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.
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
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.
I can't seem to be able to get Java working on my computer which is running Ubuntu 9.10 and firefox 3.6. I have followed instructions to download Java and when I restart firefox there is no Java plugin and it does not appear to be installed.
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.
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.
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?
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.
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
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.
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.
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?
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.
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.
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
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 ?
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.
After upgrading java (jre) to 1.6.0_19, the java plugin no longer loads into Firefox. All the rest of my plugins from /usr/lib/mozilla/plugins/ load fine.Java can be a pain such a pain the neck!
I use openSUSE 11.4 64 bits, KDE and FireFox 5.0. I regularly update. When trying to reach my bank, I get the following error: Code: icedteanp plugin error: Failed to run /usr/lib64/jvm/java-1.6.0-openjdk/jre/bin/java. For more detail rerun "firefox -g" in a terminal window. Is there anything I can do to remediate ? Does IcedTea everything that Java does?
I just did an upgrade from 8.04 to 9.04 and i'm loving it. I just need to get Java working so I can use ..... and stuff like that. I installed OpenJDK and the plugin but I can't figure out how to get it to work in Google Chrome or even Firefox.
I would like some help to run sql queries in Ubuntu. For a school IT project, we must write a Java program that runs queries. Seeing that I'm going away on holiday and will be away from my Win7 desktop, I will have to work on my Ubuntu laptop. When I run my program, I get these two sql exceptions:
Code:
sun.jdbc.odbc.JdbcOdbcDriver No suitable driver found for jdbc:odbc:ITPAT2010
Note: it is not my program that is causing the problem, since it works fine on Win7. But here's my code anyway:
Code:
void OpenDB() { System.out.println("INTO BRIDGE"); String url = "jdbc:odbc:ITPAT2010"; //JOU BRUG SE NAAM
[code]....
I believe the drivers that handles the connection to the database aren't installed. The format of my database is: *.accdb (was created on Win7 using Office 2010). I can't open this file, probably because I have no database programs installed?
I am the new user of linux and installing eclipse IDE in the ubuntu server10.10. I have followed the steps given in the links [URL] and [URL]. After installing sun-java6-bin, sun-java6-jre and sun-java6-jdk, java is not running in my ubuntu server10.10. and got error like this
$ java -version Error: could not open '/usr/lib/jvm/java-6-sun-1.6.0.21/jre/lib/i386/jvm.cfg' $ javac -version Error: could not open '/usr/lib/jvm/java-6-sun-1.6.0.21/jre/lib/i386/jvm.cfg' $ javac HelloWorld.java Error: could not open '/usr/lib/jvm/java-6-sun-1.6.0.21/jre/lib/i386/jvm.cfg' $ java HelloWorld Error: could not open '/usr/lib/jvm/java-6-sun-1.6.0.21/jre/lib/i386/jvm.cfg'
I downloaded Firefox 3.6 from the Mozilla website, and installed Java Runtime and Java Browser Plugin from Ubuntu Software Center, but Java will not work within Firefox, it works with Firefox 3.5.7 installed from the repositories, but I really want to use Firefox 3.6. I've even tried UbuntuZilla, without any success. This is annoying as I visit a lot of Java enabled websites.
Problem : Cannot get Firefox to work with Java Firefox version : 3.6 Firefox Plugins : Java not showing in Firefox plugins Operating system : Ubuntu 9.10 (Linux) Java install :
Instruction : I have tried to follow the instruction from the lnks but still cannot get it to work.
