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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4
votes
2answers
258 views

How to unlock file, locked by a process

The file is locked by a process, java in my case. I only want the lock to be released. lsof | grep /home/user/workspace1 A temporary solution was to 'End Process' from 'System Monitor'. But ...
1
vote
1answer
124 views

JavaFX 8 not working in Ubuntu 12.04

I am using Netbeans 8.0 but in JavaFX 8(simple), and 3D applications are not running successfully. It shows an error: Gen6+ requires Kernel 3.6 or later. java: ...
1
vote
3answers
299 views

Unable to install LanguageTool 2.5 extension for LibreOffice 4.2 on Ubuntu 14.04

I am not able to install LanguageTool extension for LibreOffice. Getting exception when I try to install it. p.s. Somebody says that the solution is installing openoffice.org-java-common package but ...
0
votes
1answer
2k views

gzip: stdin: unexpected end of file -> problem in extracting jdk-7u55-linux-x64.tar.gz

I have downloaded 'jdk-7u55-linux-x64.tar.gz' When I execute following command to extract, sudo tar xvzf jdk-7u55-linux-x64.tar.gz also tried, sudo tar xvf jdk-7u55-linux-x64.tar.gz sudo tar xf ...
8
votes
2answers
5k views

Eclipse (ADT) crash Failed to write core dump. Core dumps have been disabled

i found my problem here: how to fix “Failed to write core dump. Core dumps have been disabled” error while running java and here: Eclipse crashing on startup and here: Eclipse continue crash Nothing ...
0
votes
0answers
14 views

I'm having a lot of trouble installing and running Java [duplicate]

New to Lubuntu. I'm having trouble installing Java. Can anyone point to a 'site where I can get some clear & simple how-to? thanks
1
vote
1answer
104 views

Error when formatting Hadoop JAVA_HOME is not set

I get the fallowing msj when i try to format my cluster Re-format filesystem in /app/hadoop/tmp/dfs/name ? (Y or N) Y 14/04/28 10:20:16 INFO util.GSet: VM type = 64-bit 14/04/28 10:20:16 INFO ...
1
vote
2answers
45 views

Install Java 6 for a single project while leaving the default for the rest of the system at Java 7

In order to install a development environment for an older version of Android, I need to have Java 6 installed. I already, however, have Oracle Java 7 installed on my system and would like to keep it ...
1
vote
0answers
508 views

Eclipse stopped working with Ubuntu upgrade to 14.04

Two days ago I upgraded to the latest Ubuntu 14.04. Everything was working fine, until I tried to open Eclipse that I use for Java development. It shows the loading window but the program never loads. ...
1
vote
1answer
288 views

Eclipse not launching

I have installed Ubuntu 14.04, I have installed Eclipse using Ubuntu Software Center. But Eclipse is not opening, when I click it is not opening or showing any error message it is very silent. Output ...
2
votes
3answers
2k views

Aptana Studio 3 doesn't work after upgrade from Ubuntu 12.04 to 14.04?

When I upgraded from Ubuntu 12.04 to 14.04 Aptana Studio 3 doesn't work any more. When I try to open it after a few minutes it just closes, but when I open it in the terminal I got this error massage. ...
0
votes
1answer
113 views

How to launch .jar files? [duplicate]

I am trying to launch Minecraft.jar and I cannot make it boot as an executable. I have gone into the properties and set it to executable, and I have installed jdk-7u55-nb-8-linux-x64.sh with and ...
0
votes
2answers
641 views

Eclipse fail to start in a clean workspace

I'm having a problem starting any version of eclipse in any kind of workspace (brand new or with data already). The problem started when I upgraded my OS from Ubuntu 13.10 to 14.04, and tried to ...
0
votes
0answers
61 views

When installing/ downloading something, ubuntu (14.04LTS) locks by itself

I have a question regarding the auto-lock of Ubuntu. When I'm downloading something, for instance: Yesterday I downloaded oracle jdk8 using the terminal cause I had to add a ppa. Now my download was ...
0
votes
1answer
170 views

Running IBM Data Studio 4.1.01 on Ubuntu 14.04

I've successfully installed IBM Data Studio and its Web Console on Ubuntu 14.04, and the Web Console runs like a dream and I can connect to my DB2 databases fine. However, when I try and run the Data ...
1
vote
0answers
102 views

Cannot run jBoss on ubnutu 12.04

I am trying to install jBoss application server on Ubuntu 12.04. I am using Vagrant. Here is what I am getting: vagrant@precise32:/usr/share/jboss-as-7.1.1.Final/bin$ ./standalone.sh ...
0
votes
1answer
131 views

Error executing Xilinx ISE Design Suite .bin file(java xsetup)

I'm, trying to build Xilinx_Vivado_SDK_2014.1_0405_1_Lin64.bin on ubuntu-12.04 Got the below error: ..... ...
0
votes
1answer
119 views

Where is my JDK?

I installed Oracle Java 1.8 using ppa. When I list java alternatives, I can only see 1.8 JRE! But when I do javac -version I can see javac 1.8.0_05 sudo update-alternatives --config java There are ...
0
votes
1answer
169 views

java applets crashing in 14.04

phet simulations (java applets) continually crash in 14.04 after execution. Icedtea starts loading then the app, gets to 100% then crashes and i get an error message to us the console to clear my ...
0
votes
1answer
1k views

Eclipse can't find Java after upgrade to 14.04

After upgrade to Ubuntu 14.04 Eclipse 3.8 can't find any installed Java VM. I have the Sun JDK 1.7 and the openJDK7 installed. I have tried modifying the eclipse.ini to point it to one of the ...
0
votes
0answers
1k views

Java & Flash problem Chromium Lubuntu 14.04

I am running Lubuntu 14.04 LTS, i have installed icedtea and flash player, they both work in Firefox but i cannot seem to make them work in Chromium. I tried purging chromium and java and flash then ...
0
votes
5answers
385 views

Convert .jar to executable

My project is to develope an installer which is an executable for all three platforms Windows, Mac and Ubuntu.As you know the executables on Windows, Mac and Ubuntu are .exe, .app and .deb ...
0
votes
0answers
19 views

Eclipse for php and java packages

I installed Eclipse for PHP and Java projects. I tried to create a project and files and realized that there are no packages for developing PHP and Java. Is there any way to install those packages for ...
1
vote
1answer
5k views

Java plugins are not detected after upgrading

After an upgrade to Trusty Tahr (14.04), it seems Java has ceased to work in several browsers (tested on Firefox, Chromium, and Chrome). ubuntu-restricted-extras is installed, Oracle-Java was ...
1
vote
2answers
414 views

Error executing Xilinx ISE Design Suite .bin file

I'm trying to execute a .bin file, specifically "Xilinx ISE Design Suite", and I get this error message: ./xsetup: 12: [: 64: unexpected operator ./xsetup: 37: [: unexpected operator ./xsetup: 23: ...
0
votes
0answers
74 views

How do I put my executable file on desktop [duplicate]

I downloaded a Linux version of Keepersecurity app and followed the setup instructions INSTALLATION INSTRUCTIONS: Create a folder to put the app $ mkdir KeeperDesktop Extract ...
1
vote
1answer
70 views

Eclipse IDE hello world problem

I'm having problems running a simple java program "Hello world" i had installed the Eclipse Java EE IDE from eclipse site and before it i had installed jdk btw im using ubuntu 14.04 Any ideas ...
0
votes
2answers
751 views

Is actual version of Chromium browser (34.0.1847.116) compatible with Oracle Java 7 browser plugin?

I can not make it work nor find an official confirmation of compatibility. Oracle Java 7 plugin works fine with Firefox but fresh Chromium browser installation does not even list it at ...
0
votes
2answers
142 views

Adding JAVA_HOME (JDK) in .bashrc

I just installed Ubuntu and am Java 7u55 (JDK) and am trying to configure JAVA_HOME as an environment variable. In ~/.bashrc I added: # Exports JAVA_HOME=/home/myuser/sandbox/java/7u55/jdk1.7.0_55 ...
1
vote
0answers
139 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?
14
votes
2answers
12k views

java plugin in Chromium

Icedtea-7-plugin installed but it does not appears in the list in about:plugins in Chromium. Not able to execute java applets. Tried installing Icedtea-7-plugin but in vain. Using openjdk7 in 14.04
1
vote
1answer
194 views

Matlab install error: Simulink 3D Animation Toolbox

I'm trying to install Matlab 8.0.1 (R2013a) on Ubuntu13.10 64bit. There was some problem when I installed all the packages (inclusive of Simulink 3D Animation Toolbox) and other packages preceding it ...
0
votes
0answers
20 views

OpenJDK install problem

I try to install on a fresh install of Ubuntu 12.04, and all it gives me is this error. "The action would require the installation of packages from not authenticated sources." Last time I installed ...
0
votes
2answers
2k views

Juniper network connect on Ubuntu 14.04 cannot find 32 bit Java

I have Ubuntu x64 and trying to install Juniper network connect. Installed 64bit jre/jdk, icedtea and 32bit jre sudo apt-get install openjdk-7-jre icedtea-7-plugin sudo apt-get install ...
7
votes
2answers
4k views

Flash and Java plug-ins in Chromium lost after upgrade to 14.04

I've just upgraded 12.04 to 14.04. Java and flash plug-ins are lost from Chromium. I have Openjdk7 installed with Icedtea and adobe flash plug-in for Firefox. sudo cp ...
-1
votes
1answer
34 views

How to set variables for java

On ubuntu 14, i have the same problem : when i run android studio, java packages are not find. I need to do export command ? export PATH=${PATH}:"/usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java" ...
0
votes
0answers
70 views

Problems installing Zimbra on VPS

I have some problems installing Zimbra Collaboration on my VPS with Ubuntu server 12.04. I tried many solutions found on google, but with no results :( Configuring SNMP...done. Setting up ...
2
votes
1answer
35 views

How to start a service living on a Windows partition

I am developing a service on my Windows 7 / Ubuntu 13.04 dual boot machine. My service lives on an NTFS partition. It is written in Java and should work on both platforms. Just to make things clear, ...
0
votes
0answers
107 views

downgrade Java from 1.7u51 to lower update than 51

How do I downgrade Java from 1.7u51 to 1.7u45 or anything lower than u51 ?
1
vote
1answer
31 views

Which package provides a given jar?

How can I determine which apt package I should install to have a certain jar file? BTW: I'm actually looking to solve XML parser factory has not been configured correctly: Provider ...
0
votes
1answer
121 views

Ubuntu 12.04 Eclipse install

I feel like a tool asking this, but I've spend a couple of hours trying to get it to work with no luck, so I'm sucking it up and asking. I followed the directions here... How to install Eclipse? ...
1
vote
3answers
107 views

How do I configure Java security settings, etc?

I have installed JDK 7, but how do I configure settings like security, etc? On Windows, I can set up JDK 7 from Control Panel -> Java.
0
votes
0answers
150 views

Java won't run properly in Chrome - IcedTea

I installed OpenJDK 1.6 and 1.7 to my system, and IcedTea for Chrome. When I go to the JRE detect page, after the IcedTea screen, a grey box appears. I tried every way I could find in the internet, I ...
1
vote
0answers
70 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 ...
0
votes
0answers
37 views

Reload profile with java version

.profile has export JAVA_HOME=$DEV_HOME/tools/jdk1.6.0_45 # export JAVA_HOME=$DEV_HOME/tools/jdk1.7.0_51 # export JAVA_HOME=$DEV_HOME/tools/jdk1.8.0 export PATH=$PATH:$JAVA_HOME/bin I work with ...
0
votes
1answer
36 views

Trying to execute update-alternatives command specified in an instrutional document

I am trying to execute the following command sudo update-alternatives "/usr/local/bin/java" "java" "/usr/java/jdk1.6.0_45/bin/java" But I keep receiving the error message update-alternatives: ...
0
votes
0answers
28 views

Audio libs cannot load when running java aplet from web

When logging in to my company web sites internet conferancing app the following error appears "unable to load audio libs". The site runs a java aplet to allow multi user conferancing. A soluition to ...
0
votes
0answers
183 views

Problem with setting up path in Eclipse for sdk

I am currently working on Ubuntu 12.04 LTS and I have installed Eclipse from the Ubuntu Software Center and then according to the procedure suggested I dealt with the ADT. Next I had to install SDK ...
-1
votes
1answer
79 views

How to set up an environment to develop Android apps in Ubuntu that doesn't have internet Connectivity?

I have an Ubuntu laptop in which I need to develop Android apps. I know that all that software could be downloaded from the software center but the problem is that I don't have internet connectivity ...
0
votes
2answers
157 views

File not found on http://localhost:8080/

I have just installed Tomcat7 using apt-get install tomcat7. In CATALINA_HOME I can see default index.html file and it runs fine using localhost:8080/. Now I have placed a .war file to deploy in this ...