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 ...

learn more… | top users | synonyms

0
votes
0answers
134 views

I cannot run a .sh file

Here is the situation: I try to run the file smartgithg.sh I downloaded the file from this website. When I had the previous version it was running ok! If I double click the file it does not do ...
0
votes
0answers
146 views

Error: Unable to access jarfile spl.jar for stanford portable library

I'm trying to install the Stanford library for Harvard's CS50 but I'm running into a few problems... I've got the .h files in usr/local/include/spl and I've got the libcs.a in usr/local/lib but I'm ...
1
vote
2answers
294 views

Shell script running but not opening terminal [duplicate]

I'm having a problem executing a shell script in ubuntu, the script is set as executable and I enabled the execute instead of view option in Nautilus and the script does what it's meant to do which is ...
1
vote
1answer
33 views

Where is `libX11.so.*` corresponding to LXDE?

I'm trying to link Matlab to the latest JRE, and I'm getting an extremely slow GUI for which the solution seems to be to link Matlab to an older X11 library. Since the problem is essentially caused ...
0
votes
1answer
65 views

Eclipse does not open

I've installed Eclipse 3.8 through Ubuntu Software Center and when I open it the loading window pops up and freezes. Eclipse never opens... When I try to launch eclipse from Terminal it doesn't show ...
0
votes
1answer
186 views

Problem with Java and Ameritrade “thinkorswim”

Ubuntu version 12.04 Java version "1.6.0_32" OpenJDK Runtime Environment (IcedTea6 1.13.4) (6b32-1.13.4-4ubuntu0.12.04.2) OpenJDK 64-Bit Server VM (build 23.25-b01, mixed mode) Here is the problem. ...
2
votes
1answer
355 views

CrashPlan desktop app suddenly terminated after Splash Screen

CrashPlan desktop app suddenly terminated after Splash Screen This was a fresh CrashPlan install on Ubuntu 14.04 amd64 with Oracle Java 7 JDK. Most of /usr/local/crashplan/log/....log was not ...
2
votes
0answers
132 views

Desktop shortcut and lock to launcher for phpstorm failed to launch program

I have just installed phpstorm, phpstorm can be opened via command line but I can't open the program via launcher or desktop shortcut and nothing error shown. - My phpstorm.desktop code : [Desktop ...
0
votes
0answers
23 views

Alternatives to StartupWMClass in .desktop

is there any alternative to StartupWMClass in order to group a java application under the same launcher in unity? My problem is related to the fact that some applications, such as SqlDeveloper 4, ...
0
votes
0answers
113 views

Java & High CPU usage

I use a certain java application to trade the stock market and it consumes 90% my CPU power. And the CPU temp usually remains around 90c. This is a real headache. What causes this problem and what are ...
0
votes
0answers
17 views

How do I turn a jar file into a package?

I have a jar file that contains my app and I want to be able to make this into a deb package so that someone can simply type apt-get install protocasedesigner and have it install automatically onto ...
1
vote
1answer
27 views

Cannot install g++ 4.8 on OpenVZ

I have everything set, but doing apt-get install g++4.8 gives me the following java (!?!?!?) related error. Setting up ca-certificates-java (20110426ubuntu0.10.04.2) ... Error occurred during ...
-1
votes
1answer
80 views

Ubuntu 14 JVM - Could not reserve enough space for the card marking array

After upgrade to Ubuntu 14, I have issue with all JVMs crashing. I reinstall Java (oracle and openjdk versions). I spend sometime tuning the JVM heap parameters, and now finally, I can run Java ...
-2
votes
1answer
130 views

OpenJDK patched with font fixes mess up google chrome fonts

I've installed the patched OpenJDK in order to get proper font rendering in WebStorm 8. It works fine but i realized chrome has some font rendering problems since then. I only see this in chrome so ...
-1
votes
2answers
164 views

How to open program from process id?

Is there any way to open program which is running in background. I've developed an application in java for ubuntu and want to open that application through its pid if it is already being running just ...
0
votes
2answers
224 views

Matlab 2014a interface started lagging on Ubuntu 14.04

My Matlab 2014a interface really started lagging recently, after months of smooth and fast performance, on Ubuntu 14.04. Both the main Matlab window and the code editor window has a persistent ...
0
votes
1answer
670 views

How can I scale Java-based applications up for a high DPI screen?

There are some applications (mainly java based) that don't follow the global 2x scale I set in the screen-settings. So these apps are really tiny on my high DPI screen with 3200x1800px. How can I get ...
0
votes
0answers
82 views

Video Stream Not Being Rendered Properly v4l2loopback WebcamStudio

What steps will reproduce the problem? Setup an Image/webcamfeed/video v4l2loopback option try streaming it What is the expected output? The Image/video/webcam feed What do you see instead? Don't ...
0
votes
1answer
362 views

glassfish: Authorization has been refused for credentials [user: admin] given in this request

On Ubuntu 14.04 Tahr and Glassfish 4.1, I managed to reset my glassfish master password as so: ejb@ix:~$ ejb@ix:~$ glassfish4/glassfish/bin/asadmin change-master-password Enter the current master ...
0
votes
0answers
43 views

Specifying path to java interpreter while installing Java Wireless Toolkit

I have already installed JDK. I could run java programs through command line as well as through Netbeans IDE. Now I want to install java wireless toolkit. I have downloaded the "*.bin" file from ...
0
votes
1answer
41 views

hbase client running output “Usage: mapfile infile outfile”

I have made a simple client application in java for Hbase to connect with it and show results for some queries e.g list, scan etc. But When i run my application in eclispe, there are no errors but ...
-1
votes
1answer
135 views

Java in Chrome 34

I have installed the old version of chrome (34) because it is supposed to be able to work with java (as others have reported.) my question is, how do i get java to work in chrome 34? I have tried to ...
2
votes
0answers
165 views

How to use Firefox AppArmor profile with IcedTea Java plugin on Ubuntu 14.04?

Whenever I set up Ubuntu on a new system, I active the default AppArmor profile for Firefox via sudo aa-enforce /etc/apparmor.d/usr.bin.firefox Doing this on Ubuntu 14.04, however, makes Java ...
0
votes
1answer
23 views

Binary archives of OpenJDK for ubuntu

My goal is to have multiple version of java 6 and multiple version of java 7 installed on my ubuntu in order to do some tests with different versions of java. I found instructions to install oracle ...
1
vote
0answers
77 views

Start up a .jar GUI application from Login Screen [closed]

I have raspberry pi and I have compiled uniCentaPOS in a .jar file. However I want to start this GUI application without the full desktop. I just want to application running with the GUI. I have ...
0
votes
0answers
41 views

Xbox 360 controller shows up on jstest and configures, but doesn't work with minecraft

I recently recently installed Ubuntu 14.04 on and Acer C720 and installed Minecraft (this is going to be my son's computer). I installed xboxdrv and disabled xpad. When I used jstest the xbox 360 ...
1
vote
2answers
238 views

How to run .sh through terminal without using Nautilus Ubuntu 14.04 [duplicate]

I have an .sh file that looks like #!bin/bash exec /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/ java java -jar /home/me/myfolder/my.jar I've made this file executable and it works fine when in the ...
0
votes
0answers
50 views

Setting up Juniper VPN on 14.04

I saw this post, but unfortunately continue to have issues as seen here: Does anyone have suggestions for fixing this issue? Thanks!
0
votes
1answer
410 views

how to install java 1.5 jdk in ubuntu

I am getting this error when trying to install java 1.5 jdk sudo apt-get install sun-java5-jdk Reading package lists... Done Building dependency tree Reading state information... Done Package ...
2
votes
1answer
93 views

Using libreoffice base as GUI for MySQL database (os- ubuntu 14.04) [closed]

I have been trying to deploy one of my projects that uses jsp for the front end, tomcat7 for the server and a mysql database. I tried integrating the mysql database with the libreoffice database ...
0
votes
1answer
77 views

Mastering Chemistry and Ubuntu 14.04

For my General and Analytical Chemistry course at college there is a site called Mastering Chemistry, made by Pearson, that features different questions types. When I went to solve some problems, I ...
1
vote
1answer
144 views

Installing oracle java versions

I went to the website to download (Java Platform (JDK) 8u20 ), http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html to download ORACLE java for my machine. I was ...
4
votes
1answer
17k views

How to install Oracle Java on Ubuntu 14.04? [duplicate]

I am using Ubuntu 14.04.1 LTS, x64 architecture, and I specifically need to install Oracle Java. Now I know there are some instructions on the website which I follow but the same website does not ...
-1
votes
2answers
257 views

Running .jar File using JDK on Ubuntu 14.04 [closed]

I install JDK on my Ubuntu 14.04 so I can use Netbeans and Android studio. I download a .jar file in the internet and I want to run it on my PC. My problem is, I cannot find java to run this file. I ...
1
vote
1answer
128 views

MATLAB startup error ubuntu 14.04

I'm trying to run /usr/local/MATLAB/R2012a/bin/matlab on Ubuntu 14.04, but on startup it gives me the following error message: Exception in thread "main" java.lang.NoClassDefFoundError: ...
0
votes
0answers
284 views

eclipse juno crash after Ubuntu update from 13.10 to 14.04

I try to update ubuntu 13.10 in 14.04 after update ... Eclipse emitted this problem A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0xa75bc86d, pid=3118, ...
1
vote
0answers
40 views

Apport is not creating .crash file for java crashes

I am having issues on production server, It is groovy/grails application and I am using quartz to run many crons. There is one cron which is when enabled crashes the JVM. I have no idea why. I can't ...
0
votes
0answers
71 views

jProfiler GUI not showing properly on Ubuntu 14.04

I'm not sure if this is a java problem or is related to ubuntu. I'm on an ubuntu 14.04 machine and I have both Java 6 (jdk_1.6.0_43) and Java 7(jdk_1.7.0_51). JAVA_HOME is set to java 7 and that is ...
0
votes
0answers
88 views

upgrade to 14.04 interrupted and now cant get to login screen

I was upgrading from 12.04 to 14.04.It got interrupted and now I cant get to login screen. I see the following on a black screen. could not write bytes:broken pipes: *stopping anac(h)ronistic cron ...
1
vote
1answer
858 views

JDK 8 Installation for Ubuntu 14.04 (Android Studio & NetBeans)

I downloaded jdk-8u11-nb-8-linux-i586.sh and installed it in my home folder. Then I install NetBeans, it is successful I think because I can compile my java code using netbeans. Now when I install ...
0
votes
1answer
208 views

Ubuntu 14.04 freezes when running project in netbeans 8 with jdk 7

This question seems to be a duplicate but it's not! I run ubuntu from a live pendrive only and wanted to test a netbeans project for linux. I have installed oracle's jdk 7u67, netbeans 8. When I tried ...
0
votes
0answers
14 views

How to verify if java is correctly enabled in Libre Office

I am trying to use the java environnement in Libre Office. I installed an enabled in Libre Office the version 1.7.0_65 from Oracle Corporation. I then tried to use demos sheets from the obba files. ...
0
votes
1answer
48 views

Problems running logisim on Ubunu 12.04

I have been having problems running logisim on Ubuntu. At first it worked fine but now it just gets stuck "creating a file..." when I run the program. I've tried downloading another .jar and ...
0
votes
0answers
25 views

UnsupportedClassVersionError with OpenJDK 1.6 and Mysql

Using Ubuntu 13.10 on virtual server hosted by OVH (France), Server version: Apache/2.4.6 (Ubuntu), OpenJDK Runtime Environment (IcedTea6 1.13.3) OpenJDK 64-Bit Server VM (build 23.25-b01, mixed ...
0
votes
1answer
82 views

In the process of installing Java and Hadoop, my user profile has disappeared?

So I added the following code to the bottom of profile after: sudo gedit etc/profile Code added to profile: JAVA_HOME=/usr/local/java/jdk1.8.0_20 PATH=$PATH:$JAVA_HOME/bin ...
0
votes
1answer
169 views

Java is installed but not recognized

austin@HP-ENVY-m6-Notebook-PC:~$ java -version The program 'java' can be found in the following packages: * default-jre * gcj-4.8-jre-headless * openjdk-7-jre-headless * gcj-4.6-jre-headless * ...
0
votes
0answers
91 views

Carnegie learning on Ubuntu (chromebook)

I recently invested in a Chromebook, little did I realize it wouldn't run a crucial program my online school uses. So, I installed Ubuntu so I can toggle between the two via keyboard. The Ubuntu ...
2
votes
2answers
63 views

What exactly should I set as JAVA_HOME?

I am trying to make Tomcat 7 working with Eclipse, and I am not sure if my JAVA_HOME is correct. ~$ echo $JAVA_HOME /usr/lib/jvm/default-java And there is no such catalog! I only have: ~$ ls ...
0
votes
0answers
50 views

Problem with Java Swing Code

When I write some simple java code using swing, I get some strange behavior. The screen around the JFrame is black, and initially is displayed off of the screen. I have run the same code on a windows ...
0
votes
1answer
33 views

Eclipse window is not fully displayed

Some Eclipse windows is not fully displayed. Example: New project, New Class .... It is lost some of the items. Screenshot: