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

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0
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1answer
6 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). $ ...
-1
votes
1answer
20 views

what are these outputs in terminal while installing/upgrading jdk

I've been installing jdk i have more than single problem 1.in 1st line when i try to set alternative of java it said java is already managed what does this mean 2.why i have to type java1, javac1. ...
0
votes
1answer
15 views

OpenJDK not running .jar files

I've downloaded the .jar file for Minecraft, and I installed OpenJDK 6 from the software center, and I tried with 7 as well, but it keeps throwing the message "The file ...
0
votes
0answers
10 views

Install openjdk-7-jre without prompt

During the install I have to hit [ENTER] in order for the install to proceed on the command: apt-get install openjdk-7-jre Is there a way to avoid this prompt?
1
vote
0answers
30 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 ...
0
votes
1answer
18 views

How to run two java applications running in different openjdk( say 7 and 8) at the same time in Ubuntu?

So the application DHIS2 runs only in Java-version-8, while many applications are still not compatible with newer Java Version. In such condition how can I run two different applications at same time? ...
2
votes
3answers
37 views

$JAVA_HOME resets after every terminal login

I just installed openjdk-8-jdk. I already had openjdk-7-jdk installed. When I ran echo $JAVA_HOME, it printed /usr/lib/jvm/java-7-openjdk-amd64. So I tried changing the $JAVA_HOME variable but it ...
0
votes
0answers
25 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 ...
120
votes
13answers
231k views

How do I install Java?

How do I install Java, including in my browser, so websites with Java work?
0
votes
1answer
19 views

How to run a jnlp app on 15.10

I have trouble running a java app starting with java WebStart. I do have icedtea-netx installed (1.5.3-0ubuntu0.15.10.1), but when I try to run the app, I get the following error: +(CONNECTED ...
103
votes
7answers
226k views

How to install OpenJDK 8 on 14.04 LTS?

As of 2016-01-11 OpenJDK 8 is still not available in an official backport for 14.04. It is, however, available in 14.10 and forwards. IMPORTANT: If you need this backported to 14.04, vote for this ...
1
vote
3answers
4k views

Missing tools.jar (Android Studio)

The command $ ~/android-studio/bin/studio.sh says 'tools.jar' seems to be not in Android Studio classpath. Please ensure JAVA_HOME points to JDK rather than JRE. I have searched for the solution ...
2
votes
1answer
3k 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
0answers
23 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
16 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 ...
1
vote
3answers
96 views

Oracle jdk in Ubuntu

I removed openjdk-7 completely using apt-get purge and installed oracle jdk(8u45).I have the oracle jdk in path and it is working well .The Problem is that, if I try to install any software(from ...
4
votes
2answers
5k views

OpenJDK vs. Oracle JDK for Android Studio

When I run Android Studio with OpenJDK installed I get a warning recommending the use of Oracle JDK. Is Oracle JDK actually better or is it fine to just stick with OpenJDK? Installing Oracle JDK seems ...
0
votes
0answers
10 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 ...
4
votes
0answers
127 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 ...
0
votes
1answer
60 views

openjdk 7 java freeze launch

NOTE: Found a workaround, I just want to know where the problem is. Hello everyone, I am attempting to run a java *.jar file that runs on my debian setup but cannot get to run on a fresh install of ...
2
votes
1answer
80 views

Error while installing DBeaver On Ubuntu 14.04

I am trying to install Dbeaver 3.5.6 on Ubuntu 14.04, but it shows some Java run-time missing error even though I've Java7 installed on my system. Here's how I tried to install ...
0
votes
1answer
37 views

How to set Java 7 as default?

For android 4.4.4 development, I needed Java 6. But eventually I moved over to Android 5.0 development which needed Java 7. When I tried using sudo apt-get install openjdk-7-jre and sudo apt-get ...
1
vote
1answer
54 views

How to downgrade Java version 1.6.0_36 to 1.6

I am trying to compile the Android source code version 4.2 in my Ubuntu 14.04. The compilation step is unsuccessful throwing following in terminal. Your version is: java version "1.6.0_36". The ...
1
vote
0answers
70 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 ...
0
votes
0answers
34 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 ...
6
votes
2answers
7k views

IcedTea plugin for OpenJDK 8

I updated from OpenJDK 7 to 8. I uninstalled 7, which uninstalled the IcedTea plugin as well. I tried to reinstall IcedTea with sudo apt-get install icedtea-7-plugin But it doesn't work. When I ...
0
votes
0answers
23 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
1answer
46 views

Can't install Netbeans/JDK 7 on Ubuntu 14.10

I am having trouble trying to install Netbeans/JDK 7 on Ubuntu. When i try to install Netbeans, it asks for JDK 7, but i was unable to install it via apt-get. I've tried this command already: sudo ...
0
votes
0answers
37 views

unable to install jdk 7 [duplicate]

I am unable to update package index in Ubuntu. I tried the command sudo apt-get update I am getting following output snippet:
2
votes
2answers
183 views

Is the openjdk-r ppa trustworty?

I've seen a ton of blogs saying Java 8 is now available to Ubuntu 12.04 & 14.04 through the ppa openjdk-r. My question is how trustworthy is this ppa? Is it run by people from openjdk or ubuntu or ...
0
votes
0answers
15 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 ...
2
votes
2answers
456 views

Apparmor problem: Icedtea plugin freezes firefox (35.0.1)

EDIT5: finally it's probably is an Apparmor problem. /usr/lib/firefox/firefox{,*[^s][^h]} is indeed in complain mode, but /usr/lib/firefox/firefox{,*[^s][^h]}//browser_java ...
1
vote
3answers
2k 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 ...
3
votes
1answer
2k views

NetBeans not working after update

I have been usigng NetBeans 2 years now and have encountered an issue. After a normal apt-get upgrade NetBeans stopped working altogether. After this I reinstall the JRE and JDK to no avail. However, ...
0
votes
0answers
89 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 ...
1
vote
1answer
481 views

Running AndroidStudio on Ubuntu 15.10 crash

Right now I am facing the issue that I cannot develop in AndroidStudio using Ubuntu 15.10, because both openjdk-7 and openjdk-8 cause problems. openjdk-7 issue Running AndroidStudio using env ...
0
votes
2answers
5k views

OpenJDK-7-JRE throws “broken packages” error (14.04 LTS)

I have an application that requires the Java JRE. I decided to go ahead and install the JRE from the repositories. Normally, the only issue I would have with this is it taking forever and a day to ...
21
votes
4answers
85k 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
4answers
6k views

how to install openjdk

When I try sudo apt-get install openjdk-7-jdk I got a message telling me that the package could not be found in database. I guess I'm missing repositories. here's the content of sources.list ...
0
votes
1answer
87 views

OpenJDK Java 8 - When will it be made available in Trusty 14.04.x

It appears that OpenJDK Java 8 has been out for a while now. However, it is not available in the "Ubuntu 14.04.x" (and derivatives) via the repositories. When, if ever, while Java 8 become available. ...
3
votes
1answer
184 views

libjai-imageio-core-java in Ubuntu 14.04

It seems that libjai-imageio-core-java is missing on 14.04 (it is available on Ubuntu 12.04): Is there a replacement for this file? Or, how do I build from the source code?
0
votes
1answer
510 views

libnpjp2.so - java plugin missing in openjdk-8-jdk:i386

I am using ubuntu 14.10 and i installed jdk8 via apt-get install openjdk-8-jdk:i386. Using update-alternatives, I have made java 8 as the default one. Now, when i checked java on firefox using this ...
1
vote
2answers
8k views

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, ...
0
votes
1answer
220 views

Install openjdk1.7 u79 package that was downloaded by terminal

Hi guys I download package jdk1.7.0_79and I wanted install the package using the terminal. I got this user guide and I did it step by step. sudo mkdir -p / usr/local/ java cd/home/ your_user_name ...
6
votes
4answers
8k views

Minecraft with OpenJDK 7, I get “the trustAnchors parameter must be non-empty”

Im using Ubuntu 15.04 and OpenJDK 7, trying to run Minecraft. This is what I get. EDIT: Minecraft is working now when I use sudo java -jar Minecraft.jar but doesn't work without super user, how would ...
0
votes
0answers
40 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 ...
1
vote
1answer
2k views

Minecraft doesn't connect to Mojang servers/the internet (15.04) [duplicate]

I've been trying to run Minecraft on Ubuntu 15.04 for a while. Whenever I try running, it won't download the launcher pack and it gives me this message: Bootstrap (v5) Current time is Jun 19, 2015 ...
0
votes
1answer
204 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 ...
3
votes
2answers
6k views

Problem running jar from gui in 15.04

I updated ubunut to 15.04 today. Now when I try starting a jar file from the gui it only opens the archive manager. Checking the open with tab in Properties I can't find Openjdk. I got both Openjdk ...
0
votes
1answer
79 views

Errors were encountered while processing: libxau-dev:amd64

I have removed Java version 1.8 and now want to install version 1.7. All the time I am getting error(1) with libxau-dev file so I am trying to install it and getting message below: my@server:~$ sudo ...