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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130 views

OpenJDK, IcedTea security settings

I am a beginner Linux user. From my knowledge the system uses OpenJDK and IcedTea only when I connect to a SAP IDES server through SAP GUI JAVA adding a string in it to connect to that server. I use ...
4
votes
0answers
49 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 ...
4
votes
0answers
3k 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 ...
3
votes
0answers
28 views

Is there anything wrong with java-package?

There is a question about How can I install Sun/Oracle's proprietary Java JDK 6/7/8 or JRE? There are 23 answers at the moment, most of them are either explaining how to do it manually (unpack, move ...
3
votes
0answers
70 views

Ubuntu 15.04 crashes with scattered screen

I have recently installed 4GB DDR3 RAM (Innex) with an existing 2GB RAM (Dynet), currenlty it runs with 6GB RAM. I use Eclipse, Java, Chrome extensively for my development purpose But after this ...
3
votes
0answers
417 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 ...
3
votes
0answers
177 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
29 views

Problems with Java and Symlinks

i'm having troubles with the java jar files symlink. First of all i've to use java -jar command if i don't do it the java file doesn't run properly. Well the problem starts when i symlink the jar ...
2
votes
0answers
390 views

How to remove Eclipse Mars.1 installed using oomph installer

I've installed Java-EE Eclipse Mars.1 in Ubuntu 14.04. And now I have problems running different bundles of Eclipse. Besides this installer created a weird shortcut ...
2
votes
0answers
36 views

Using Screen inside /etc/init

I am trying to launch a .jar inside a screen session at boot using /etc/init Here is my script (pretty standard:) start on runlevel [2345] stop on runlevel [^2345] console log chdir ...
2
votes
0answers
41 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 ...
2
votes
0answers
29 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 ...
2
votes
0answers
515 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 ...
2
votes
0answers
472 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
votes
0answers
206 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 ...
2
votes
0answers
438 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 ...
2
votes
0answers
520 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 ...
2
votes
0answers
88 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
votes
0answers
558 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?
2
votes
0answers
157 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
349 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
163 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
531 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
votes
0answers
117 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
208 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
votes
0answers
111 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
votes
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: ...
1
vote
0answers
40 views

Can't find JDK for Unity3d development

I'm developing on Unity3d 5.2 a game which should be build for an Android. I use Ubuntu 14.04. I used: sudo apt-get install openjdk-7-jdk to install java. Set $JAVA_HOME and $PATH variables in ...
1
vote
0answers
50 views

Downgrade java from 1.7.0_91 to 1.7.0_79 on ubuntu

my ubuntu machine contains java 1.7.0_91. how to install java 1.7.0_79. how to Downgrade java from 1.7.0_91 to 1.7.0_79 on ubuntu java -version output: java version "1.7.0_91" OpenJDK Runtime ...
1
vote
0answers
19 views

Force file creation time for all files transferred to a directory

Is there a way in Linux to change the creation/last access time/last modified time by default, whenever new files are transferred or copied. Currently, I need to poll a directory for files and ...
1
vote
0answers
29 views

I can not save data to MySQL when is tomcat running

I have tomcat 7 and mysql 5.5.46. On my tomcat is running simple application which reads data from mysql. I have another java program that stores data in to mysql. When running tomcat and java ...
1
vote
0answers
68 views

Google Chrome using on Ubuntu 15.10 cause random black screen with logout

At work I daily use an HP Compaq Elite 8300 (Intel i7), with Ubuntu Desktop, Eclipse and Netbeans for develop linux embedded software, Java EE application and HTML/Javascript solution, and as browser ...
1
vote
0answers
52 views

how to fix unreadable tooltips(hover) in Eclipse Mars?

My eclipse version is: Eclipse Java EE IDE for Web Developers. Version: Mars.1 Release (4.5.1) Build id: 20150924-1200 ubuntu is: 14.04LTS when I'm using eclipse, I want to check the ...
1
vote
0answers
72 views

CLion ugly fonts

I have a problem with Clion fonts. They look really ugly. I tried different methods to fix that: Urshulyak solution JetBrains forum solution AskUbuntu solution I even installed infinality and ...
1
vote
0answers
35 views

Java jar launcher which preserves programmatically set icon and name

In my environment we have a lot of executable capsule jars which - depending on the environment they connect to - set a custom icon and name programmatically. This is done by calling ...
1
vote
0answers
45 views

Kernel keeps killing Java process due to Out of Memory

I am trying to solve a CPLEX problem using the Java library but the kernel keeps killing my process due to "Out of Memory". I've tried setting memory limits on the CPLEX program and I've tried ...
1
vote
0answers
81 views

Global Menu for JavaFX Applications

I know that we can enable global menu for Java Swing applications using Jayatana. But I am searching for global menu support for JavaFX applications. After searching on it, I have found that ...
1
vote
0answers
36 views

Bash auto-completion won't work for java command

I have a folder that has one java source (.java) and one java (.class) class file. I try to get the autocomplete functionality of bash by pressing <tab> after the java or java MyCl in order ...
1
vote
0answers
429 views

minecraft error (java 8). (game output)

So i have been experiencing this problem for a while and cannot figure it out on my own, so i thought it would be easier to ask other people: I need help getting the minecraft launcher to launch MC ...
1
vote
0answers
49 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 ...
1
vote
0answers
88 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 ...
1
vote
0answers
45 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 ...
1
vote
0answers
105 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 ...
1
vote
0answers
38 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 ...
1
vote
0answers
63 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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vote
0answers
75 views

odd xorg hang when starting intellij

I have a REALLY odd hang that I just cant figure out. When I start intellij (using java7/java8) my terminal will accept input for a few minutes. Then it'll stop accepting any input. vmstat shows the ...
1
vote
0answers
446 views

Ugly/Non Anti-Aliased fonts in Java-Swing Applications

I've recently switched to Ubuntu and I've installed Oracle's Java JDK 8u45 (32 bit) using the webupd8team/java repository. Everything seems to be working fine except that the Java-Swing applications ...
1
vote
0answers
118 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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vote
0answers
654 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 ...
1
vote
0answers
175 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... ...