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

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2
votes
2answers
24k views

How to setup Java-Home and Path in Ubuntu 12.04

we are new to Ubuntu.Recently we changed my server OS to ubuntu 12.04 from windows 7 . every one have their own login details. one of my college installed Open-Jdk7. I asked him, where you installed ...
0
votes
1answer
12 views

openjdk-7 gdb list main.c sources error

I'm currently struggling with debugging openjdk in Trusty Tahr. I already installed opejdk-7-jdk openjdk-7-dbg. When I issue gdb java I see it reads the symbols properly, but when I ask to list the ...
22
votes
3answers
30k views

How to install OpenJDK 8 on 14.04?

IMPORTANT: If you need this in 14.04, vote for this bug: https://bugs.launchpad.net/ubuntu/+source/openjdk-8/+bug/1341628 Java 8 is now available according to ...
0
votes
0answers
8 views

Ugly fonts in Java Swing Applications even with openjdk-fontfix

I have a problem with Java Swing applications such as Intellij Idea or Pycharm. I use Ubuntu 14.04 with openjdk-fontfix and jayatana PPAs installed. All fonts in Pycharm, for example, are rendered ...
3
votes
4answers
4k views

freemind wont run despite OpenJDK JRE installed

I install freemind from USC Ubuntu 12.04, but it failed to run with the following error: " [warning] /usr/bin/freemind: No java runtime was found [error] /usr/bin/freemind: Unable to find an ...
-1
votes
0answers
13 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 ...
0
votes
1answer
25 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 ...
3
votes
3answers
6k views

How to make Firefox use the newest Java version, which is already installed?

Apparently, I have OpenJDK 6 JRE (openjdk-6-jre 6b27-1.12.6-1ubuntu0.12.04.2) and 7 JRE (openjdk-7-jre 7u25-2.3.10-1ubuntu0.12.04.2) installed in parallel – I don't know why I have both of them, I ...
0
votes
1answer
48 views

IcedTea Doesn't Run Properly in Firefox

I have Java 7 installed for Ubuntu 12.04 and I have IcedTea installed in Firefox (33.0). Some Java plugins are not working correctly. For example: starting from the IcedTea-Web-Tests (see the IcedTea ...
1
vote
0answers
20 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 ...
4
votes
4answers
4k views

Unable to install icedtea plugin on Utopic Unicorn 14.10

Trying to install icedtea-7-plugin on 14.10 x64 gives an error. apt-get install icedtea-7-plugin . . . Selecting previously unselected package icedtea-netx:amd64. . . . Processing triggers for ...
2
votes
1answer
9k views

How to set the JDK for Android Studio?

I can't compile a default new project for Android 2.1 because(?) the JDK used by Android Studio is JDK 1.7 but it should be JDK 1.6. To change it I go to File -> Project Structure and try to find the ...
-2
votes
1answer
24 views

I want to install software-center , but i got this error, Please give solution

pooja@pooja-Inspiron-N5050:~$ sudo apt-get install software-center Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f ...
0
votes
0answers
22 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
2answers
127 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
0answers
29 views

I have an Issue With Java! Scottrade! [duplicate]

My problem is that I downloaded a file with the the extension .jnlp . I have the necessary installed requirements Java Runtime Environment (JRE) 7 openjdk. When I try to open the necessary/required ...
0
votes
1answer
61 views

too many JDK's after installing openjdk-8

I upgraded to Ubuntu gnome 14.10 this weekend. I've been curious to try out JavaFX, and noticed that there is now an openjfx package available. So I apt-get installed openjdk-8-jdk and openjfx and ...
0
votes
0answers
53 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.! ...
38
votes
6answers
68k views

Problems with Eclipse and Android SDK

I installed Eclipse, openjdk6 and downloaded and extracted the sdk manager file. Now, When I created an Android project I got the following error: 2012-06-06 18:44:40 - contactManager] ...
1
vote
1answer
89 views

errors with sudo apt-get update after sudo apt-get autoremove openjdk-7-jre

Everything was fine before executing this command sudo apt-get autoremove openjdk-7-jre. After this openjdk-7-jre got removed.Then when i try sudo apt-get update i get the following errors: 0% ...
1
vote
1answer
494 views

Android Studo showing :“OpenJDK shows intermittent performance and UI issues.”

I have recently installed Android Studio on my Ubuntu 12.10 64bit machine, but every time that I opened it kept giving the following error "OpenJDK shows intermittent performance and UI issues. We ...
0
votes
0answers
29 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
16 views

openjdk-7-jre missing files /usr/lib/jvm/java-7-openjdk-amd64 [duplicate]

I am trying to install openjdk-7-jre on my Ubuntu machine. I previously had the folder /usr/lib/jvm/java-7-openjdk-amd64. However I needed to test a script which installs this package, so I deleted ...
2
votes
1answer
62 views

Do I need to Install jdk?

I realized that my java compiler wasn't up-to-date on my ubuntu 12.04 $ sudo update-alternatives --config javac There are 2 choices for the alternative javac (providing /usr/bin/javac). Selection ...
0
votes
0answers
121 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 ...
1
vote
3answers
308 views

Java is not working in any browser

I'm using Ubuntu 14.04 , and I've used the 12th edition and 13th and it was always the same problem for me, java is NOT working on any of my browser : all applets aren't functional, I can't login to ...
2
votes
2answers
3k views

OpenJDK default options to always use the server VM

I got a warning message: jvm uses the client vm, make sure to run java with the server vm for best performance by adding -server to the command line In fact, when i run java -version i get: ...
0
votes
1answer
60 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 ...
1
vote
1answer
72 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 ...
-2
votes
1answer
115 views

OpenJDK patched with font fixes mess up google chrome fonts

I've installed the patched OpenJDK in order to get proper font rendering in WebStorm 8. It works fine but i realized chrome has some font rendering problems since then. I only see this in chrome so ...
5
votes
3answers
4k views

Replace openjdk with oracle-jdk on Ubuntu

I have an ubuntu system and I want to replace my openjdk with oracle-jdk. However if I remove my open-jdk and then install oracle-jdk, when I try to install some packages they want to install ...
0
votes
0answers
68 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 ...
1
vote
1answer
670 views

E:Some index files failed to download. They have been ignored, or old ones used instead [closed]

I'm trying to install OpenJDK Java 7 Runtime on my Ubuntu 12.10 machine, but this happens every time: , W:Failed to fetch ...
1
vote
0answers
121 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 ...
0
votes
0answers
16 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
2answers
419 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 ...
1
vote
1answer
127 views

Installing oracle java versions

I went to the website to download (Java Platform (JDK) 8u20 ), http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html to download ORACLE java for my machine. I was ...
2
votes
2answers
52 views

What exactly should I set as JAVA_HOME?

I am trying to make Tomcat 7 working with Eclipse, and I am not sure if my JAVA_HOME is correct. ~$ echo $JAVA_HOME /usr/lib/jvm/default-java And there is no such catalog! I only have: ~$ ls ...
0
votes
0answers
38 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
2answers
3k 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
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
2answers
5k 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 ...
2
votes
0answers
243 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 ...
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
2answers
321 views

Changing the Java Runtime in NetBeans 8 on Ubuntu 14.04

(Not sure if this is the right site for this question - if not please migrate.) I am using Netbeans 8 for C++ on Ubuntu 14.04. Ubuntu comes with the Open JDK Runtime, which is what Netbeans is ...
0
votes
1answer
651 views

How do I use apt to install 32-bit OpenJDK-7-JRE on Azure AMD64 Ubuntu Server 14.04 LTS (Trusty)?

Ubuntu Server 14.04 LTS for Azure does not come with Java pre-installed. The server architecture is AMD64. I know that you cannot install both the x64 and x86 JREs side-by-side, and I only need the ...
0
votes
0answers
1k 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 ...
1
vote
0answers
125 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 ...
0
votes
0answers
186 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?
25
votes
8answers
38k views

How to install Minecraft (Client)

How to correctly install Minecraft, including setting any needed packages or apps to install it and to troubleshoot the most common problems that Ubuntu users face when trying to user Minecraft. I am ...