets to be loaded on certain websites. Java, while an application environment in its own right, also must be installed for each browser via a plugin. If you are using Mozilla Firefox 1.5.0.12, you will have to install the generic Firefox plugin for Java. You will not find problems when installing the plugin because of your Firefox version.Difficulty:EasyInstructions Go to the Java website in your Firefox browser (see Resources). Click "Free Java Download."
Click "Download" and then click "Install."
Click "Edit Options" on the Firefox protection notice. Click "Allow" in the box that appears and then click "Clos
How to Install a Java Plugin to Firefox Ubuntu 9.10 Java Java is a programming language designed by Sun Microsystems. It is used for desktop applications as well as online games,...
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I spent too much time trying to get the java plugin 64 bit to work with firefox on Fedora 17. Something seems to be very wrong with the standard plugin setup. These instructions worked for me, hopefully these will help others doing the same:

http://www.mjmwired.net/resources/mjm-fedora-f16.html#java

Written on 18 October 2011

The standard installation of Fedora should install OpenJDK (based on the Sun Java). However if not, it can be installed using YUM:

sudo yum install java-1.6.0-openjdk java-1.6.0-openjdk-plugin

With OpenJDK installed, Java application and Web applets should automatically work. Unfortunately some applets may not run properly and the OpenJDK might have some limitations. Majority of user should find OpenJDK perfect for everyday use.

Using Sun (Oracle) Java Instead

If you require Sun (Oracle) Java or if OpenJDK does not work properly, you can download Sun (Oracle) Java and use it in Fedora.

Download the Java package...

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PLEASE NOTE, the java download filename and VERSION changes often so the below filename may NOT be what you have just downloaded. In other words, please use YOUR filename in the commands below and NOT the one that I reference to otherwise you will not get this working.

In addition the below TIP is for fedora core 1,2,3. For Fedora Core release 4 do this https://www.linux-noob.com/forums/index.php?showtopic=1707 and scroll down to "Now lets install Java", thats the bit you need.

first of all, why am i doing this small howto, well the 'install missing plugin' for java in firefox didn't work for me, it listed the 'manual installation' icon instead.

so this is what i did in Fedora Core Release 3 using Firefox 1

go to suns site and get the latest java rpm

http://javashoplm.sun.com/ECom/docs/Welcom...sactionId=noreg

download the linux rpm

once done, install it by doing this (login as root by typing su - in a console, thats a 'su' followed...

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To enable Oracle’s Java plugin in your Linux browsers, just copy these lines into a script, and run it!

JAVA_HOME=/usr/lib/jvm/jdk1.7.0
MOZILLA_HOME=~/.mozilla
mkdir $MOZILLA_HOME/plugins
ln -s $JAVA_HOME/jre/lib/i386/libnpjp2.so $MOZILLA_HOME/plugins

Note: You may need to change the value of JAVA_HOME so that it correctly points to your installation of the JDK. 64-bit users will need to change the final line to:
ln -s $JAVA_HOME/jre/lib/amd64/libnpjp2.so $MOZILLA_HOME/plugins

If you’re a newbie, here’s how to run the script:

Using your favorite editor, paste the contents of the script into a new file. Find out where Oracle Java is installed. This location has the directories “bin”, “lib”, and “jre”, among others. Replace the value of JAVA_HOME with the path to this folder, and save the file. This step applies if you’re using the JDK. If you’re only using the JRE, let JAVA_HOME point to the jre installation directory (which...
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Before You Start

Flash

For instructions on how to install the Flash plugin, see the Flash section on the Restricted Formats page.

Java

For instructions on how to install the Java plugin for Firefox, see Java.

Adobe Reader

For instructions on how to install Adobe Reader plugin for Firefox, see the Adobe Reader wiki page.

Real Player

For instructions on how to install the Real Player plugin for Firefox, see the RealPlayer page.

Totem Plugin

Totem, Ubuntu's default video player, supports both the gstreamer (default) and xine multimedia frameworks.

On 6.06 LTS (Dapper), the plugin depends on the multimedia framework you use. If you use totem-gstreamer (the version of Totem that uses the gstreamer back-end), install the totem-gstreamer-firefox-plugin package. If you use totem-xine, you should install the totem-xine-firefox-plugin package.

On 6.10 (Edgy), simply install the totem-mozilla...

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hello and welcome to Webune Support Forums. if you are a customer of Webune, you know sometimes we have to access our servers remotely and it helps when you have a gui and a browser to securely monitor any web panel administration through a secured machine. that is why are we are writing this short tutorial on how you can add or install the java JRE platform plugin for firefox running on linux. for this example, we are using this scenario:

OS: Linux Fedora Core 7
Browser: Mozilla Firefox
Sun Java Version: jre-1_5_0_20-linux-i586-rpm.bin

the first step is to start a console session. so start your shell. login as super user:

SHELL COMMAND:

su

create a java directory in usr/
SHELL COMMAND:

mkdir /usr/java

[NOTE: if the java directory already exists, skip this step]

go to the new java directory
SHELL COMMAND:

cd /usr/java

i am using firefox to donwload, so by default when i go to the sun website,...

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When you install the Java platform, the Java plugin file is included as part of that install. If you want to use Java within Firefox, you need to manually create a symbolic link from the plugin file in the release to one of the locations that Firefox expects. To make the plugin available to all users, create the link inside of the Firefox application's directory, in the plugins subdirectory. Alternatively, you can create the symbolic link in your home directory, in ~/.mozilla/plugins. In the remainder of this document, the text, " Firefox plugins directory ", implies either of these locations.

This release provides the Next-Generation Java plugin. If you have been using the classic plugin, see the Notes for further information.

The plugin file for Linux is located here:


/lib/i386/libnpjp2.so

If you are using a 32-bit Firefox, you should use the 32-bit Java Plugin (from the lib/i386 directory). To...

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