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

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aptitude dependency resolution issue when trying to install build-deps for openjdk-6

I am running into some kind of rather serious issue with resolving the dependencies if I try to install the build-deps for openjdk-6, as specified in the directions for compiling custom OpenJDK ...
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2answers
34 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 ...
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298 views

Ubuntu 13.04 - Unable to manage groups gnome-system-tools does not install from Software Center

Here is error message when attempting to install gnome-system-tools The following packages have unmet dependencies: gnome-system-tools:i386: openjdk-7-jre: Depends: openjdk-7-jre-headless (= ...
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15 views

openjdk-7-jre's recommended packages

When installing this package, apt-get wants to pull in lots of old Gnome packages (at least libgnome2-0, libgnome2-bin, libgnome2-common, libgnomevfs2-0, libgnomevfs2-common, libidl-common, libidl0 ...
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2answers
111 views

12.04, 12.10 - how can i install Java 32-bit and Java 64-bit?

I have my project which requires to run with Java - 64-bit for the main application. And for some other libraries it requires Java - 32-bit version. On 64-bit Ubuntu 12.04 when i install java it ...
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36 views

I can't switch from OpenJDK's Java 7 to Oracle's via update-alternatives

x5ives@aperture:~$ sudo update-alternatives --config java [sudo] password for x5ives: There is only one alternative in link group java (providing /usr/bin/java): /usr/lib ...
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1answer
59 views

Really weird hidden dash bug involving OpenJDK and Minecraft [closed]

I'm pretty sure my problem is unique. I'm using OpenJDK 7 to play Minecraft, in order to avoid wrangling with Wine. Recently, this setup has started to give me problems. I am getting "System program ...
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0answers
54 views

Why isn't Java working well in Google Chrome, Chromium and Firefox but working A OK in Opera?

Whenever I try to load up the runescape java interface in google chrome, chromium and firefox I find myself at the following screen: Which remains the same indefinitely. I am using OpenJDK Java 6 ...
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1answer
62 views

Setting environment variables for OpenJDK on Ubuntu 11.10

I am new to Ubuntu and have programmed in C in the same but java seems to be a bitof a pain. This is what -java version looks like java version "1.6.0_27" OpenJDK Runtime Environment (IcedTea6 ...
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1answer
83 views

Why do I get Exception in thread “main” java.lang.UnsupportedClassVersionError?

I am trying to run a program on eclipse. I am getting the following error: Exception in thread "main" java.lang.UnsupportedClassVersionError: Perlinit : Unsupported major.minor version 51.0 at ...
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1answer
84 views

How to fix “some packages could not be installed … unmet dependencies” installing Java? [duplicate]

I have some problems downloading with the sudo apt-get command. I try to get Java runtime: Reading package lists... Done Building dependency tree Reading state information... Done Some ...
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0answers
44 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 ...
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1answer
108 views

“Failed to fetch” error when installing Eclipse!

I am trying to install Eclipse by using the Ubuntu Software center. I do have an Internet connection and I have actually downloaded other software successfully. However, when I try to install Eclipse, ...
1
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1answer
394 views

Setup and install IntelliJ with JDK

Is there any scripts for downloading and installing IntelliJ with JavaJDK or OpenJDK? I don't know how I did it before using Ubuntu 12.10 but I'm now on a fresh 13.04 install and I have been looking ...
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2answers
125 views

Setting JDK 7 as default

four@twenty:~$ file /etc/alternatives/java /etc/alternatives/javac /etc/alternatives/java:symbolic link to `/usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java' /etc/alternatives/javac:symbolic link to ...
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2answers
119 views

I cannot install java from the software center

I can't install openJDK from the software center, I get the error: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/o/openjdk-7/openjdk-7-jre-lib_7u15-2.3.7-0ubuntu1~12.10_all.deb 404 ...
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1answer
135 views

How to configure JDBC, Tomcat for Eclipse IDE on my Ubuntu 12.04

I got an eclipse IDE on my client's machine. He needs to configure JDBC, and Tomcat on this IDE to use for his Java projects. Kindly help. He got mysql installed right now.
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23 views

How to accelerate java VirMIDI port detection?

I install the snd-virmidi kernel module in order to have Virtual MIDI ports in java and connect MIDI software synthesizer to java land. But, java takes a long time to detect those Virtual MIDI ports ...
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2answers
102 views

How can I make a .jar file executable?

I'm trying to run a jar application under Ubuntu, so I installed OpenJDK Java 7 Runtime, but when I open this application I got this message : The file '/home/aimad/Programms/jMerise/JMerise.jar' ...
5
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1answer
100 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, ...
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1answer
133 views

Set OpenJDK as default application

I'm trying to create a launcher for Minecraft, but in order to make a proper working launcher I need to have OpenJDK Java 7 set as the default application for opening the .jar file. Here's the ...
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2answers
342 views

OpenJDK built in Ubuntu 12.10, but not working?

I recently installed Ubuntu 12.10, and I just now realized I haven't installed Java on it. When I was going to, I saw that I already have java installed. java -version gives me: OpenJDK Runtime ...
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1answer
319 views

OpenJDK not working in Ubuntu 12.10 on Firefox

This is a problem I've been facing for quite some time now : installing Java. I have installed the following packages using Synaptic icedtea-netx openjdk-7-jre A few others got installed along ...
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1answer
296 views

How do I set CLASSPATH variable for Tomcat in 12.10?

Previously, I have set the JAVA_HOME path using the terminal with the following command: export JAVA_HOME="/usr/lib/jvm/java-7-openjdk-i386" >> ~/.bashrc Now, I want to set the CLASSPATH ...
2
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1answer
661 views

Which Java package should I use: OpenJDK or Oracle JDK?

I'm new to Java development under Ubuntu. When I typed javac in the terminal, it prompted me to install OpenJDK and a bunch of other JDKs. I want to know if there is any difference between OpenJDK 7 ...
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327 views

apt-get install openjdk-6-jdk install error / loop

apt-get install openjdk-6-jdk does not complete. It gets stuck at downloading. Get:6 http://in.archive.ubuntu.com/ubuntu/ lucid-updates/main openjdk-6-jre-headless 6b24-1.11.5-0ubuntu1~10.04.2 ...
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1answer
455 views

Libreoffice does not detect Java on fresh install of 12.10: how to make it work?

I can't use some features of Libreoffice (some extensions, macros) because my Java runtime environment (openJdk-6) is not recognized in my system (see [screenshot] When launching LibreOffice from ...
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2answers
880 views

Installation problem on jdk1.7.0_11

I am trying to install my ubuntu using the downloaded jdk1.7.0_11 and jre1.7.0_11,and i traced the questions from here and followed tat steps even it is not installing the java. In the terminal , I am ...
6
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2answers
1k views

is OpenJDK Vulnerable to 0-Day Exploit?

I was curious to know if OpenJDK is also vulnerable to the Zero-Day Exploit that is currently afflicting Java 7 because of which experts are telling people to disable Java until a solution is found on ...
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35 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???
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1answer
179 views

how to install g++ and openJDK from .deb package [duplicate]

Possible Duplicate: How can I install software or packages without Internet (offline)? I have recently started using ubuntu 12.04 for my dell inspiron 5500 15r. I want to install g++ and ...
14
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3answers
5k views

How to correctly install and troubleshoot 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 ...
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2answers
63 views

Do I need any additional Java packages if I'm running the Oracle JRE?

I am running the Java 7 JRE from Oracle. I installed it through terminal and it works properly with my web browsers, and otherwise, as far as I can tell. However, I was browsing through my ...
0
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1answer
73 views

Openjdk 7 wont show up at all [closed]

I was playing minecraft earlier with openjdk 7, put my laptop in sleep mode, took a nap, and now jkd is gone. i've uninstalled it both software center and terminal. then reinstalled both. it's still ...
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2answers
849 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 ...
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0answers
93 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 ...
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2answers
155 views

How to read OpenJDK 7 documentation (or other -doc) packages?

I have installed openjdk-7-doc but I cannot find where to read the documentations of the APIs? E.g.: How to find/read "String class" API documentation I prefer GUI-based over command-line but I also ...
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0answers
15 views

Problems with Update Manager and public keys [duplicate]

Possible Duplicate: How do I fix the GPG error “NO_PUBKEY”? I am trying to use sudo apt-get update, but I get the following error message: W: GPG error: "http://dl.google.com" stable ...
0
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2answers
1k views

Can't get OpenJDK Java 7 Runtime to open 'minecraft.jar' file

I have 64bit Ubuntu 12.10 installed with an Intel® Core™ i5-3570K CPU. I use Chromium. I have installed OpenJDK 7 but whenever I right-click the .jar file and click "open with openjdk java 7 runtime" ...
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1answer
2k views

Can't find openjdk's jre? No Java plugin in Chrome web browser.

I have recently installed openjdk just to try out writing some java application $ dpkg -l | grep jdk ii openjdk-7-jdk 7u7-2.3.2a-0ubuntu0.12.04.1 OpenJDK ...
2
votes
2answers
661 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: ...
1
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0answers
852 views

How do I install Oracle Java on 12.04 such that it works in Google Chrome/Chromium?

I've looked at the other questions asked on this subject and I got OpenJDK and its plugin for web browsers but it isn't working for me. Please help me here, would be much appreciated if someone could ...
2
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0answers
228 views

how to enable in chrome icedtea7 java plugin instead of icedtea6?

My chrome browser in ubuntu 12.04 uses iced6 plugin. Test http://java.com/en/download/testjava.jsp shows java6, but via update-alternatives I switched java/javac to using openjdk-java7
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5answers
4k views

Eclipse has multiple issues after JRE-6 (OpenJDK) upgrade

I'm on 12.04 LTS, and trying to use Eclipse Indigo. This morning Ubuntu made me update the following packages: Preparing to replace icedtea-6-jre-cacao 6b24-1.11.3-1ubuntu0.12.04.1 (using ...
3
votes
1answer
1k views

Compiling IcedTea: JDK home directory could not be found

Google Chrome keeps telling me that I need to update icedtea, I tried installing them from terminal, didn't work so I'm installing icedtea and icedtea-web from source, when I do ./configure it tells ...
2
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2answers
618 views

How can I select which Java to use?

I have installed both OpenJDK 6 and 7. When I run "java somefile" from the command line, OpenJDK 6 is invoked. I do not want to change this default behavior. What command can I use to run my ...
3
votes
2answers
1k views

When running Minecraft with OpenJDK, my keyboard becomes unresponsive?

I recently downloaded Minecraft with the .jar format and had it running on my computer not so long ago. Now that I'm using my desktop instead of laptop temporarily, I want it to run. On my laptop it ...
0
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0answers
125 views

How do i install the latest version of IcedTea 2.3.1 on 12.04?

i've recently read that IcedTea 2.3.1 patched up the recent Java zero-day vulnerabilities and i was wondering how to install it in Ubuntu 12.04, and please keep it simple.
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1answer
6k views

Setting up JAVA_HOME and CLASSPATH correctly on 12.04

I am having some issues with Java (OpenJDK Java 7 Runtime) on Ubuntu 12.04, and just want to make sure I have my CLASSPATH and JAVA_HOME variables set correctly. ...
0
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1answer
2k views

set JAVA_HOME for openJDK 6 [closed]

duplicate of: http://serverfault.com/questions/311739/setting-up-apache-james-server?rq=1

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