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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6
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0answers
75 views
+50

prevent java applications from creating tray icon

With Ubuntu 13.04 the possibility to whitelist (and consequentely blacklist) certain applications from creating a tray icon is gone. Since then the tray icons of Java applications and Wine icons are ...
3
votes
0answers
156 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
votes
0answers
482 views

Webex crashing/lockup Firefox / Chromium Browsers - Ubuntu 12.10

When launching webex from firefox or chromium browser. Browser freezes and stops responding. Browser process must be killed to exit. Please help me troubleshoot this. Here are my setup details and ...
3
votes
0answers
106 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
votes
0answers
88 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
votes
0answers
63 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
votes
0answers
154 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Pogo.com games won't work, says outdated java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to get my Ubuntu 12.04 laptop to be able to run games on pogo.com First none of the games on pogo would work because of outdated flash.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
votes
0answers
112 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
votes
0answers
117 views

Error while running Java in Eclipse

I'm getting an invalid error while creating project name of Java in Eclipse. I hope you suggest me any solution to it. Error: # # A fatal error has been detected by the Java Runtime Environment: # # ...
2
votes
0answers
132 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
votes
0answers
366 views

freemind not opening in ubuntu 12.04

I am a beginner in Ubuntu and mine is Ubuntu 12.04 while trying to run freemind I am getting the message sruthin@sruthin-1015CX:~$ freemind /usr/bin/freemind: 228: /usr/bin/freemind: ...
2
votes
0answers
60 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???
2
votes
0answers
227 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
votes
0answers
200 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 ...
1
vote
0answers
20 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 ...
1
vote
0answers
41 views

Files are not being sent to trash but being permanently deleted

When I booted my computer, I noticed: that the Trash icon was missing from File Manager; this message when I tried to delete a file: Are you sure that you want to permanently delete ...
1
vote
0answers
74 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. ...
1
vote
0answers
24 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 ...
1
vote
0answers
28 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. ...
1
vote
0answers
36 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
54 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 ...
1
vote
0answers
36 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 ...
1
vote
0answers
99 views

Removed JDK6, installed JDK7. JAVA_HOME broke and javac not installed

I am finding that the javac is not in the java-7-openjdk-i386 package. Problem 1: $ javac The program 'javac' can be found in the following packages: * default-jdk * ecj * ...
1
vote
0answers
27 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
973 views

When I start Eclipse 4.3 I get “Invalid Configuration Location” error

When I first installed Eclipse 4.3 (Kepler) it ran A-Okay. I even did a Java program. When I shut down Eclipse and ran it again later, I got the error message below. Thinking I did something wrong ...
1
vote
0answers
42 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
203 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 ...
1
vote
0answers
67 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 ...
1
vote
0answers
119 views

How to set up no-ip dynamic dns?

I have had a Bukkit server for a month now, running on Windows 32 bit. I recently decided to get 64 bit Ubuntu, so I could run more RAM, as I could have 64 bit java. I am using no-ip no probs on the ...
1
vote
0answers
77 views

What is the best way to construct Java EE application deployment environment on Ubuntu?

I'm a Java developer and I don't get familiar with Linux especially Ubuntu. For the past 2 weeks I've worked in transforming our Java EE appliaction deployed from Windows platform to Ubuntu, including ...
1
vote
0answers
316 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
90 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
24 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
261 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
27 views

JREs from different vendors on the same system

In various tutorials, it is said, that you should remove existing JRE/JDK before installing new one (e.g. remove OpenJDK before installing the one from Oracle). Is it really necessary? I remember ...
1
vote
0answers
425 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 ...
1
vote
0answers
303 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 ...
1
vote
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 ...
1
vote
0answers
286 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 ...
1
vote
0answers
166 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 ...
1
vote
0answers
324 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 ...
1
vote
0answers
440 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 ...
1
vote
0answers
180 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 ...
1
vote
0answers
124 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 ...
1
vote
0answers
233 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 ...
1
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0answers
94 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: ...
1
vote
0answers
149 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 to access a Gnome GUI Ubuntu 12.04 instance running on Amazon Web Services Free Tier ec2. What I have ...
1
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0answers
119 views

Hit a wall. Trying to run a relay board with javaFDD2xx. Need help

I am somewhat new to ubuntu, got a tough question for ya: EDIT:This page did not like my links, so I put (google it) where I removed a link So, I am trying to run one of these: denkovi usb 4 relay ...
1
vote
0answers
215 views

Why does Wurm Online keep crashing?

Everytime I run Wurm Online the game starts up then goes to the loading/splash screen as it connects to the server. It then appears to connect and as I enter the game it crashes and closes the game. ...
1
vote
0answers
411 views

How can I run .jar files with openjdk by default?

Here is the problem: I have to open a .jar file. When I try with right click and openjdk... it works fine. If I try to choose a default application (right click, properties, open with, other...), ...