Software :: Want To Run Java Applets In Firefox 3.6.17 - Fedora 14

Jun 24, 2011

Code:

Tells me to go to the plugins folder under firefox. I look in /usr/lib/firefox-3.6 and I dont have a folder named plugins. But firefox does display a list of plugins from Tools>Addons>Plugins. The list displayed by the browser does not include java.

oracle tells me to make a link from this non existent folder to the jre and make a link to lib/i386/libnpjp2.so

I've done a find / and nowhere on the system is there a libnpjp2.so

There are a bunch of files similar to this in

Code:

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Ubuntu :: Java Applets In Firefox Stay Running?

Jul 12, 2010

All day today, my laptop has been absurdly hot.The core temperatures were exceeding 70.0C even though it was on a cooling pad and I had disabled wireless, lowered the screen brightness, and put the CPU on Powersave. (For comparison, the temp usually stays at 45.0C if I do all this)

Finally, I decided to check htop, and I found IcedTea Plugin at the top with 99% CPU usage. This is used to run embedded Java applets (Java, not Javascript). Curiously, no Java applets were running at that time.Now skip ahead an hour to when I finally discover that the IcedTea Plugin was left over from earlier because it didn't stop running when it was supposed to. Looking online, I see several complaints about Java being very taxing on the CPU in Ubuntu, but I don't see anything about Java applets continuing to run after they're gone.

Can anyone who has Java installed confirm that this happens on their system?

1. Open htop. Search for "icedtea" to make sure it isn't already running. Then click on "CPU%" to sort the list.
2. Open this page in Firefox: www.java.com/en/download/help/testvm.xml
3. Check htop. Is IcedTea climbing to the top? (if you have Java, it likely will, because this is a common issue)
4. Navigate off of the Java.com page by closing the tab or clicking Back.
5. Here's what I want to know. Check htop again. Is IcedTea still there?
6. Restart Firefox to get rid of IcedTea.

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Oct 25, 2010

Firefox is crashing whenever I go to a page with a java applet such as this one [URL]... I get the following output in the command line:

GCJ PLUGIN: thread 0xb5e191f0: NP_Initialize
GCJ PLUGIN: thread 0xb5e191f0: NP_Initialize: using /usr/lib/classpath/gappletviewer.
GCJ PLUGIN: thread 0xb5e191f0: NP_Initialize return
GCJ PLUGIN: thread 0xb5e191f0: GCJ_New
GCJ PLUGIN: thread 0xb5e191f0: plugin_data_new

[Code]...

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Mar 6, 2010

I am using Ubuntu 8.10. All the java programs run perfectly fine in Geany. But when I try to run java applets in web browsers it did not run. I have tried running it in Opera and FireFox. I have written a simple program which display "hello world" in browsers. When I refresh the page it displays the text for about 2 or 3 seconds and after that it disappears.

Are there any other ways to run java applets?

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Nov 17, 2010

I always have trouble with java applets in Firefox, any time I open one the whole browser just seems to lock up. Any pointers for making them run properly? I'm running Ubuntu 10.04 and I have the IcedTea plugin.

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Mar 6, 2010

i am running Oracle EBS R12.1.1 on Linux RHEL 5.3 ,I am not able to run java applets on the same . I installed latest rpm of jre-1.6.0_18 , and it is there in /usr/java/jre1.6.0_18 but when i am searching by command its showing

[Code]....

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Feb 27, 2011

Why are applets not working on Squeeze? They were working in Lenny and work in Windows 7.

apt-cache policy openjdk-6-jdk icedtea6-plugin
openjdk-6-jdk:
Installed: 6b18-1.8.3-2

[code]...

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May 1, 2010

yesterday when 10.04 got released i decided i'd install it and try it out, when i tried to run a java applet on it (runescape for example) the CPU usage got really high (around 100%), is that normal?

Info about my processor if you need:AMD Athlon(tm) 64 X2 Dual Core Processor 5000+ 2,61 GHz.This is my first time ever using ubuntu.

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Oct 8, 2010

When I look at my content plugins in Firefox and the list of IcedTea plugins is 29 items long. Is this my problem or do Java Applets just not work in Lynx?

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Jan 10, 2010

I have gnome, iceweasel, and java installed. Java works fine from the command line, but not on sites like the one below.

[URL]

I have java enabled. I'm running squeeze. The 'add-ons' dialog in iceweasel lists the following:

Code:

Java(TM) Plug-in 1.6.0_16

this is the output from the Java console when trying to load the applet:

Code:

load: class AppletGui not found.
java.lang.ClassNotFoundException: AppletGui
at sun.plugin2.applet.Applet2ClassLoader.findClass(Applet2ClassLoader.java:152)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)

[code]....

I think the problem may have to do with where it says "Caused by: java.net.ConnectException: Network is unreachable" but I'm not sure what that means.

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I'm using Iceweasel on Debian, and my java applets won't work. They used to work fine so I don't understand what happened to them. I installed the latest java jre from Sun and it made no difference. Java plugin seems to work (at least the javascript part) but it can't seem to download applet's. I tried running one locally (ran on of the example applet that came with the Sun jdk, but they won't work on the web) the java console pops up with these errors.

Quote:

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Jan 4, 2010

I know how to deal with a mouse click event like so:

Code:

But was happens when I am dealing with mouse dragging? Will my implementation of mouseDragged() get called for every pixel moved? So I just getX() and getY() like with a mouse click?

Also, in order to know when mouse dragging stops and starts, do I also have to put code in mousePressed and mouseReleased?

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Jan 14, 2010

So, when I program my Java applet I am expected to use an event based model, where I run functions in response to mouse clicks and so forth, and I am supposed to return quickly so that the applet can continue looping. But what if I want certain functions to run by themselves on a regular schedule (like every 200 ms or so) without blocking mouse events, repaints, and so forth?

I looked at the source code of one Java applet I found, and it accomplished this by creating extra threads. I was wondering if creating extra threads was the only way to accomplish that, or if there was some more proper way to do it built into the Applet somehow.

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My sound is otherwise working fine, but for some reason i'm not getting any sound when running java applets. This issue is very important to me, i would -really- like to get the sound back on this applet.it's a java runtime environment applet, running in embedded in firefox. Somehow, the systems isn't detecting it as a application outputting sound.

i tried uninstalling the sound manager application via synaptic, selected the 'completely remove' option, and wound up uninstalling essentially the entire OS last weekend. i'd like to not repeat that mishap, as i lost all my data.

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Mar 3, 2010

I am running Jaunty 9.04 with Firefox 3.0.18.

Here is the output of $ java -version:

java version "1.6.0_16"
Java(TM) SE Runtime Environment (build 1.6.0_16-b01)
Java HotSpot(TM) 64-Bit Server VM (build 14.2-b01, mixed mode)

I have tried the solution to this thread: [URL] but to no avail. And this thread: [URL]doesn't help either.

The website I am trying to view the applet on is: [URL]

Nothing comes up saying a missing plug-in needs to be installed, but a small, blank window appears with a title of "Java" which can't be closed and has to be killed.

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I want to replace my windows clients with ubuntu clients, i have a problem when run Oracle Application 10g on Firefox . I am using ubuntu 10.10 firefox ask to download plug-ins and can not find or install them. the applets failed to load. I hear about there is JRE replace Jinititor on windows

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I have recently switched from suse 9.2 32-bit to 11.3 64-bit (luckily I'm still mantaining the old machien for a while).I'm noticing that the graphics quality of the applets displayed by the new firefox (3.6.12 bundled with the opensuse distro) is significantly worse (mainly concerning fonts which look very poor) then the one I used to have on the old system.I see that the new firefox uses IcedTea 1.9.2. The old system was using, I guess, something called libjavaplugin_oji.Is this a known problem with IcedTea and is there a recommended replacenent ?

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Code: ~ $ /usr/java/jre1.6.0_25/bin/java -showversion Error occurred during initialization of VMjava/lang/NoClassDefFoundError: java/lang/Object

That's the error I get. When trying to run a java app with the firefox plugin, the browser simply crashes if it's the 64bit java or tells me it's not installed if it's the 32bit version.

I'm at a loss as to what to do. I think it has something to do with leftover gunk from a previous version I misinstalled(Is that even a word?) Anyway, the only thing that google could come up with was a solution for windows which laid blame on Bill Gates for having a bunch of pf (java prefetch) files stuffed into c:windows for no apparent reason. The solution was to delete them, but I can't seem to find the java prefetch folder in linux. The method I used is downloading the rpm from java.com the rpm2tgz then installpkg then cp libnpjp2.so to firefox plugins folder.

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May 29, 2010

Has anyone here gotten the Sun Java plugin (1.6.0_20) working in Firefox under F13? I'm using the Firefox 3.6.3-4 RPM supplied by F13, and I created the link in /usr/lib/mozilla/plugins to ${JAVA_HOME}/jre/plugin/i386/ns7/libjavaplugin_oji.so as I've always done, but the plugin fails to show up when I check the plugins in Firefox. I installed some other plugins in /usr/lib/mozilla/plugins and they work fine, only Java doesn't work. It's weird because I've never had a problem getting the Java plugin to work in Firefox before this, and I've done it a million times.

I don't have the Fedora-supplied java packages installed, so it's not a issue of conflicting plugins. And the plugin does work in Opera. I also tried the 1.6.0_18 plugin from Sun, and that didn't work in Firefox either, though it works in F11. I can't figure out what's causing this just in F13. So far this is the only problem I've had in F13, everything else has worked great.

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Aug 21, 2010

firefox plugin for java. I searched the threads but no joy. this is what I have:

Code:
[root@...]# rpm -qa | grep java
tzdata-java-2010j-1.fc13.noarch
java_cup-0.11a-4.fc13.noarch

[Code]....

and when I type in firefox: <about: plugins>; there are no references to java.

what's the deal with this line in the code??? --> system-switch-java-1.1.5-1.fc12.noarch?

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However it should be installed because of the following output:

Code:

So I thought that maybe the wrong Java version is used, but it doesn't seem to be so:

Code:

There are 4 programs which provide 'java'.

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ls /usr/lib64/firefox-3.5.3/
application.ini chrome extensions LICENSE README.txt updater.ini
blocklist.xml components firefox modules run-mozilla.sh
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