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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24 views

Window Transparency with Java

I'm using a java application that relies heavily on window transparency it to work properly (windows apparently fade on top of each other to make them cross over each other). On Windows it works just ...
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370 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 ...
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163 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 ...
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23 views

Use DEB for distribution of WAR?

I have created a Java EE program with a WAR-file as a result. To run this file I use the JBoss Wildfly 8 server. Now I have multiple Ubuntu systems where I want to install the Wildfly server and run ...
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24 views

issue in java runtime

I have Ubuntu 14.04 64 bits on lenovo z5070 laptop. I've installed java on my laptop but I think that It doesn't work correctly. Because It usually warn me about a problem and make a log file. I've ...
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249 views

how to enable webex on 14.10 64bits

I had issues to join Cisco Webex in Firefox on 14.10 64bits. Here is my experience to make it work. First, you need to install either openjdk/icedtea or Oracle Java as the JRE. You should be able ...
2
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119 views

Run Windows Java program in Ubuntu 12.04 without Wine

If a Windows program (*.msi) was written in Java, is there a way for me to extract the contents and install it taking advantage of Java's cross-platform capabilities? I'd like to install it bypassing ...
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167 views

The installed java is version 7u65, yet the ubuntu package is 7u71, why the discrepancy?

I'm running Ubuntu 14.04 and need to use Java 7 update 71. It seems like openjdk has been updated in the Trusty repos to update 71, yet even if I install the update java seems to still be at version ...
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404 views

Unable to start topcoder arena in Ubuntu 14.04

When I want to clear cache using javaws - viewer these error comes. I am trying to launch my topcoder arena. Picked up JAVA_TOOL_OPTIONS: -javaagent:/usr/share/java/jayatanaag.jar Exception in ...
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399 views

How to open jar file with doubleclick after upgarade to 14.04?

After upgrading to 14.04. I ran into problems with opening .jar files. Double clicking on Client.jar doesn't open it. I tried right clicking and selecting both , OpenJDK Java 7 runtime and OpenJDK ...
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75 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 ...
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431 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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147 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
299 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
159 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 ...
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0answers
506 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 ...
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98 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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207 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 ...
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109 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 ...
2
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0answers
1k views

Can't start Hive and Hadoop

I try to install hive and hadoop. But If I started them though this command hive --service hiveserver It errors return like this: /home/babak/Downloads/hadoop/bin/hadoop: Zeile 258: ...
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18 views

Is there a way I can get five9 java based dailer to work with ubuntu?

I work from home for a call center and the software we use is based on java and is called Five9 or CVV agent. It only works with Windows and Mac but not Linux. I called the tech support and they told ...
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37 views

Does Minecraft 1.8.8 use libudev.so.0?

I had some issues launching several programs, such as Popcorn Time, Spotify, and Minecraft.. Both Popcorn Time and Spotify were fixed, in Popcorn Time I simply changed the hex code with ghex, in such ...
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24 views

What is javac internal?

I just installed a new version of Java 8, when I asked for the version of the Java I got following output ~/$ javac -version Picked up JAVA_TOOL_OPTIONS: -javaagent:/usr/share/java/jayatanaag.jar ...
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29 views

Symantec Class 3 G4 intermediate certificate missing from ca-certificates/ca-certificates-java

I hope that you can help. I did a search and didn't find this exact issue. A vendor of ours recently updated their SSL certificate using a Symantec intermediate certificate. Our java process was no ...
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0answers
29 views

Java error when simulation software is closed

so I have been using Comsol on ubuntu 14.04 for a while now. Everytime I close the software, a java error shows up. I tried updating java, reinstalling it but to no avail. Any help or advice is much ...
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36 views

Broken Packages Issue while installing JDK on Ubuntu 14.04

I am having issues while trying to install JDK on Ubuntu 14.04. Following is what I see: araj1@araj:~$ sudo apt-get install openjdk-6-jre Reading package lists... Done Building dependency tree ...
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0answers
19 views

About dynamic web project or compile a simple Java program

My problem is that when I start my eclipse - using ./eclipse. I am not able to run any of the Java program or J2EE. When I try to install - WTP or any other version of J2EE - the packages are ...
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0answers
77 views

Missing main menu icons in Java applications

I have fresh install of Ubuntu 15.04 x64 and when I launch any Java-written application, i.e. LibreOffice, Eclipse IDE, PyCharm IDE, etc., I can see no main menu icons (Open, New, Save, Save as, ...). ...
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0answers
73 views

Java applications show title-bar only with multiple monitors

I'm having an issue with Ubuntu, Java and multiple monitors. I am running Ubuntu 14.04.2 LTS. Java 1.7.0_80 (application requirement) and a laptop with a monitor hooked up via VGA. The issue is when ...
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0answers
442 views

Citrix Receiver on Ubuntu 15.04 with multiple monitors

I'm really struggling with this one... I have installed Citrix Receiver 13.1 on my Ubuntu 15.04 system. However when I actually open a Citrix session from Firefox it reports that it is version 10.5 ...
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0answers
113 views

Unpacking linux-image-3.16.0-34-generic (3.16.0-34.47) over (3.16.0-34.45)

I want to change Java 8 to Java 7. I planned to Remove Java 8 First. I run the Following cmd sudo apt-get purge oracle-java8-installer I got the Following Error Reading package lists... ...
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61 views

semantic_map-knowrob

I'm having some problems with the rospackage knowrob_gui knowrobGUI. I need it to build a semantic map that i have to integrate with my owl file.I started following this guide: But when i run the ...
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0answers
767 views

Install JavaFX scene builder 2.0 on Ubuntu 14.10

I am beginning my work on a JavaFX application for which I am using Intellij Idea ide. I have Java 8 installed on my system and I can see JavaFXSceneBuilder 1.1 in my system installed. But as I read ...
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0answers
68 views

Run jar from Nautilus - OpenJRE disappeared!

Although I'm frequently using the command line terminal, I find it very irritating when I cannot execute applications from Nautilus. I sometimes write small Swing based Java apps and I've just ...
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0answers
25 views

Unable to execute java programs on ubuntu 14 studio lite

I recently installed ubuntu 14.04 studio lite 32 bit. I have java apps that I created using netbeans 8/open jdk 1.7. They run fine using the netbeans debugger. However when I create the tar, it can't ...
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0answers
476 views

Firefox won't run java after installing 15.04

I installed ubuntu 15.04 yesterday. Firefox will not run the race viewers at igpmanager.com which use java. Ran java version and it returned the latest version of java. This machine is running an SSD ...
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0answers
100 views

Ubuntu, JavaFX, A fatal error has been detected by the Java Runtime Environment

I have already asked this question here: link to StackOverflow I have installed Ubuntu 14.04.02 x64, oracle JDK 1.8.4 and I try to run JavaFX8 project but I get this message in eclipse(not every time ...
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0answers
20 views

What does threatening to kill a process in gnome-system-monitor do?

If I play Minecraft, it freezes often (~every 20 sec); if I select the Java process in System Monitor and press delete, the end process box pops up. At this point, Minecraft unfreezes and accepts all ...
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0answers
213 views

Minecraft won't run on 14.04

I've had minecraft running on 12.04 for ages, but since upgrading to 14.04 it won't start. I'm using Oracle Java 8, but I've tried Oracle Java 7 and the default Java 7 that comes with Ubuntu. Here's ...
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0answers
188 views

Connecting to edelivery.oracle.com (edelivery.oracle.com)|23.57.214.140|:443… failed

I am running the following command sudo apt-get install oracle-java7-installer however I am receiving the following error Downloading Oracle Java 7... --2015-03-10 08:13:35-- ...
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0answers
103 views

Support / lifetime of OpenJDK 6+7 in Ubuntu 12+14 LTS

We have a few systems running OpenJDK 6 on Ubuntu Server 12LTS..we are planning on updating to Ubuntu Server 14LTS with OpenJDK 7. Unfortunately I cannot find any information about OpenJDK 6 + 7 ...
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297 views

Cannot able to connect to another host

After few self tests, I thought I'm having a telnet problem. So I am recreating a shorter version of this question I have two machines: cassandra is running on one machine using IP 172.17.1.XX. ...
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0answers
1k views

libjvm.so: cannot open shared object file: No such file or directory

Trying to install the rJava package on R, on my 14.10 ubuntu, using this code if (!require(rJava)) install.packages('rJava') got few errors related to java including jni problems, after ...
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0answers
67 views

Cannot remove openjdk without having an older version installed, how can I do so?

I am running Ubuntu 14.04.1 64-bit with Oracle Java installed, hence I would like to uninstall openjdk, but when I try to uninstall it via the command line I get the following output: ~$ sudo apt-get ...
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161 views

Java applications do not work in Ubuntu 14.04

I have had working Java environment til Yesterday, I cleared my all files and folders in /tmp/ then restarted my computer after that I can not get any Java applications (Chrome, Firefox, Thunderbird, ...
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29 views

JOSM file associations

If I download JOSM from the Ubuntu repo, I get a somewhat outdated version, but sound files attached to a GPX track will open directly in Totem, the associated application. If, however, I download ...
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0answers
126 views

Publish Java Swing Application on Ubuntu Software Center

I have installed Ubuntu 14.04 on a VirtualBox in Windows 8.1 and now I want to install Ubuntu SDK in it using the following commands: $ sudo add-apt-repository ppa:ubuntu-sdk-team/ppa $ sudo apt-get ...
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0answers
156 views

Freemind java problem in 14.04

Trying to run freemind 0.90 on Lubuntu 14.04. I have installed oracle java 7 and get following error: [warning] /usr/bin/freemind: JVM flavor 'java6' contains illegal characters [warning] ...
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0answers
173 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 ...
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0answers
112 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 ...