Java programs not working.

I'm having problems running java programs. Whenever I open them, the window will open, but nothing will appear inside. The only parts of the program that appear, and only sometimes, will be the word "cancel" or "OK" where there should be buttons, but the rest of the program, including text boxes, other buttons, anything else, etc. will not load. Does anybody have any ideas as to what might be the problem? Thank you.

Hmmm. Both of those programs work fine on my machine. We're running the same version of the OS and the hardware shouldn't matter, but maybe someone with an Intel Mac like yours could try them and report on their results.
As a shot in the dark, you could run the standard maintenance routines like Repair Permissions and Repair Disk to see if that fixes your problem. Other than that, I don't know what to suggest. Sorry.

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Java program not working using newer version of scheduler (AutoSys)

A little background: I'm in the middle of trying to upgrade our AutoSys server (scheduler) to the latest version (version R4 to R11) and have to do regression testing to ensure our jobs will work in the new version. There's a small java program that is not working supposedly due to the following error:
Exception in thread "Main Thread" java.lang.NoClassDefFoundError: com/f1j/swing/common/JDKAdapter
at com.f1j.swing.common.Adapter.<clinit>(Adapter.java:86)
at com.f1j.swing.engine.ss.JBook.<init>(JBook.java:3032)
at com.f1j.swing.engine.ss.JBook.<init>(JBook.java:3096)
at com.test.Foo.performScan(Foo.java:122)
So in the old version (R4), it runs fine. In R11, I get the exception above. The CLASSPATH matches and I've verified that by echoing it in the shell script that calls the java program. Here's how it's called in the shell script.
echo $CLASSPATH
${JAVA_HOME}/bin/java com.test.Foo
So the Foo class was written by me, which makes use of this external library called f1j11swing.jar (for spreadsheet creation).
The source of the error is from this line in Foo (line 122):
book = new com.f1j.swing.engine.ss.JBook();
The funny part is JDKAdapter (the missing class) is in the same jar file as JBook, so it definitely finds the library in the classpath. But for some reason, this new AutoSys version is spitting out this error. I've exhausted many approaches to resolving this, but I'm still stuck.
Here's the layout of how things are called (should be same for R4 and R11):
1. AutoSys server logs into client machine XYZ as user arnold
2. arnold (AutoSys client) on XYZ executes shell script to call java program
The only significant difference I see is that the AutoSys server in R4 is HP while the R11 server is Sun. However, it shouldn't matter because the client server they're logging into to execute the script is the same linux server.
Does anyone have any ideas? I've already started dialogue with the vendor and it seems kind of in limbo at the moment. Please let me know if you need more info. Thanks.

Hi DrClap,
I just checked jre/lib/ext of my $JAVA_HOME and verified that there doesn't exist any library with a class named "Adapter." We don't put anything in this directory other than what came with the original installation. I've tried isolating the jars before as well, by doing something like (to no avail):
java -cp /users/test/lib/f1j11swing.jar:/users/test/lib/Foo.jar com.test.Foo
If I remove the f1jswing11.jar path in the above command, it will complain about other things. Also, for fun, I tried dropping f1j11swing.jar into the ext folder and removing it from the CLASSPATH and it yielded the original error. Running it directly from the shell and old version of autosys works fine.
I hope I understood your suggestion correctly and please let me know if you have any other ideas. I'm surprised why java would act differently with a different version of an AutoSys client logging into the same machine and environment. Thanks.
xiarce - I haven't heard anything regarding this, but I'll bring it up. Thanks.
Edited by: user4170063 on Apr 13, 2011 2:25 PM

Java does not work at all upon using the update manager to update to firefox 3.6.10 for Ubuntu 9.0.4

OS: Ubuntu 9.0.4
Browser: Firefox 3.6.10
upon updating to firefox 3.6.10, java does not work at all.
websites that use java do not work at all anymore, when they worked just fine before the updating thru update manager. e.g. hulu website cannot play any of the shows.
i can give the folder of bookmarked pages i tried.
how to do that on here, i've yet to see if possible.
i can even give saved text from the terminal concerning certain attempts.
when i updated thru update manager, it gave some weird java plugin that wasn't there before "The IcedTea Web Browser Plugin IcedTea6 Java Web Browser Plugin (execution of applets on webpages)".
i uninstalled this as instructed by an answer found in one of the pages i saved, cuz it was conflicting w/another java program the updater said i needed. right now, i don't remember for sure what it was. it perhaps was realplayer flash or Java itself. w/all the hours/days of searching i put in, it's difficult if not downright impossible for me to remember all the specifics of what i tried.
i've searched throughout many webpages (including many searches on mozilla, ubuntu, java, etc) for instruction in fixing the problem.
oh, and incidentally, on the Java site, when i try the verify test of Java, firefox pops up with that yellow bar right below the slew of tabbed website windows, giving the statement "additional plugins are required to display all the media on this page. (w/link to) install missing plugins ." which is what i do, go thru the requesting plugin installation. it comes up with, guess what, the IcedTea Java Plugin. i click on the 'next' in the "Plugin Finder Service" box that pops up, & all it gives me is "No plugins were installed. IcedTea ...Plugin failed. and the link 'find out more about plugins or manually find missing plugins'". the link takes me to some of the very things/plugins that wouldn't install in the first place. the Java test failure is a LOL funny, as what plugin it is saying is required (IcedTea) is a recommended alternate program to display the very test in the first place.
i followed the given instructions on those many searched pages, in every case (barring what i may have just plain missed), but to no avail.
i've even gone to the point of trying to reinstall the previous 3.5.13 firefox version, from mozilla site. even that wouldn't install.
i've tried installing Java for my sys direct from it's site. nada.
now it's time for me to post the problem & perhaps someone will come up with some kind of "dummy" way to fix it.
until then many sites a regularly use are totally useless to me on this fast puter.
the only way i can get to use such sites, are two choices: 1. use a dinosaur laptop, which is slower than molasses & cannot handle to any streaming stuff, or 2. use an available internet access puter at the library. but useage for ea person per day is limited to only one hour a day. and one can end up waiting for an hour or more ( in the busiest periods) to even get to use one.
so, is there anyone at all, who knows any for-sure working fix for this problem?
thanks muchly :^D
p.s. i can't pay anybody any money for such help, as is required in certain sites (e.g. Java website), cuz i don't have any.
i can pay in labor tho, if there is someway to find someone who can physically be at this puter w/me, taking me step-by-step
sorry for the 20-pg essay. i hope it was all clearly understood. if, not, well, clear communication is always what is needed, ask away.

Your above posted system details show outdated plugin(s) with known security and stability risks.
*Shockwave Flash 9.0 r999
Update the [[Managing the Flash plugin|Flash]] plugin to the latest version.
*http://www.adobe.com/software/flash/about/
In Firefox 3.6 and later versions you need the Next-Generation Java™ Plug-In present in Java 6 U10 and later (Linux: libnpjp2.so; Windows: npjp2.dll).
http://java.com/en/download/faq/firefox_newplugin.xml
See also http://java.sun.com/javase/6/webnotes/install/jre/manual-plugin-install-linux.html

HT1338 i think my java is not working properly what do i do

i think my java is not working properly what do i do

Java 7 updated for 10.7-10.8
Released Feb 1, 2013, fixes 50+ security flaws
http://www.esecurityplanet.com/patches/oracle-responds-to-java-security-flaws-wi th-50-fixes.html
Download and install
https://www.java.com/en/download/faq/java_mac.xml
For Java versions 6 and below OS X 10.5-10.6 machines
Apple supplies their own version of Java. For Mac OS X 10.6 and below, use the Software Update feature available under the Apple menu to check that you have the most up-to-date version of Java 6 for your Mac.
https://www.java.com/en/download/faq/java_6.xml
Java SE 6 End of Public Updates
After February 2013, Oracle will no longer post updates of Java SE 6 to its public download sites. We highly recommend downloading and installing Java 7.
If your considering upgrading OS X from 10.6.8 to 10.8 via AppStore to run Java 7
Be forewarned no PowerPC based programs or driver software will run any longer.
Check here BEFORE you upgrade OS X!
http://roaringapps.com/apps:table
Alternatives if you must run Java 7
If Apple disabled Java 6 in 10.6, and you can't upgrade OS X to 10.8, then your pretty much done with Java in OS X because Oracle won't issue updates for Java 6 anymore.
However you can install Windows 7 and continue to use Java 7+ there until support for Windows 7 ends in 2020.
Windows in BootCamp or Virtual Machine?
If your on 10.6, I very highly recommend the free Virtualbox for the virtual machine software as it gets updates, VMFusion and Parallels have moved on with only 10.7+

Java currently not working, but was working previously. Change occurs around updates.

I need Java to upload info to a GoDaddy website. Java was working in January, then did not work. It worked again after an update, then stopped working about the time of another Firefox update. Currently, Java is not working, but I am able to upload thru Internet Explorer. I seem to have the latest Java for Firefox installed, it is enabled so I am at a lost. Did an update not install properly? I am really at a lost since success and failure seem to be tied to Firefox updates.

>
You should be aware that this is a forum for discussion for Java developers. It is not an end user support forum.
At any rate your issue is a problem with the site in question. "java.lang.NoClassDefFoundError: PChatPanel" means that resources the program needs cannot be found. This is a problem with that site and you will have to address it with them in order to resolve it. Nobody else can help you with this because it is a site problem and beyond our control.

HT1338 I installed Mac OSX Snow Leopard 10.6.3 And now my Java is not working, what can I do to fix's this?

I installed Mac OSX Snow Leopard 10.6.3 And now my Java is not working,what can I do to fix's this?

Run Software Update to get to 10.6.8 and update Java.

Java Plugin not working with firefox 3.o.13 and linux.

this is my ln -s to the plugin at /usr/lib/mozilla/plugins
libjavaplugin_oji.so -> /usr/local/jdk1.6.0_16/jre/plugin/i386/ns7/libjavaplugin_oji.so
Any ideas why java is not working?
Here's the ln -s again:
#pwd
#/usr/lib/mozilla/plugins
# ls -l
lrwxrwxrwx 1 root root 63 Sep 28 20:41 libjavaplugin_oji.so -> /usr/local/jdk1.6.0_16/jre/plugin/i386/ns7/libjavaplugin_oji.so
Here are my java stats:
# java -version
java version "1.6.0_16"
Java(TM) SE Runtime Environment (build 1.6.0_16-b01)
Java HotSpot(TM) Client VM (build 14.2-b01, mixed mode, sharing)
Firefox 3.0.13:
Mozilla/5.0 (X11; U; Linux i686;
Gentoo Linux:
# uname -a
Linux tma 2.6.30-gentoo-r5 #10 SMP Sun Sep 20 21:52:19 PDT 2009 i686 Pentium III (Coppermine) GenuineIntel GNU/Linux
I installed java from a jdk*.sh file and set the class path in /etc/bash/bashrc (not that it matters.
The appletviewer does work.

solved: I knew you all knew I could figure this out.
#cp -R /usr/lib/mozilla/plugin/ /usr/lib/firefox-mozilla/
asuming this is true:
tma plugins # pwd
/usr/lib/mozilla/plugins
tma plugins # ls -l
total 4
lrwxrwxrwx 1 root root 63 Sep 28 20:41 libjavaplugin_oji.so -> /usr/local/jdk1.6.0_16/jre/plugin/i386/ns7/libjavaplugin_oji.so
tma plugins #

Java 7 not working on new (4/2/13) OS 10.8 machine

I downloaded Java 7 and the app is not working.
Checked it on Java site and it is not functioning.
Validated Java is enabled in browser
Cleared Cache...
Not sure what else to do.
Was going to uninstall and re-install with security off, but am not sure how to uninstall. My first Mac....
Thanks in advance.

I had a similar problem running Java with OSX 10.8.3. Even after performing the latest software update (including Safari 6.0.4) in addition to download and installation of the latest version of Java (version 7 update 21), Java did not work. And the “Java icon” was absent from the “system preferences” menu (should be at the bottom under the tab “other”). Very strange! But I found a solution: 1.) Go to “Library > Internet Plug-Ins”; 2.) Move all JavaAppletPlugins to trash (I moved “JavaAppletPlugin (1.7.10.18).plugin” and “JavaAppletPlugin.plugin”); 3.) Download and run the latest Java update; 4.) re-launch Safari.
That solved my problem and I can run Java applications in Safari. Again......

Java is not working any more

The last 6 months Java has not worked at all. I have Java 1.4.2 and 5.0 installed. I have tried re-installation, emptying buffers, resettings safari, using other browsers, created new user account in OSX and so on. I have tried all the tricks in the book and I have talked with other people that have the same problem without being able to find a solution.
My theory is that everything went wrong with the last java update, and I'm wondering whether Apple will release another update also including Java 1.6. I have waited quite long now, hoping for a update, but it doesn't seem to happen. Does anybody have some ideas on what I can do to get Java working again.

HI punsk and Welcome to Apple Discussions ...
Since you're having so much trouble with Java, you might consider backing up your files and doing a complete erase and reinstall. Not an Archive and Install, ERASE and start over. Once you do that, go to Software Updates available from the Apple menu; Apple/Software Updates and start from scratch.
If you do this, after this is finished, run Disk Utility from your Applications/Utilities folder and Repair Disk Permissions.
Also, on your iBook. Make sure you have available drive space for updates. Open Disk Utility, select MacintoshHD in the panel on the left, then look down right side of window and you'll see:
Capacity and Available. Make sure your Available drive space is at least 20% of the total drive.
Carolyn

Java 7 not working on OSX 10.8.3

I need some help with Java 7.
I am trying to open my photo lab software, however, it keeps giving me a message saying I need to download the Java Runtime Environment. I clicked on the link and it brought me to the Java site. I sucessfully download the software but it still doesn't work even though Java test show's it's working.
I'm running OS X 10.8.3.
I downloaded the softwared using Firfox don't know if that makes a difference.
I've checked my Java setting and they all seem to be enabled. At this point I have not idea whats going on. I didn't have this problem before and can't figure out what to do.

I had a similar problem running Java with OSX 10.8.3. Even after performing the latest software update (including Safari 6.0.4) in addition to download and installation of the latest version of Java (version 7 update 21), Java did not work. And the “Java icon” was absent from the “system preferences” menu (should be at the bottom under the tab “other”). Very strange! But I found a solution: 1.) Go to “Library > Internet Plug-Ins”; 2.) Move all JavaAppletPlugins to trash (I moved “JavaAppletPlugin (1.7.10.18).plugin” and “JavaAppletPlugin.plugin”); 3.) Download and run the latest Java update; 4.) re-launch Safari.
That solved my problem and I can run Java applications in Safari. Again......

Java Safari Not Working

Hi all, I am running 10.4.11 with the new safari but now I believe my java is not working right anymore. I am getting the mug with arrows and no response when I try to upload photos onto places like facebook and costco. I have gone through the software update but it says I am all up to date. As well, I need to access the following site:
http://www.cra-arc.gc.ca/esrvc-srvce/tx/ndvdls/myccnt/menu-eng.html
and the following comes up...
"Java applet unable to load"
then..
+On Macintosh Operating Systems:+
+Mac OS X version 10.4.+
+Browsers Supported:+
+Safari 2.0.4 (Webkit 419.3 or higher).+
+Apple JVM 1.4.2_07 to 1.4.2_16;+
+Apple JVM 1.5.0_05 or higher.+
+Safari 3.0.4 (Webkit 523.12 or higher).+
+Apple JVM 1.4.2_07 to 1.4.2_16;+
+Apple JVM 1.5.0_05 or higher.+
Any help?

Commiserating with you Seanifer - I cannot get Java-based Webinars (Citrix) to load either. As a test of a theory, I tried to load the same webinars in Firefox. It too didn't load - I suspect it's an issue specifically with Java and not necessarily with Safari.
I too have all software updated - I'm running in Leopard v10.5.6, running Safari v3.2.1 and Java Web Start 12.2.0. Firefox v3.0.6
We might want to begin with temporarily removing the plist for Java. Do you know how to do this (I do - I'm asking so as to know how detailed my assistance should be for you).
I have the following Java components loading in this order:
Java applet versions
J2SE 5.0 32bit
Java SE 6 64-bit
J2SE 5.0 64bit
J2SE 1.4.2 32-bit
Java application versions
J2SE 5.0 32bit
Java SE 6 64-bit
J2SE 5.0 64bit
J2SE 1.4.2 32-bit
I believe these are the "default" settings as seen in my Java Preferences panel.
Rolling-up my sleeves on this one! Stay tuned.
- mp

Java apps not working right

I lately have found problems with Java apps not working correctly. For example, in Yahoo Widgets I cannot get any widget preferences to display; in Apple's Java Preferences for J2SE 5.0 the preference window opens but is blank; and in JBidwatcher the buttons are missing in main and preference windows.
When I log in as another user I find all those apps work properly, so it seems to be something wrong within my User folder. I tried reinstalling the Java J2SE50ReIease4 but it didn't help. Is there something I can delete and/or reinstall to fix this problem?

Ditto here,
I made the mistake of thinking I could throw away the preferences in the Java folder and new pref's would automatically replace the missing pref's, much to my surprise no such thing happened. My settup is the same as yours, except my OS is 10.4.8.
Someone please help.
Thanks,
BJZTX
G5 D2GHz Mac OS X (10.4.7) G4 Notebook 10.3

Java applet not working savevid keepvid

Hi all,
I'm sure I'm not the only one who has been confounded by Java applets not working in certain download web services; in my case, keepvid.com and savevid.com to download copies of youtube videos. It has been a huge headache and even debilitating in my case. I teach film and video to middle schoolers, and we often use youtube as a resource for our class projects.
I found a solution today, I think, and wanted to share it:
I installed the browser called "Torch" and it seems to work fine, so far.

thanx 4 replying
using the browser to view Applet is not recomended that is because if u change the the source-code and recompile the applet then run it using the broswer it will run the old-version
Also i've found the solution here
http://www.cs.utah.edu/classes/cs1021/notes/lecture03/eclipse_help.html

Java & Flash not working in safari

Hello Friends,
why java & flash is not working in safari?
I have checked Java preferences, tab called general tab, and the checkboxes, both checked. java version run on the termial & it confirmed java by displaying it's version. running perfect.
The problem is java & flash not working in safari, might be because of , so?
when ever i open sites like web design company for project i wasn' t able to open such sites...
kindly guide me for the same.
Thanks,
John Millard
Edited by: 951029 on Aug 6, 2012 4:01 AMJavatester site<a/>, so?
when ever i open sites like web design company for project i wasn' t able to open such sites...
kindly guide me for the same.
Thanks,
John Millard
Edited by: 951029 on Aug 6, 2012 4:01 AM

Flash is totally unrelated to Java, so what you're saying is that certain plugins are not working under Safari of which one just happens to be Java. You're the second one I see make mention of that, but the fact remains that you'd need to ask Apple what is going on with their browser.

Java update not working

Java is not working. Already tried downloading Java 7 update. Java (Oracle) cannot verify that I have Java installed. Java does not show up in system prefrences even after download success screen, and shutting down all apps and computer. I checked console - var/log - install.log Displaying 'Install Succeeded'
Please help!
Thanks!

Simple drag-and-drop does not normally involve Java at all. How is the external HD formatted?
The final Java update for Leopard was:
Update 10, 29 June 2011 - This release updates J2SE 5.0 to 1.5.0_30, and updates Java SE 6 to 1.6.0_26. J2SE 1.4.2 is no longer being updated to fix bugs or security issues and remains disabled by default in this update. Support for out-of-process Java applets on Mac OS X 10.5 Leopard has been removed with this update.
This release is only for Mac OS X 10.5.8 or later versions of Mac OS X 10.5. http://support.apple.com/kb/DL1359
and for Snow Leopard:
http://support.apple.com/kb/DL1360
Note: Java 1.6 for Leopard is 64 bit only, but for Snow Leopard it is available for both 32 and 64 bit.
http://www.roguish.com/blog/?p=266
Since August 2012 updates for Java (and especially Java Runtime Environment, which is what you actually need) must now be downloaded direct from Oracle:
http://www.oracle.com/technetwork/java/javase/downloads/jre7-downloads-1637588.h tml
Further information here:
http://www.oracle.com/us/corporate/press/1735645
and their FAQ’s:
http://docs.oracle.com/javase/7/docs/technotes/guides/jweb/mac-faq.html
However, if you need the Jave 6 JRE and plug-in, MadMAC0 has posted at
https://discussions.apple.com/message/20107182?ac_cid=tw123456#20107182
Apple has also posted (Oct 22/12) the approved solution for restoring the Java 6 plug-in:
Java for OS X 2012-006: How to re-enable the Apple-provided Java SE 6 applet plug-in and Web Start functionality.

Java programs not working.

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