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

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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 ...
22
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8answers
26k 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
92 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 ...
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3answers
3k 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
122 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
597 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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2answers
3k 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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2answers
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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: ...
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0answers
945 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 ...
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2answers
346 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
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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 ...
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1answer
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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 ...
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2answers
3k 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 ...
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3answers
2k 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 ...
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1answer
11k 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. ...
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1answer
2k views

Installing Oracle JDK, and repairing apt-get

I installed OpenJDK as soon as I installed the OS. Then I downloaded IntelliJ IDEA and tried running it. It displayed a warning that IDEA has known graphics issues with OpenJDK and that I should ...
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1answer
339 views

Why does openjdk automatically install when other version removed?

Every time I try to use openjdk java 7, nothing happens. I try 6, and still, no response. So, i tried removing it with Ubuntu Software Center. Every time I click on "Remove", it appears to remove ...
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1answer
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How come JAVA_HOME not automatically set for all users after installing openjdk-6 on Ubuntu 12.04?

On a freshly installed box, Java was not installed, so I installed openjdk-6 via apt-get install openjdk-6-jre openjdk-6-jdk. When I try to start my Hadoop service, it complains that JAVA_HOME is not ...
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1answer
158 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 ...
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0answers
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How to start Minecraft [duplicate]

Before starting I want to state that the following 2 links are already done: How can I install Minecraft? How do I install Java? I have the .minecraft folder in my user folder ...
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1answer
2k views

How can I update to jdk and jre 7?

I've been using jdk6 on ubuntu 12.04. I was trying to update my jdk to 7. I installed jdk7 and also removed jdk6. Now my javac version is 1.7.0_03. but my java version is still 1.6.0_24. So I got ...
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2answers
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Installing Spark on ubuntu

I am installing Spark IM Client for Ubuntu. The tar.gz doesn't appear to be functional at ALL, (considering the /bin directory is completely empty and lacks important things like unpack200) but I ...
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1answer
161 views

Is it safe have more than one version of java?

This question popped up when I tried to download a game for dolphin emu. The site isohunt recommended I use vuze and vuze requires jre. Silly me, as a windows noob, I immediately thought I d have to ...
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7answers
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Installing Chrome Java Plugin

I've been trying to install the Java plugin for Chrome for a couple hours now, and I figured it was time to ask people with more experience. I can't seem to get it working. My current Java version is ...
2
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1answer
827 views

Icedtea in Chrome won't load java applets

Icedtea in Chrome won't load java applets such as minecraft and runescape. It shows a gray screen instead. I've tried and failed to install the java plugin for chrome and it's left me wondering why ...
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4answers
70k views

How can I tell what version of Java I have installed?

I want to start toying around with java (eventually getting to the point where I can write basic little programs for android or web), but I've managed to have java messed up on my computer (from past ...
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2answers
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installation of openjdk 7

I am installing openjdk-7 on my ubuntu 10.04 server But I find it to be difficult. I am new to ubuntu. I have installed the python software properties as suggested by some advice I saw online and ...
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1answer
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Java Applet not working

I cant use any Java applets. I installed icedtea-7-plugin, and it is even activated under Add-Ons, but if I for example click: www.java.com/de/download/testjava.jsp The test-screen remains grey. I ...
5
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2answers
34k views

Completely uninstall and reinstall OpenJDK

I searched askubuntu and tried the suggestions but failed .I try this question:How to completely uninstall/reinstall Java 1.I run sudo apt-cache search openjdk get the following: openjdk-6-dbg - ...
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1answer
938 views

Is it necessary to have openjdk 6 installed in Ubuntu 12.04?

Is it necessary to have openjdk 6 installed in Ubuntu 12.04 or will openjdk 7 provide all the support I will need for Java functionality (generally speaking)?
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4answers
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Minecraft goes black on 12.04 [duplicate]

Upon upgrading to 12.04 I installed Minecraft, Openjdk 6 and 7. When I login everything is fine, but after that I get the "Updating Minecraft" screen for about 0-5 seconds, then the screen goes black. ...
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3answers
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How to use Eclipse with the JDKs provided by 12.04?

I updated to Ubuntu 12.04 and now Eclipse does not accept OpenJDK 6 in /usr/lib/jvm anymore. I tried to install openjdk 7 and it did create two folders in /usr/lib/jvm, but neither is accepted by the ...
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2answers
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Netbeans IDE did work after installation, but doesn't start after restart.

i installed Netbeans on Ubuntu 11.10 following these instructions: http://pasindudps.blogspot.com/2011/10/installing-netbeans-ide-in-ubuntu-1110.html. It worked perfectly fine (creating projects, ...
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2answers
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How to install the latest Java OpenJDK version?

My system is Ubuntu 10.04.4 (LTS) I know there is OpenJDK "1.6.0_24" The version in Ubuntu is "1.6.0_20" How do I install the latest version of the OpenJDK available?
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1answer
4k views

openjdk-7-jre on Ubuntu 10.10

As mentioned here, by running this commande you shoud have the JRE of J7. $ sudo apt-get install openjdk-7-jre But i cant always find the package in the officiel reposory of ubuntu even after ...
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2answers
3k views

How to make openJDK automatically update-alternatives?

Well, I've made a fresh Ubuntu 11.10 install and I installed openJDK 7. It updated alternatives just after installing, so it was all good. Then, I compiled a source and executed it and it didn't ...
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1answer
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Why do fonts look horrible in any java application?

All fonts in java applications look horrible. I have seen a few questions about this previously, but they are quite old now (11.04 was the most recent, but that didn't seem to be the same problem). ...
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0answers
852 views

How to fix unmet dependencies problem with OpenJDK [duplicate]

Possible Duplicate: How do I resolve unmet dependencies? I get this when I try to install openjdk 7 The following packages have unmet dependencies: openjdk-7-jre : Depends: ...
1
vote
1answer
910 views

Ugly OpenJDK fonts

Is there a way to make OpenJDK 7 fonts look exactly the same as Oracle JDK 7 fonts? I use Intellij IDEA and today tried it with OpenJDK, but fonts look ugly. I tried several tricks with ...
0
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1answer
4k views

Errors when trying to install the, default-jre-headless package from the synaptic package manager

I am trying to install the java re and java dk in Ubuntu 10.04 LTS. I tried using this link ubuntu help java. I used the first link for installing and clicked yes. I was warned that some of the ...
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2answers
2k views

openjdk6 not available

I run a server with Ubuntu 10.04 (Lucid Lynx) Minimal Server, on amd64 system. I 'd like to install the openjdk packages (jre and jdk), but when I try sudo apt-get install openjdk-6-jdk I get ...
0
votes
1answer
488 views

Getting Pogo Games to Work

I have Ubuntu 11.10, and have tried and googled till my eyes want to bleed. Javaws works on about 50% of apps on the machine in commercial sites. Yahoo sports will work for instance, but not the ...
11
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2answers
10k views

Changing JVM in Java

I only recently discovered the different JVM's on the wiki page and thought I'd start tinkering. Its been difficult to find documentation on how to configure Java on Ubuntu though. Lets say I wanted ...
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1answer
173 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 ...
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2answers
3k views

How do I remove SUN Java and use OpenJDK instead?

As a programmer I use java for learning to code in Netbeans. I installed Sun java 6 long time ago over openJDK that came with my ubuntu just cause it seemed more responsive... Now that oracle left ...
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1answer
6k views

Java location in Ubuntu using which Java [duplicate]

Possible Duplicate: How to install Java? How to replace OpenJDK 6 with OpenJDK 7? I've installed Java in Ubuntu and generally it seems to be ok, but now I'm trying to upgrade to OpenJDk 7 ...
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2answers
899 views

How to install Java and which version of it?

I'm on Ubuntu 11.10 and I wanna know which version (OpenJDK or Sun's one or whatever) is the best to develop applications and use it with Eclipse, and how to install it. Thank you.
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1answer
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Can't Install OpenJDK6

Well it started downloading packages but in between due to connection failure it stoped and now when I again run the same command I got this error: Err http//in.archive.ubuntu.com/ubuntu/ ...
3
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3answers
6k views

correct Installation and configuration of openJDK and R

I am relatively new to Ubuntu so I wont know a lot of commands that probably became standard to a lot of you guys. I am trying to set up R and with it the necessary java dependencies to install e.g. ...
3
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1answer
459 views

Poor Audio in Blackboard Collaborate (Elluminate Live) on Ubuntu 11.10

I already have Sun Java (not OpenJDK) installed, but I'm still having audio issues. OpenJDK didn't display the slides, which was fixed by Sun Java, but the audio was bad in both of them. Is there any ...