Java is a programming language originally developed by Sun Microsystems. Questions here should be about the installation, configuration and troubleshooting a JVM (Java Virtual Machine) or a JRE (Java Runtime Environment). Programming questions (unless directly related to Ubuntu) should be asked ...

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161 views

How do I control the vmem when forking, as I'm getting different results on 10.04 lts and 12.04 lts?

Expected behavior (Ubuntu 10.04 LTS): mike@boontoo10:~$ java -version java version "1.6.0_45" Java(TM) SE Runtime Environment (build 1.6.0_45-b06) Java HotSpot(TM) 64-Bit Server VM (build 20.45-b01, ...
3
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116 views

How to do a ppa for a java ant project?

I was doing a launchpad ppa for my ant project using jdeb. when I had the unpleasant surprise in the last step that ubuntu ppa actually builds the package from the repository, not just accepts signed ...
2
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0answers
26 views

Weird java memory allocation

My task manager shows that for my java process memory allocated is 16777216.0 TB (yep, TB). It happens when programming swing application with eclipse 3.8. Oh, and my distro is lubuntu 14.04. Nothing ...
2
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0answers
146 views

Problem downloading Oracle JDK 7

I'm using Ubuntu 12.04 LTS. I'm trying to install Oracle JDK 7. When I tried to directly download the jdk-7u51-linux-x64.tar.gz from the official website, the download started and after downloading ...
2
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0answers
105 views

Stuck on render ring in fullscreen when having used `xrendr -o right`

At work I am supposed to get a Java application running in fullscreen on a big-screen tv. This TV is connected to a Intel Nuc device, which is running Lubuntu 13.10. This TV is hanging on the wall ...
2
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0answers
215 views

Pogo.com games won't work, says outdated java

I am trying to get my Ubuntu 12.04 laptop to be able to run games on pogo.com First none of the games on pogo would work because of outdated flash. Then I learned of google chrome with pep flash and ...
2
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0answers
134 views

Install java on a wine in a linux terminal server

I have a Windows terminal process (which requires Java). I need to run this in a Linux terminal server (it's an Amazon EC2 instance). I installed Wine, but now I need to install Java. When I try to ...
2
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0answers
141 views

I tried to transplant the wireless_tools to Android4.0 system, but I have a problem with Java

My Linux system is Ubuntu Kylin, a new branch of Ubuntu spreading mainly in China. I have changed some files, such as wireless.22.h, ifrename.c and iwlib.h, in wireless_tools.29/ which is located in ...
2
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0answers
455 views

Install 32 bit JRE on 64 bit Ubuntu 12.04 for Nokia SDK 2.0

I have successfully install java for my ubuntu through terminal but in mobile project want to include Nokia SDK 2.0 but this Platform is not able to run without 32bit jre. Error The SDK could not ...
2
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0answers
201 views

Java installed, command not working

I have installed java but I could not get any java command to work! Below shows what I get when I try to run java commands: sultan@ubuntu:~$ java The program 'java' can be found in the following ...
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62 views

How Can I Change Jamvm on my embedded system to Openjdk?

I have one Embedded System Currently working On jamvm. I Want to change it to openjdk. How Can I do that???
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250 views

Eclipse Juno won't open gui java apps when run with gksudo

I have Eclipse Juno installed on Ubuntu 12.04. When I run from the command line with sudo, everything works fine. However, when I follow the advice I see everywhere and run it with gksudo, I get the ...
2
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203 views

Starting minecraft logs me out of ubuntu 12.04

Whenever I start minecraft I can only get past the login screen. After that, the screen flashes dark, occasionally showing a Checking battery state ... [OK], and then it brings me to the login ...
2
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0answers
96 views

Help with Java: I want to reduce how many Java installed I have down to 1.

I have used many different methods to install java because I want to get Minecraft working. I heared that if I uninstall Java it would installed Libre Office, which I do not want to do. I have a ...
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0answers
6 views

How to fix laggy behavior in Auctionsieve 2.6.7 in Ubuntu 14.04?

With Auctionsieve 2.6.7 on Ubuntu 14.04, when I move the pointer around with the mouse, the user interface is laggy. A shady gray color is slowly painted across discrete rows of the screen from ...
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0answers
23 views

Eclipse dosn't see JDK

I had installed Eclipse and it was working well few days ago. Now I can't create Java project, there is no such option and in the Eclipse Preferences there is no mention about the word Java. I was ...
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0answers
19 views

Java process stays open

I like playing Minecraft but after I close Minecraft, the java process stays on and I need to go into the system monitor to kill it or else there will be a lot of java processes on slowing down my ...
1
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0answers
59 views

Why can't I start Eclipse after I killed it once?

Eclipse IDE in my computer running Ubuntu 13.10 hung once. I just killed the process. Thereafter it shows this whenever I try to start Eclipse: Job found still running after platform shutdown. ...
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0answers
61 views

Can Ubuntu for tablets run Java applets?

Can Ubuntu for tablets run JAVA applets in browser? My bank has netbanking build in Java and I need to use it on my android tablet which does not support Java browser applets. Don't have experience ...
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0answers
391 views

Eclipse stopped working with Ubuntu upgrade to 14.04

Two days ago I upgraded to the latest Ubuntu 14.04. Everything was working fine, until I tried to open Eclipse that I use for Java development. It shows the loading window but the program never loads. ...
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0answers
86 views

Cannot run jBoss on ubnutu 12.04

I am trying to install jBoss application server on Ubuntu 12.04. I am using Vagrant. Here is what I am getting: vagrant@precise32:/usr/share/jboss-as-7.1.1.Final/bin$ ./standalone.sh ...
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0answers
115 views

How can I improve the font rendering of Swing Java applications under Ubuntu?

Some Swing-Java programs in Ubuntu look very ugly because of their font. What's wrong with the fonts? Is there any way to fix the aliasing?
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55 views

Java apps consume 200% my CPU after cloning image in another computer

Yesterday I cloned an image of Linux from a Core 2 Duo to a Core i5 laptop. Everything works as expected except for JVM. I've installed in my machine the OpenJDK, Java 8 (jdk jre) and Java 7 (jdk ...
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324 views

How to install glibc 2.12 or 2.14 on Ubuntu 12.04?

I am making a JNI call to a C++ library and it is compiled in glibc v2.12 or v2.14, but Ubuntu 12.04 has glibc 2.15. Whenever I make a call to the C++ library I get the error glibc 2.14 not found. ...
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0answers
44 views

Netbeans 7.0.1 missing display window

SInce a few days, my Netbeans application window is missing from the screen. When I try to launch it, only the application icon appears in the launcher, but when I click on it, nothing happens. When ...
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0answers
63 views

Minecraft Framerate Drop after 5 minutes

I installed 13.10 last night on a Dell Precision M6500 and I was amazed that I could get ~50 FPS, but then after about 5 minutes, it took a sudden drop to about 2 FPS. This happens every time and ...
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0answers
29 views

How do I get a newer version of Java?

For school work, I have to read a CD. Problem one: Need to read the CD without a reader. Solved by creating a .ISO on an adjacent computer. Now, there is already a linux "run" program on the file. ...
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0answers
239 views

Ubuntu 13.10 is freezing while using openjdk-7 and Oracle Java 1.7.0_51

I have had some problems with Ubuntu 13.10 while using OpenJDK 7 to play Minexraft 1.7.4. (Please don't tell me that I need to use Oracle Java, I already know I should be doing that.) My computer is ...
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0answers
64 views

Cannot open jar files

I am trying to run Java programs that were originally created for use in Windows on Ubuntu. I am able to download the files, change the permissions to make them executable, and open with Adobe JDK ...
1
vote
0answers
76 views

How to create keyboard shortcut that toggle start/stop .jar file?

# this is for running the AIORemote server from my Ubuntu 12.04 LTS Laptop to run with my Android device as remote control mouse pad and wireless file transfer. I know how to create keyboard shortcut ...
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0answers
389 views

Android sdk manager permission denied

I am setting up eclipse and ADT everything is working fine JAVA, android virtual devices and everything except the ADT sdk manager it says permission denied. /home/yousaf/android-sdks/tools/android: ...
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0answers
62 views

How to get virtual console when ALT+CTRL+F1-F6 not working?

I wanted to install JRE latest. When I had Java (TM)... So I purged java* next time, I restart the system, I get a login screen. but after passwd given, it says failed to load session ubuntu. I ...
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vote
0answers
34 views

How to install java for eclipse europe CDT

I have Eclipse europe CDT installed on my ubuntu system. I now want to add JDT to my eclipse so I can run java programs. I allready ran the command sudo apt-get eclipse-jdt and it says I allready ...
1
vote
0answers
52 views

Custom folder locations for Java & wine programs

I have customised the default folder locations for Documents, Downloads, Pictures, etc by modifying the ~/.config/user-dirs.dirs. I use a separate NTFS partition to be able to use the same folders on ...
1
vote
0answers
216 views

Problems after upgrading to 13.10

My laptop has 4GB of RAM and has seen Ubuntu installations since 12.04. I use 64bit version of Ubuntu. I use my laptop for work and has Oracle JDK and eclipse installed - same setup since 12.04 and ...
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0answers
92 views

Symbolic link error to Java / LIBJVM

All, When trying to install postgresql, I get the following error: /sbin/ldconfig.real: usr/lib/jvm/java-1.7.0-openjdk-amd64/jre/lib/amd64/jamvm/libjvm.so is not a symbolic link I think this is ...
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0answers
332 views

Minecraft Lag/Low FPS on 13.04 (problem didn't exist on 11.10)

In Minecraft I am getting un-playable frame rates. My system is way over the recommended specs. Below are my specs: Geforce GTX 560 and Geforce GTX 460 in an SLI AMD Phenom II X6 1100T Processor 8GB ...
1
vote
0answers
106 views

screencast-o-matic keyboard shortcuts - I can't get them to work

I switched to ubuntu a few months ago and I have not yet been able to understand why Screencast-o-Matic keyboard shortcuts don't work. Apparently they should work on ubuntu in the same way as on ...
1
vote
0answers
27 views

Why does the a new user account not see the jre?

Probably a dumb question as I'm new to linux but I've installed oracle jre using my admin account. I've then put the minecraft.jar folder in the home dir and all works fine. Now I would like my kids ...
1
vote
0answers
278 views

Java can't find libjli.so despite ld.so.conf entry

I'm trying to get Java to run under AppArmor on 12.04 by copying the executable to /sandbox/java. (Symlinking is not an option because AppArmor fails on symlinks.) Currently, it won't run because it ...
1
vote
0answers
456 views

How do I enable the official Java plugin in the latest version of Google Chrome?

I was using Chromium, which runs smoothly, and was forced to upgrade to Chrome (mega.co.nz obliged me to). Now I can't execute applets in Chrome. Checking the installed plugins in both browsers, I see ...
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0answers
318 views

Problem with eclipse after installing ubuntu 12.04 LTS (detailed description)

System specs and code sample in the end of this contribution! First of all, I am new to this forum. Please tell me if there is anything wrong with the layout or the question itself. I am also new to ...
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0answers
2k views

not able to install javaws

I need to use java web start to run TopCoders ContestAppletProd.jnlp. When I try to run the the arena I get Java not found error. Upon selecting the option "using Java Web Start" the jnlp file ...
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0answers
328 views

Disabling Java auto update notification in ubuntu?

I am looking for a way in ubuntu to disable the Java/JRE update notification so users do not get asked to allow or delay a JRE update. I would like to have it not check at all so it is not possible ...
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0answers
183 views

Ubuntu 12.04 - Eclipse Juno won't run apps

I'm installing Eclipse Juno for my son, who is trying to learn Java. I can start Eclipse OK and create a simple 'Hello world' program, but when I try to run my code it won't output to console. When I ...
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0answers
339 views

PS3 Media Server not opening?

This is my first time posting on the forums but I've tried everthing and cannot find an answer anywhere. My problm is that I am unable to run PS3 Media Server (PMS) on Ubuntu 12.10. I run the 32 bit ...
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vote
0answers
143 views

How to run a Sikulli Java program written on windows platform on a Linux/Ubuntu Server?

I am a bit new with the Sikulli tool so please bear with my ignorance. I have written a Sikulli program on windows using Java to automate the Skype application, which works fine on Windows. Now I ...
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0answers
243 views

Ant error after installing NetBeans 7.3 in Lubuntu

I have NetBeans 7.01 from Debian repository - all works. I have problem with NetBeans 7.3 from official site (installed at the same machine) - I can't compile anything: ERROR - Ant is misconfigured ...
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0answers
96 views

Why does Ubuntu Java server disconnect clients?

I am using Ubuntu Linux 12.04.1 LTS Edition. I hosted a Java server and it worked fine till yesterday, when a sudden disconnection of 500 clients occured. I got an error java.io.IOException: ...
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0answers
157 views

Any Ideas on a Better Browser Enabled Cloud Desktop using Ubuntu 12.04, Gnome and Amazon Web Services?

I am currently using NoMachine's NX Web Companion free product using java as well as FreeNX and an RDP for Windows to access a Gnome GUI Ubuntu 12.04 instance running on Amazon Web Services Free Tier ...