Is a free and open source implementation of the Java programming language. It may be installed from the software centre.

learn more… | top users | synonyms

5
votes
1answer
360 views

How do I disable Apport from including a core dump?

Intro: apport is a python applicaton running on ubuntu which automates bug reporting. In case of a crash it determines which application crashed, and auto generates a detailed report on the crash, ...
2
votes
1answer
51 views

Are there any reliable sources with more frequent jdk icedtea package releases?

I use the canonical repository for retrieving updates from the jdk icedtea, but it seems that it is lagging a lot behind what is supposed to be the latest stable version as per the icedtea website ...
2
votes
1answer
2k views

Installing openjdk-6-jre:i386 on Ubuntu 12.04 64 bit: broken dependencies

I wa strying to install openjdk-7-jre:i386 in order to access to the university's VPN. I've a machine with Ubuntu 12.04 LTS (precise) 64 bit. However, when I try to install openjdk-6-jre:i386, sudo ...
2
votes
1answer
327 views

java MainServer gives java.lang.UnsupportedClassVersionError: Unsupported major.minor version 51.0

Compiling is easy but when using java to run the programs, it gives Exception found. I am using Ubuntu 12.04 without internet connections. Also, installed Oracle JDK7 and JRE7. Also did the ...
1
vote
1answer
81 views

Unable to update openjdk7 and 6 with apt-get

System: Ubuntu 12.04.4 LTS, Server I can't update openjdk7 and 6 with apt-get. It always ends with this failers: Err http://security.ubuntu.com/ubuntu/ precise-security/main openjdk-6-jre-headl ...
1
vote
1answer
200 views

Removed JDK6, installed JDK7. JAVA_HOME broke and javac not installed

I am finding that the javac is not in the java-7-openjdk-i386 package. Problem 1: $ javac The program 'javac' can be found in the following packages: * default-jdk * ecj * ...
1
vote
1answer
336 views

Run .JAR as application

I've noticed that when running a .JAR file the unity launcher can be quite annoying. If the JAR file is run in a terminal then the launcher icon is the one set in the application, as expected. ...
1
vote
1answer
2k views

How to find java path and make a shortcut with jar files?

I'm very new to Ubuntu, installed 12.04 for the first time a few days ago. So I basiclly got a game (feedthebeast, mod for minecraft). Now the jar file which I downloaded works just fine, but I find ...
0
votes
1answer
40 views

I can't install openJDK 7 in ubuntu 12.10 (32-bit)

Using Ubuntu Software Center I tried to install OpenJDK 7 but got the following notification. **Package dependencies cannot be resolved** This error could be caused by required additional software ...
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
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 ...
0
votes
1answer
210 views

Java iced tea isnt working with runescape, ubuntu 14.04

java -version java version "1.7.0_55" OpenJDK Runtime Environment (IcedTea 2.4.7) (7u55-2.4.7-1ubuntu1) OpenJDK 64-Bit Server VM (build 24.51-b03, mixed mode) This is a copy and paste from my ...
0
votes
1answer
465 views

Unable to install updates. Unmet dependencies icedtea-7-jre-jamvm and openjdk-7-jre

I am a newbie please help. Unable to install updates. Details shows: The following packages have unmet dependencies: icedtea-7-jre-jamvm: Depends: openjdk-7-jre-headless (= ...
0
votes
1answer
301 views

Netbeans installation doesn't work

While trying to install Netbeans 8.0 in my Ubuntu 14.04 I get the following error: Can`t initialize UI Running in headless mode Exception: java.awt.HeadlessException thrown from the ...
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 ...
3
votes
0answers
76 views

Cannot sudo apt-get -f install because of jdk problem

I am completely stumped. The problem is as follows. user@mycomputer:~$ sudo apt-get -f install Reading package lists... Done Building dependency tree Reading state information... Done ...
2
votes
0answers
167 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 ...
2
votes
0answers
266 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
223 views

Java installed, command not working

I have installed java but I could not get any java command to work! Below shows what I get when I try to run java commands: sultan@ubuntu:~$ java The program 'java' can be found in the following ...
2
votes
0answers
75 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???
1
vote
0answers
58 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 ...
1
vote
0answers
138 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 ...
1
vote
0answers
103 views

Java still dont recognize horizontal scroll (right click) 14.04

I am totally trackpoint fan, I use it all the time and have disablet my touchpad. Due to my study I work a lot with MATLAB, but MATLAB uses Java, and horizontal scroll does not be recognized by java ...
1
vote
0answers
121 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 ...
1
vote
0answers
34 views

Installing oracle jdk without remove openjdk

I would install Oracle jdk without remove openjdk, could that bring any problem to my Ubuntu 12.04 configuration? thanks
1
vote
0answers
309 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 ...
1
vote
0answers
106 views

Symbolic link error to Java / LIBJVM

All, When trying to install postgresql, I get the following error: /sbin/ldconfig.real: usr/lib/jvm/java-1.7.0-openjdk-amd64/jre/lib/amd64/jamvm/libjvm.so is not a symbolic link I think this is ...
1
vote
0answers
130 views

screencast-o-matic keyboard shortcuts - I can't get them to work

I switched to ubuntu a few months ago and I have not yet been able to understand why Screencast-o-Matic keyboard shortcuts don't work. Apparently they should work on ubuntu in the same way as on ...
1
vote
0answers
116 views

jdk installation error

sudo apt-get install oracle-java6-installer [sudo] password for taha: Reading package lists... Done Building dependency tree Reading state information... Done Suggested packages: ...
1
vote
0answers
72 views

While installing jdk

I'm trying to install java using the WebUpd PPA. After adding their PPA and updating, I try: sudo apt-get install oracle-java7-installer and it gives me an error Oracle JDK 7 is NOT installed. ...
1
vote
0answers
3k views

not able to install javaws

I need to use java web start to run TopCoders ContestAppletProd.jnlp. When I try to run the the arena I get Java not found error. Upon selecting the option "using Java Web Start" the jnlp file ...
0
votes
0answers
20 views

Uninstall oracle and install openjdk back?

I followed the instructions from the answer of this question but it didn't work: How to remove Oracle JDK I Just installed oracle jdk following instructions from this link: ...
0
votes
0answers
26 views

Message: JAXP00010001: The parser has encountered more than “64000” entity

I'm running CKAN.org on Ubuntu 12.04 LTS. Perfoming certain requests results in an error in the apache-log: [Thu Oct 30 13:51:15 2014] [error] [client 127.0.0.1] SearchIndexError: HTTP ...
0
votes
0answers
66 views

Can't create Virtual Android Device in Ubuntu. Fatal error detected by JRE

I installed Eclipse and OpenJDK java 7. Ran the command android avd in terminal and then specified the specs for my virtual android device. Upon clicking 'OK' button. This is what it showed.! ...
0
votes
0answers
40 views

Installing maven w/out X11/Dependency-hell?

I'm trying to provision my Vagrant box with some Java tools. Unfortunately, I get into dependency hell all the time. I had to use a script to dl and install Oracle Java, because openjdk-7-jdk is ...
0
votes
0answers
131 views

openjdk-7-jre-headless issue prevents updates/installs

was running 12.04 x64 just fine, decided to upgrade to 14.04. Several apps I use were not updated and were removed at the upgrade. ~$ uname -a Linux xxxyyy 3.13.0-34-lowlatency #60-Ubuntu SMP PREEMPT ...
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
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
0answers
23 views

Searching for Java Path

I'm trying to install predictionIO using Terminal. At a point of the install process, it wants to download Hadoop and for this, it asks for the java path. I'm trying to find this path and until now, I ...
0
votes
0answers
2k views

How do I install Eclipse Luna and JDK8 to work in Ubuntu Studio using XFCE?

I tried following guides online to install Eclipse, but I'm not sure if it was supposed to work for my distro. I'm also unsure if openJDK 8 is the same thing as JDK8 for linux and whether or not it's ...
0
votes
0answers
201 views

Minecraft launcher screen stuck on “Starting Launcher”

I have openJDK7 running, it is able to execute, and I downloaded it from the site normally I don't know what is going on any help?
0
votes
0answers
65 views

finding where jdk path has been set in ubuntu

Please help me i am not able to find out where i have set the jdk path in ubuntu 12.04 LTS. I have checked /etc/profile and .bashrc files. Please help me to figure it out. Any help will be really ...
0
votes
0answers
68 views

openjdk icedtea firefox loops “connecting”

Ubuntu 14.04, openjdk-7-jre_7u55, icedtea-7-plugin_1.5, firefox_30.0 FF > Tools > Add-ons > Plugins > IcedTea-Web 1.5 = Ask to Activate URL = http://www.anbg.gov.au/cpbr/cd-keys/rfk/ then click ...
0
votes
0answers
111 views

Openfire installation using Openjava

Openfire runs successfully with Oracle Java (Sun Java) without much of an issue on Ubuntu OS. However, Ubuntu discontinued Sun Java (Oracle Java) from the repos and since then one has to install Sun ...
0
votes
0answers
63 views

SmartReader ACR38U doesn't work with Icedtea-7-plugin in Firefox

I can't to use my CardReader ACR38U with Icedtea-7-plugin in Firefox. :( CardReader in pcsc_scan work good, without problem. How I can fix this? Ubuntu 14.04 Firefox 29. java version "1.7.0_55" ...
0
votes
0answers
2k views

Icedtea-7-plugin don't work in Chromium, doesn't show in about:plugins

I'm newbie user of Ubuntu 14.04. I have trouble with: Icedtea-7-plugin don't work in Chromium. It doesn't shows in about:plugins. How I can I fix it? I did: sudo apt-get install icedtea-7-plugin ...
0
votes
0answers
553 views

Android ROM building. Issue with JDK

The other day I was trying to build Android ROM using the AOSP code. I had setup the environment according to the steps mentioned in their guide but I keep getting this error during the same ...
0
votes
0answers
255 views

I just try to install Netbeans but there is more problem with JDK

Hi, im new at ubuntu and i want to use netbeans. I downloaded netbeans from its web site then I wrote this commands to the line hakki@hakki-K55VM:~/Downloads$ chmod +x netbeans-7.4-linux.sh ...
0
votes
0answers
35 views

Select a JVM (Java Virtual Machine) on a per program basis

I recently had to select openjdk7 as the default Java implementation on my Ubuntu 12.04. I had to do this because some Eclipse plugins required Java 7 in order to work correctly. I would like to know ...
-1
votes
0answers
23 views

Hadoop gives Error localhost: Error: JAVA_HOME is not set.?

I'm using Ubuntu. I have installed Java Hadoop configured it as single Node. i have also added environmental variable named HADOOP_HOME,JAVA_HOME in .bashrc file. When i was trying to run Hadoop using ...