Java is a programming language originally developed by Sun Microsystems. Questions here should be about the installation, configuration and troubleshooting a JVM (Java Virtual Machine) or a JRE (Java Runtime Environment). Programming questions (unless directly related to Ubuntu) should be asked ...

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1answer
141 views

Installation of SAP GUI 740 on Ubuntu 14.04

I need your help! I have the following version of JRE installed on my system: java version "1.7.0_75" OpenJDK Runtime Environment (IcedTea 2.5.4) (7u75-2.5.4-1~trusty1) OpenJDK 64-Bit Server VM ...
0
votes
1answer
16 views

How to compile .java files in terminal?

I have already installed JDK in my 12.04, but i don't know how to compile .java files in Terminal. I used javac FILENAME.java then java FILENAME in terminalbut this shows error like this javac: file ...
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votes
0answers
7 views

How to generate log in SNORT?

please explain how generate Google chrome log activity file in snort? and how generate alert msg any software install in snort?
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0answers
14 views

Enabling Java in Chrome on 32 bit 14.10

I am trying to run Runescape in Chrome (it has game.ws in its file address http://www.runescape.com/game.ws), and while I can run this game in Firefox I can't seem to run it in Chrome. To overcome ...
0
votes
0answers
13 views

Cannot able to connect to another host

After few self tests, i thought its a telnet-ing problem. So i am recreating a shorter version of this question I have two machines. cassandra is running on one machine. let assume its ip is ...
2
votes
2answers
6k views

Oracle Java Virtual Machine install?

I cant get it install and I need it running for a job application i need to put in online. jre-7u51-linux-i586.tar.gz that's the file and every time I try to install it wont complete, says cannot ...
3
votes
3answers
8k views

Java Oracle Installation /usr/bin/java: cannot execute binary file

Hi I've been trying for 1 day to get Oracle Java running on Ubuntu. I have a powermac g5 with Ubuntu 12.04 ppc64. uname -a : Linux LK37 3.2.0-53-powerpc64-smp #81-Ubuntu SMP Thu Aug 22 21:17:14 UTC ...
1
vote
2answers
43 views

ARM - Java 6 works, Java 7 doesn't [on hold]

I have a ARM Android phone, and want to use it to test Java projects on it, because it's the only "PC" that I can have close to me all the day. Right now, I installed Linux Deploy and then created a ...
40
votes
7answers
152k views

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 ...
0
votes
0answers
14 views

Error thrown while loading gnu.io.RXTXCommDriver

I am trying to run a java program which list all available ports using Eclipse IDE in Ubuntu 14.04. My program is as follows: import gnu.io.CommPortIdentifier; import java.util.Enumeration; public ...
0
votes
0answers
47 views

Runescape private server blackscreen on startup

I have been having this issue for a while now, and it appeared so suddenly! I run ubuntu 14 through a Dell 11 chromebook and had almost all rsps' working just fine, then I accidentally messed some ...
1
vote
2answers
647 views

Eclipse does not start on 14.04

I recently upgraded to Ubuntu 14.04 and have been trying to install and use Eclipse ever since. I tried using both open JDK as well as Oracle JDK installations(both Java 7 and Java8) and both Eclipse ...
0
votes
2answers
297 views

JDBC Connection Pool details on Glassfish

I can get some basic information from Glassfish v4 about the JDBC connection pool from the CLI with asadmin: thufir@dur:~$ thufir@dur:~$ glassfish-4.1/glassfish/bin/asadmin Use "exit" to exit and ...
0
votes
1answer
43 views

when a .war is deployed in Glassfish, what's the path to WEB-INF?

Where "is" WEB-INF/duke.gif? What's the path(?) to this image? thufir@doge:~$ thufir@doge:~$ jar -tf NetBeansProjects/WebApplication/dist/WebApplication.war META-INF/ META-INF/MANIFEST.MF WEB-INF/ ...
0
votes
0answers
22 views

Java error while launching RapidMiner on Ubuntu 14.04.1

I am trying to install RapidMiner Studio from my Ubuntu terminal. However I am stuck with the error below. I do have my Java 7 and set the JAVA_HOME=/usr/lib/jvm/java-7-openjdk-amd64. ...
0
votes
0answers
14 views

How do I uninstall 64 bit java jdk so I can install 32 bit?

I thought my computer is 64 bit so I downloaded the 64 bit JDK and tried to install it but it failed. Then I tried installing the 32 bit JDK but it refuses as some of the 64 bit package are still ...
0
votes
0answers
15 views

Cannot build with maven using docker on a ubuntu server 14.04 vm machine

I'm using Ubuntu Server 14.04 on a local virtual machine for compiling. I have issues with the docker maven plugin, when I want to compile my Java Application with mvn clean install resigning in a ...
0
votes
0answers
16 views

Java algorithm performance difference between Linux and Windows

We observe a very significant performance difference of an algorithm in java between Linux (ubuntu) and Windows. The difference is 3x-4x in favor of Windows. Test machine is i3770 quad core (8 logical ...
0
votes
1answer
38 views

How to convert following CSV to Hashmap using JAVA [on hold]

Suppose I have CSV file like this: Name Roll No. Address PhoneNo Jhon 909 CA 1 Jeff 101 CE 2 Jhon 121 US 3 Jhon 909 US 4 I want to generate ...
0
votes
1answer
150 views

how to install and configure Glassfish 4

How do I install Glassfish 4.x and run it on port 80? While it's easy enough to download Glassfish and unzip it, should it go in a particular directory? Which user should start and stop the server? ...
0
votes
1answer
45 views

Shift-Select in Matlab Editor lagging

I have very peculiar problem in Ubuntu 14.04 and 14.10 using Matlab (both R2014a and R2014b) I am not able to solve for almost a year (maybe even more). This problem persists on my second machine I ...
1
vote
1answer
29 views

Ubuntu 14.04 Server , launch jar in screen on boot/restart

Ive been reading everywhere on how to do this, and I understand how to do it, but for some reason I cannot get it to work correctly. I simply want to run a jar file on restart or boot, the jar file ...
0
votes
0answers
21 views

Jave heap space error appearing Linux ubuntu 12.04

I'm running my program and this error appears after some time java.lang.OutOfMemoryError: Java heap space at HadoopMyapp.HistogramPair.<init>(HistogramPair.java:25) at ...
0
votes
0answers
35 views

Problem with installing Java : in home directory (not root)

Quite new to Linux. Installed java by using JAVA_HOME and PATH in bash_profile of home directory. But the problem is when I echo the JAVA_HOME path: echo $JAVA_HOME which I have exported the value ...
18
votes
3answers
17k views

Eclipse (ADT) crash Failed to write core dump. Core dumps have been disabled

i found my problem here: how to fix “Failed to write core dump. Core dumps have been disabled” error while running java and here: Eclipse crashing on startup and here: Eclipse continue crash Nothing ...
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votes
0answers
27 views

I am told my browser needs Java runtimes [duplicate]

**** EDITED **** The suggested link for an answer does not work, I don't permission to do that. I am told my browser needs Java runtimes, the openJDK isn't suitable and I downloaded the file, ...
0
votes
0answers
19 views

java.lang.OutOfMemoryError: Java heap space

I'm using Hadoop in my application, but just before the program exits I get this error java.lang.OutOfMemoryError: Java heap space I already modified the mapred-site.xml and added this property to it ...
0
votes
1answer
17 views

Messed up javac

Im relatively new to Ubuntu and was playing around with a few notes I received from one of my lecturers. I had a file called "eg.java" which was just a small file with no relevant info that I was ...
0
votes
2answers
34 views

Beginner Programming Issue with Javac

I am reading through an introductory book for Java programming and I am facing an issue from the get-go. I am told to run in the terminal javac Example.java. From that command, javac compiler is ...
-1
votes
0answers
27 views

I am getting Could not clean server of obsolete files: null error

I was using eclipse and tomcat 7.0 fine for all web application till yesterday but unfortunately i lost my eclipse folder(which is i am running exe) and temp folder(which is workspace directory) so i ...
0
votes
0answers
16 views

Unable to run Junit 4's JUnitCore

I've downloaded the junit-4 and hamcrest jars, as specified on the Junit site: https://github.com/junit-team/junit/wiki/Getting-started However, I can't figure out why the junit-4 jar doesn't seem to ...
0
votes
1answer
243 views

Oracle Java plugin not recognized by Firefox 35.0.1

I have added symbolic links pointing to libnpjp2.so of jdk1.8.0_25 (in jdk1.8.0_25/jre/lib/i386/) to the following locations: /usr/lib/mozilla/plugins /usr/lib/firefox-extensions/plugins ...
24
votes
6answers
39k views

'tools.jar' is not in IDEA classpath

I am a new user of Linux, it has been recommended to me by my friend. He told me to install software called IntelliJ Idea IDE. Well I have been following the tutorial. But now when I try to open ...
0
votes
0answers
25 views

add-apt-repository command not found [duplicate]

root@modsmy:~# add-apt-repository ppa:webupd8team/java -bash: add-apt-repository: command not found I got this error when I type the following: add-apt-repository ppa:webupd8team/java
0
votes
1answer
64 views

Java installation and Android Studio AVD problem

Android Studio doesn't open as root terex@Terminator:/android-studio/bin$ sudo ./studio.sh ERROR: Cannot start Android Studio No JDK found. Please validate either STUDIO_JDK, JDK_HOME or JAVA_HOME ...
0
votes
0answers
7 views

unable to sign with digital certificate on portal

Please help to resolve mention issue we are using Ubuntu 10.04 and we have our internet portal that purpose we require digital certificate.we are using mozila 24.0. that certificate show in Mozilla ...
42
votes
1answer
84k views

How do I update Oracle Java 7 (JDK and JRE)

Recently, I've installed JDK 7 from the Oracle site, using these instructions. Now, I'm wondering what is the correct method to update it (or, better, to keep up-to-date automatically)? For instance, ...
0
votes
1answer
34 views

ubuntu java error

java --version returns java: error while loading shared libraries: libjli.so: cannot open shared object file: No such file or directory and while running eclipse it returns a dialogue box with ...
0
votes
0answers
37 views

Liteloader doesn't work

I am using a 64-bit java Open JDK 8 on Ubuntu 14.10. I tried to run Liteloader and it doesn't work. I used java -jar liteloader1.7.10.jar, made it executable, and it still doesn't work.
0
votes
0answers
51 views

Missing tools.jar (Android Studio)

'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 to this error, and as far as I can tell, I've done ...
1
vote
1answer
59 views

Minecraft and java troubles

I like to play Minecraft. But recently I can only be able to open Minecraft versions that is lower than 1.7.2. When I launch 1.7.2 the Minecraft didn't show that I have to upgrade the card. My OpenGL ...
0
votes
0answers
17 views

x2go with Unity: alt keys are not sent correctly to remote apps

I'm using x2go on ubuntu 14.04 to connect to another 14.04 machine that is running inteliJ I'm not able to use any alt keys combinations on inteliJ such as alt+1 or alt+f I configure my x2go session ...
0
votes
0answers
71 views

libjvm.so: cannot open shared object file: No such file or directory

Trying to install the rJava package on R, on my 14.10 ubuntu, using this code if (!require(rJava)) install.packages('rJava') got few errors related to java including jni problems, after ...
29
votes
12answers
96k views

How can I install Minecraft?

I have tried many tutorials but none of them are clear enough. I have also tried installing it using Wine but it won't update and Wine goes gray and stops working. Does anybody know an easy way to ...
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votes
2answers
656 views

Running .jar File using JDK on Ubuntu 14.04 [closed]

I install JDK on my Ubuntu 14.04 so I can use Netbeans and Android studio. I download a .jar file in the internet and I want to run it on my PC. My problem is, I cannot find java to run this file. I ...
0
votes
1answer
10 views

Missing log file

I wrote a .jar file that is supposed to be run once a day that interacts with Google App Engine. When I run it from the computer, it runs just fine and creates a logfile that details some statistics. ...
0
votes
0answers
26 views

How to check my GPU in NVIDIA site?

At http://www.geforce.com/drivers there is a button called Auto detect GPU. It should automatically show drivers for my GPU. It requires java but java doesn't seem to work in chromium. I installed it ...
0
votes
1answer
69 views

How to open .jar file from shell script without losing focus?

In my script I need to open .jar file and keep focus on terminal. I tried java -jar maps.jar &, but it didn't work. What should I do?
2
votes
2answers
31k 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
0answers
30 views

netx: Invalid jnlp file true

I am trying to run OpenProj 1.4, but receive the error message netx: Invalid jnlp file true I suppose this has something to do with IcedTea? I am running OpenJDK java 1.7.0_75, IcedTea 2.5.4 and ...