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

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5
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1answer
307 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
47 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
299 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
104 views

Set All .jar FIles As Executable

I run Java programs alot on my computer. It runs the latest version of OpenJDK, which is OpenJDK 7. When I try to run a .jar file, it gives me an error saying that the .jar file was not marked as ...
1
vote
1answer
151 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
239 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
28 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
37 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
55 views

NetBeans has broken interface with OpenJDK

Sorry for English. Usually (say, at 4/5 of times), when I start NetBeans, interface is partially broken. For example, menu items are appearing and at once disappearing after click; some parts of ...
0
votes
1answer
56 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 ...
0
votes
1answer
108 views

How to install Eclipse for Oracle Java on Ubuntu 12.04

I have Oracle Java 7 on my system and want to install Eclipse and make it use Java 7 instead of openjdk. I installed Eclipse earlier using synaptic but after doing check updates it didn't work ...
0
votes
1answer
270 views

Ubuntu 13.10: Upgrade interrupted because of openjdk-7

I was running an apt-get upgrade (not version upgrade, just normal), when I got this message: You might want to run 'apt-get -f install' to correct these. The following packages have unmet ...
0
votes
1answer
102 views

Problems running java websites

I'm having problems with openjdk7 and icedtea7. In one computer, which works with ubuntu 13.10, I have installed openjdk7 and icedtea7. In the other computer, which works with ubuntu 12.04 and is an ...
0
votes
1answer
19 views

ALEKS plug-in on 12.04

I'm running 12.04 and have successfully installed the latest version of JDK. I've followed the instructions on this page to install the plug-in for ALEKS, and that worked. But when I log in to ALEKS ...
0
votes
1answer
81 views

Java -jar using Oracle lib

I have installed java-7-openjdk and it works well, but I need to use JavaFX in a project so I download "Java SE" (all packages) form Oracle and I store them inside/usr/lib/jvm/jdk1.7.0_45. Now I want ...
0
votes
1answer
286 views

OpenJDK Java 7 missing from “Open With” under file Properties

Ok. I have read through probably two-dozen posts and articles, and still can't seem to find an answer. I have installed OpenJDK-7 and am trying to set it as the default to open .jar files ...
0
votes
1answer
329 views

Ubuntu 12.04 problem installing thinkorswim

I have follow the instructions listed in the forum as well as the thinkorswim website. I can get all the way to the launch point for showing the desktop and it won't show I just get a black screen and ...
0
votes
1answer
70 views

Frostwire does not start

I downloaded Frostwire from this page. After downloading, it appeared in the Software Center and supposedly installed it. The problem is simple: Frostwire does not open, the icon blinks but nothing ...
0
votes
1answer
113 views

Frostwire not opening

I have just donwloaded the application FrostWire. I was trying to open it, but it just won't open. The icon does it's flashing, and then it goes back to the normal background, no windows from that app ...
0
votes
1answer
166 views

Minecraft turn off PC on 11.04

I had install Ubuntu 11.04 on two PC. On one everything work perfect, but another after some time turn off computer. I tried a lot of ideas(reinstall, openJDK 7(give just black screen), but all still ...
0
votes
1answer
180 views

how do i get imagej to work with oneric 11.10 64-bit with openjdk-7?

I'm not sure why I can't get imageJ (http://imagej.nih.gov/ij/index.html) to start on my computer running oneiric 64-bit. sudo apt-get install imagej Installation is fine, but it won't start (not ...
2
votes
0answers
200 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
62 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
55 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
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0answers
30 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
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0answers
239 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
91 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
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0answers
106 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
105 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
2k 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 ...
1
vote
0answers
125 views

Blank Firefox/Chrome/Minecraft when using OpenJDK Runtime Environment 6

I am using Ubuntu 11.04 Natty Narwhal and every time I go on OpenJDK Runtime Environment 6 (playing Minecraft) and open Firefox/Chrome it always comes up with a blank page. But if I open ...
0
votes
0answers
28 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
9 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
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0answers
29 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 ...
0
votes
0answers
21 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
33 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
291 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
60 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
94 views

netbeans unable to detect jdk

I've downloaded netbeans.sh from the site and when i install it , It asks to specify JDK folder which i specify it to /usr/lib/jvm/java-7-openjdk-amd64 but the installer says "The specified JDK ...
0
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0answers
185 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
32 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 ...
0
votes
0answers
2k views

Setup JDK for android studio

I was setting up android studio and got this So I followed the answer here and used sudo update-alternatives --set java /usr/local/java/jdk1.7.0_17/jre/bin/java sudo update-alternatives --set ...
0
votes
0answers
70 views

Problem with Java-VTK while running a Java-based program

While trying to open some files in a java/VTK visualization program (called lbview), i faced with this error: dist: [jar] Building jar: /home/alireza/lbview/target/lbview.jar run: [java] # ...
0
votes
0answers
114 views

I want to run .jre apps on my ubuntu 12.04

I have installed JRE and also JDK.I want to run some appliction in .jre format.(I think they are java apps). But I do not know how to run those in my Ubuntu 12.04 .Please someone may help me...
0
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0answers
625 views

cannot open eclipse indigo in Ubuntu 12.04 with openjdk-7-jdk installed

I have the openjdk-7-jdk installed, the java -version java version "1.6.0_27" OpenJDK Runtime Environment (IcedTea6 1.12.6) (6b27-1.12.6-1ubuntu0.12.04.2) OpenJDK 64-Bit Server VM (build 20.0-b12, ...
0
votes
0answers
180 views

How do I install Openjdk-6-jre-headless in synaptics package manager

I have tried to install it by simply clicking the box and then clicking install(which usually works) but it says openjdk-6-jre-headless: Depends: ca-certificates-java but it is not installable ...