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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Why doesn't ps -al display my java programs?

I don't understand why ps -al or sudo ps -al won't display for instance my java processes. If I do ps -al then I don't see for example my java jobs but I see them when I do the (strange and ...
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81 views

Setting JAVA_HOME

How do I set JAVA_HOME=/usr/lib/jvm ...E ? The instructions say to use INSTALL4J JAVA_HOME=/usr/lib/jvm/java-6-sun but I get an error that says: INSTALL4J: command not found I have downloaded ...
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2answers
389 views

How do I uninstall Extreme Download Manager?

How do I uninstall Extreme Download Manager on Ubuntu 12.04? That means also getting rid of the icon that appears in the Application area of Dash as well as all the Java related stuff that was ...
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1answer
131 views

OpenJDK 7 Installation trouble on 10.04 [closed]

I added the following common personal package archive as follows: sudo add-apt-repository ppa:openjdk/ppa sudo apt-get update The update goes well, but when I try to install the openjdk-7-jdk it ...
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1answer
41 views

What are the standard places that Java Virtual Machine is configured on Ubuntu 12.04?

I'm running Pangolin (12.04 LTS) and want to sort out some Java stuff where my JVM is pointing at a different place to my Compiler. To demonstrate, my JVM is as follows: ...
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25 views

jdb not starting up

I am having a wierd problem. I manually installed the newest JDK from Oracle just about an hour ago. Now when I try running jdb through the command jdb DocumentListing1.java the output reads: The ...
0
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1answer
104 views

Really?! Installing java on web browsers is pain! [duplicate]

I have to install java in my browser (which I never needed in the last two years, since I'm running this installation of Ubuntu). I'm trying Firefox and Chromium... anything that works will be OK. ...
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3answers
50 views

Java for Ubuntu12.04 LTS

I want to install Java from Java.com - In the site I see multiple options for Linux - which one to choose for Ubuntu 12.04 LTS? Why this is not available in Ubuntu SOftware centre?
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85 views

Minecraft crashes constantly [SIGSEGV] i965_dri.so libjvm.so

My problem is that Minecraft is constantly crashing, giving 1 of 2 different errors in the log. I've tried using the edgers ppa. I've tried Minecraft with no mods or with optifine. I've searched for ...
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0answers
55 views

java won't run .jars

I just surfed around for like 2 hours and didn't find anything what really helped me. I installed Java like it was told me on the ubuntu site, and everything seemed to be working fine. But as I wanted ...
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3answers
42 views

Why cant i update my repository updates in 12.04?

I Tried to install updates via the update manager, so then i used terminal an got dpkg: error: parsing file '/var/lib/dpkg/available' near line 0: field name ...
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1answer
78 views

PyPar2 pops up when i try to run eclipse. Please help

I have downloaded the adt-bundle for linux and extracted it. Moved the extracted folder in "android" directory in my /home directory. I have also installed openjdk 6. So when i try to run eclipse, ...
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1answer
167 views

Kernel killing java process

We have three Ubuntu 12.04 boxes that are load balanced behind nginx. We originally installed tomcat7 using apt-get but ran into an issue where I believe the kernel is killing the java process due to ...
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1answer
82 views

Chrome don't allow me to run Opera Mini simulator

Can anybody to say me how to fix it? I'm using Chrome 32.
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0answers
75 views

Eclipse Kepler hangs on slpashscreen Ubuntu 13.10

I just installed Eclipse Kepler on Ubuntu 13.10 following those instruction but my Eclipse just hangs on the splashscreen turning gray, no workspace directory created, no error shown i got Jdk 7 ...
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1answer
18 views

I Have Two Versions of Java?

I currently have the 3s and 64 bit versions of java. This is causing some errors, and I want to get rid of the 32 bit version. What do I do to get rid of it?
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20 views

How to run Llanfair on Ubuntu?

Now, to define, Llanfair is a stopwatch esque program, used by speed runners, which is found Here . The program is available as a Windows download, as well as a .Jar file for use on all other ...
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1answer
196 views

phpStorm losing keyboard input

Every now and again phpStorm will lose input from my keyboard. I can still click around, but it will not register any keys. Other windows are fine. It takes a phpStorm restart to bring them back. It ...
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1answer
76 views

While debugging in Eclipse the UI freezes completely. How can I find out what's going wrong?

I'm using Ubuntu 13.10 and am debugging Java Swing Events with Eclipse 4.3. At a specific point a popup menu is shown by my application and that's the point where my UI freezes. Just the mouse ...
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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. ...
0
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1answer
34 views

Oracle Java 7 as default and one in the system?

I got successfully installed Oracle Java on 12.04 and set it as default, I wanted to know is it safe and ok to remove Icedtea and OpenJDK6 and all that belongs to it and stick only Oracle Java and if ...
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0answers
36 views

Any good tutorial install for twitter scrooge?

i need install twitter scrooge thrift code generator for java in ubuntu.i searched many places there is no good documentation for installing scrooge .please suggest me for good sites
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1answer
147 views

Apache Tomcat7 Webapp Not Working

I Installed Apache Tomcat 7 from repository. But When I copy my apps to /usr/share/tomcat7-root and access through browser /myapp/form.html 404 Error Appears. Is anything else is needed to ...
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0answers
179 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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1answer
143 views

Java problem (minecraft)

my minecraft is doing strange things since I updated a few things in ubuntu 13.10 a few hours ago. The update included a kernel update. Kernel is now 3.11.0-15-generic x86_64. Before that update my ...
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55 views

Beginner Question: Eclipse (Kepler) for Ubuntu 12.04 - Error Messages with Install

I just installed Eclipse Kepler with Ubuntu 12.04, and I am having some weird problems with it. Screengrab here My thoughts are that I probably screwed up something when installing Java? As a ...
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1answer
40 views

Switching to Java 7

I have both java-6-openjdk and java-7-openjdk installed on my machine. When I check the version, I get java version "1.6.0_27". I want to run java 7 but don't really know what all I have to change to ...
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0answers
30 views

ubuntu 12.04 LTS server nodes crashing

When running hadoop on a 16-cluster node, of Ubuntu 12.04 LTS servers, some of the nodes crash/take too long to respond. Checking the network speed with iperf I get speeds of around 6 Gbits/sec. ...
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0answers
300 views

Java -jar runs via shellscript but not via cron

I have a shell script that I want to schedule via cron to be ran every 10 minutes. The shellscript runs a jar file. If i run the shellscript via ./sensorrreader.sh it works just fine (creates a file) ...
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0answers
37 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
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1answer
78 views

Create drop down menu in Eclipse Kepler

I have problem to get the drop down menu in my Eclipse. I have reviewed the solution in other Q&A threads, like this and this (Being the most 2 helpful one). After following the instruction, I ...
0
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1answer
34 views

upgrading pdftk 1.41 to 1.44 how can I check for breaking changes?

I have the wonderful task of finding out what ( if any ) breaking changes are if we upgrade from PDFTK 1.41 to 1.44 Here is our use-case We use PDFTK on the command line from a PHP application ...
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1answer
156 views

Cannot run maven2 on Linux Ubuntu 12.04

I am trying to compile a program using maven in my Linux 12.04. In order to do, I use the mvn clean install command. However I get a build error: [ERROR] Unable to locate the Javac Compiler in: ...
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0answers
270 views

Installing Java on EC2 Instance — Unzip error

I've been trying to install java for a while now on my EC2 instance and I'm having no luck. I keep getting the error: sudo tar xf jdk-7u51-linux-x64.tar.gz gzip: stdin: not in gzip format ...
2
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1answer
37 views

New User - Installing .jar File Difficulty

New Ubuntu User - trying to download and install a file... in this case a .jar file... and having difficulty knowing where to install it. I have used Software Center to install .exe files, and it is ...
0
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1answer
45 views

Vuze azbuddy (Friends) Plugin Issues

My Vuze Plugins menu from the application menu does not open. Should it*?* I'd like to utilize the Friends plugin. It is enabled, unloaded (green) and shows version 1.0 in Tools/Options/Plugins. I ...
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1answer
170 views

Ubuntu 13.10: Upgrade interrupted because of openjdk-7

I was running an apt-get upgrade (not version upgrade, just normal), when I got this message: You might want to run 'apt-get -f install' to correct these. The following packages have unmet ...
2
votes
1answer
642 views

Cannot start Webex session. Java permission issue?

My fingers got ahead of me today and I managed to disable Java for Webex on my machine. (Install details: Ubuntu 12.04 32bit, Chrome 32.0.1700.77, Java v7, update 51, Webex working fine for a year ...
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1answer
458 views

Cannot run Spark 2.6.3 on Ubuntu 12.04

I am trying to install Spark IM in my fresh install of Ubuntu 12.04, however I am running into all kinds of problems. The steps I have taken so far were: Download the tar.gz file from the website ...
0
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1answer
70 views

finding amount of memory usage of a command in bash

I wrote a program and now I need to measure it's performance so I use time to find timings but is there any command like time that I could run my program under it and have the amount of memory used by ...
1
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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 ...
0
votes
1answer
160 views

export PATH doesn't work correctly

I have a problem with $PATH export. The only place I found where I modify $PATH is /etc/environment: ANDROID_HOME="/opt/ADT/adt-bundle-linux-x86_64-20130522/sdk" ...
0
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0answers
61 views

Unable to Access Jpcsp.Jar

I cant get JPCSP to run it gives me this error- seal@seal-Dimension-4700:~$ start-linux-x86.sh Error: Unable to access jarfile bin/jpcsp.jar I have java 7 installed idk whats wrong.
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0answers
51 views

Eclipse SVN fail to show history

in Ubuntu 13.10 after system updates (probably Java update) SVN (SVNKit) suport in Eclipse goes wrong I can do Update or Commit But I try Compare With Latest From Repository or try to show History ...
3
votes
1answer
2k views

Ubuntu - saying your security settings have blocked an application from running with an out-of-date version of java

I have this new problem since 2014 begin. I cant remotely login to this enterprise network for giving them support. Its keep showing this new error. How to fix it please? EDIT:
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1answer
75 views

Problems running java websites

I'm having problems with openjdk7 and icedtea7. In one computer, which works with ubuntu 13.10, I have installed openjdk7 and icedtea7. In the other computer, which works with ubuntu 12.04 and is an ...
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1answer
73 views

how can i make a .jar executable + I'm on ubuntu Studio 13.10

how do i make my mine craft executable.Ive tried running it in terminal and many forum answers. when I get to mine craft and i go into properties. and i look for allow to execute it doesn't appear i ...
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0answers
79 views

Problem installing Microsemi LiberoSoC on Ubuntu

I asked this question on the Electronic Engineering StackExchange but could not find the right answer and the question was closed as it was flagged unrelated. I am trying to install the latest ...
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1answer
1k views

I can't run applet on my firefox browser

I am a new user in Ubuntu 13.10 , and I want to run an applet so,I installed Java Develop Kit 7u45 with netbeans 7.4 and I can run applet from netbeans but not from browser because of security ...
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1answer
78 views

Simple bash script does not want to start at reboot

I've build a Play Framework Application (cool Java/Scala Web Framework) and would like to start it automatically like Apache2 or MySQL Server. For this I wrote a simple Bash script and did chmod +x on ...