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
570 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
60 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
330 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 * ...
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
393 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
352 views

Netbeans cannot find java

So, I uninstalled Openjdk 7 and installed Oracle Java from webupd8. But after the installation Netbeans won't start. I have tried all the methods posted online about editing the netbeans.conf file and ...
1
vote
1answer
1k views

Firefox can't get the latest java version in ubuntu 15.04 in about:configs with iceatea-8-plugin, but oracle java version verify page can

In my laptop, I have openjdk1.6, openjdk-1.7, and openjdk1.8 installed. I can see all of them through update-alternative --config java. $update-alternatives --config java There are 3 choices for the ...
1
vote
1answer
306 views

Octave-4.0.0 Configuration step warnings in Ubuntu 15.04 (HDF5/jni.h not found)

I am trying to install Octave-4.0.0 from source following the instructions from the wiki page. I have installed every single dependency (optional too) mentioned on that page. In the configuration step ...
1
vote
1answer
624 views

Can't install anything via apt-get - openjdk errors

I have become unable to install anything on my Ubuntu 14.04 box. When I try to, I get the following error: No apport report written because the error message indicates its a followup error from a ...
1
vote
1answer
3k views

Android Studio Desktop Entry shows “OpenJDK shows intermittent performance and UI issues.”

On Ubuntu 14.04 I recently installed Android Studio v1.0.1 and noticed that it warns against using the OpenJDK due to "intermittent performance and UI issues." As recommended, I installed the Oracle ...
1
vote
1answer
463 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
931 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. ...
4
votes
0answers
194 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 ...
3
votes
0answers
441 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
169 views

Is there any problem with OpenJDK on Minecraft?

Mojang recommends using Oracle's JRE, but I see people using OpenJDK all the time. What are the advantages and disadvantages to using one or the other on Ubuntu, either in general or specifically as ...
2
votes
0answers
1k views

How to make openjdk-8 default java version and remove openjdk-7

I have intalled openjdk-8 (from official repo) with apt-get install openjdk-8-jre-headless openjdk-8-jre openjdk-8-jdk and updated alternatives with update-alternatives --config java now $ ...
2
votes
0answers
391 views

Apache ActiveMQ's main instance does not start in Ubuntu 14.10

I have installed the `activemq package in Ubuntu {12.04|14.04|14.10} In the LTS releases the service works fine, but in the 14.10 dist release the activemq does not work: # ln -s ...
2
votes
0answers
218 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
451 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
553 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
125 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
127 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
151 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
57 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
156 views

JRE failed even after open jdk as well as oracle

$ sudo update-alternatives --config java There are 2 choices for the alternative java (providing /usr/bin/java). Selection Path Priority Status ...
1
vote
0answers
125 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 ...
1
vote
0answers
104 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 ...
1
vote
0answers
202 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
320 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
147 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
235 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
74 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. ...
0
votes
0answers
19 views

How can i make java version1.8.0_91 my default java version?

When I type: java -version it says: joelle@joelle-Satellite-L745D:~$ java -version java version "1.8.0_91" Java(TM) SE Runtime Environment (build 1.8.0_91-b14) Java HotSpot(TM) 64-Bit Server VM ...
0
votes
0answers
25 views

Missing file from openjdk-7-dbg

I'm having trouble with the package openjdk-7-dbg on Ubuntu 14.04 (amd64). I've installed the package openjdk-7-dbg and according to the list of files there should be a file libjvm.so that is ...
0
votes
0answers
10 views

Frostwire giving me strange errors regarding library and stack guard. What do I do?

I just installed FrostWire 6.1.9 on Ubuntu 14.04. I ran it from the terminal, and I saw this in the terminal window: $ frostwire HOSTNAME IS aspire Starting FrostWire... Java exec found in PATH. ...
0
votes
0answers
30 views

SIGSEGV - in Ubuntu

If I run: gruinda@gruinda-LIFEBOOK-AH532:~/prism-3.3.1-src/bin$ sudo ./xprism It works fine, but if I run: gruinda@gruinda-LIFEBOOK-AH532:~/prism-3.3.1-src/bin$ ./xprism ...
0
votes
0answers
52 views

Ubuntu 14.04 Juniper network-connect crashes right after starting

My juniper network-connect tool crashes just after launching. It used to work until last week and has suddenly stopped working (probably due to recent update). $ ...
0
votes
0answers
36 views

How to handle Java and software installation

I am not a Java expert and I am trying to understand how java relates to different programs. After some program installations (latest versions) I think that the default java is changed and I ...
0
votes
0answers
39 views

unmet dependencies while installing java

I have the following error while trying to install java in my ubuntu-14.04. Can someone help me to resolve this problem ? Reading package lists... Done Building dependency tree Reading state ...
0
votes
0answers
25 views

Why does Ubuntu not want to remove old Java versions?

I finally got my 14.04 system up to date with Java and JDK 8 - as you can see in the screenshot, I still have JDK7 though. When I go to uninstall it, it says it will uninstall freemind and other ...
0
votes
0answers
25 views

chromium browser becomes unresponsive when Minecraft is in-game

I can't use Chromium browser (also affects Google Chrome) while playing Minecraft in another window. The browser becomes extremely unresponsive. If I exit the Minecraft game and just run the title ...
0
votes
0answers
64 views

Ubuntu Gnome 14.04.3 Webex won't share screen

I've been working all day to get Webex to run with Firefox on Ubuntu 14. It almost works. I can see screens shared by others, but cannot share my screen. I have seen that there are not found .so's ...
0
votes
0answers
31 views

Chrome fonts broken after Installing java on Ubuntu 14.04

I've been trying to solve this problem for 2 days and failed. I was trying to solve another problem on Ubuntu 14.04 with anti aliasing not working in WebStrom and ended up breaking everything. Chrome ...
0
votes
0answers
20 views

How to remove java 7 & eclipse version appropraite with java 1.6?

I'm new to java, and I tried to uninstall java 7 using this command: sudo apt-get purge oracle-java7-installer Then tested it by: sudo dpkg --list |grep -i jdk And got: bash /usr/bin/java no ...
0
votes
0answers
144 views

Can't use icedtea plugin without removing proprietary plugin (firefox)

What I'm trying to do: Switch from using the proprietary java plugin (java 1.8.51) to using the icedtea plugin. Apparently there still doesn't exist an icedtea-8-plugin for ubuntu 15.10 in the ...
0
votes
0answers
64 views

Permission problem with Java Applets

I have a problem with my Java installation. I can run every Java program, but if I need an Applet, the Browser displays a blank section! :/ If I start Firefox with the terminal, I see following ...
0
votes
0answers
307 views

OpenJDK 1.7 does not install on Ubuntu 14.04 LTS

The OpenJDK 1.7 JDK cannot be installed on Ubuntu 14.04 LTS. The machine is running on AWS sudo apt-get update sudo apt-get install openjdk-7-jdk results in: the following packages have unmet ...
0
votes
0answers
270 views

idea-ic IDE fails with “No Java JDK found” error, however my OS has Java installed and exported

I am facing an issue with Idea Intellij. I have Java installed and exported on my machine and it works fine for Pycharms. However, when I try to start Idea Intellij, it gives me Java not found error. ...
0
votes
0answers
199 views

Possible issues of installing OpenJDK 8 on Ubuntu 12

What are risks/possible issues of installing OpenJDK 8 from PPA (https://launchpad.net/~openjdk-r/+archive/ubuntu/ppa) on Ubuntu 12.04.5 LTS? I understand that OpenJDK 8 never will be in official ...
-1
votes
0answers
12 views

Error on java.jar

Exception in thread "main" java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at ...