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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How to get rid of this message about a failed install [on hold]

I installed Ubuntu 11 after its end of life. I then tried to install java from the repositories. However, the installation failed. Since then, every time I install some other package apt-get tries to ...
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1answer
22 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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0answers
9 views

How to generate log in SNORT? [on hold]

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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21 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 ...
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0answers
16 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 ...
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19 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 ...
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26 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. ...
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19 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 ...
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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 ...
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2answers
44 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 ...
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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 ...
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1answer
39 views

How to convert following CSV to Hashmap using JAVA [closed]

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 ...
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1answer
35 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 ...
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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 ...
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0answers
28 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, ...
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0answers
38 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 ...
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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
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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 ...
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0answers
31 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 ...
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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 ...
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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 ...
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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
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1answer
68 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 ...
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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 ...
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0answers
59 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 ...
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1answer
63 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 ...
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0answers
77 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 ...
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0answers
38 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.
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20 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 ...
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0answers
31 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 ...
0
votes
1answer
69 views

How to open .jar file from shell script without losing focus? [on hold]

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?
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34 views

icedTea java web start

When I run file .jnlp this massage appear net.sourceforge.jnlp.LaunchException: Fatal: Initialization Error: Could not initialize application. at ...
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1answer
65 views

Java Script for Firefox 35

Is there anything current or installing a java and java script for the new firefox? I recently upgraded. now sites I need are not working.. There is old information about iced tea and all kinds of ...
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0answers
30 views

How to Add “net.mindview.util.*” to my JAVA

I used ubuntu 14.10 for 2-3 months and I am still new to here. I am reading Thinking in Java, 4th edition.I thought many of you have read it. Here the details of my question. In the book,the author ...
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1answer
44 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/ ...
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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. ...
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0answers
53 views

Ubuntu 14.04.1 Server, openjdk broken packages

I'm trying setting up a Minecraft server using Ubuntu 14.04 Server x64. it's a fresh install, I have run apt-get dist-upgrade and update and -f install endlessly, now it reports always 0 packages ...
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1answer
249 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 ...
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1answer
23 views

Can I tell, from the browser, which Java version is installed, including whether OpenJDK, Oracle, etc

I know of java.com/verity, but it only tells me the the version number of Java, e.g. Your Java version: Version 8 Update 25 It does not tell me whether I have OpenJDK or Oracle installed. Is there ...
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1answer
39 views

Java Swing JFrame doesn't work in Ubuntu

I wrote the following program in Java: import javax.swing.*; import java.awt.*; public class Main { public static void main(String[] args) { JFrame frame = new JFrame("Test"); ...
0
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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 ...
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2answers
74 views

Setting java path in maven

When I do mvn --v, I get: Apache Maven 3.0.5 Maven home: /usr/share/maven Java version: 1.6.0_45, vendor: Sun Microsystems Inc. Java home: /usr/lib/jvm/java-6-oracle/jre Default locale: en_IN, ...
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0answers
72 views

RXTX Library Ubuntu 14.04 Soft link to see the serial port

I have installed the RXTX Java library rxtx-2.1-7-bins-r2 in Ubuntu 14.04 32 bit machine with JDK8. I would like to communicate with Arduino Micro connected to the serial port. But I am not able to ...
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1answer
46 views

No Jar files included in .deb file

I have created a debian source package for my java swing app that has .jar file and two lib/jar files. Three files (.dsc, .orig.tar.xz, debian.tar.gz) were generated as part of the debian source ...
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27 views

Cannot remove openjdk without having an older version installed, how can I do so?

I am running Ubuntu 14.04.1 64-bit with Oracle Java installed, hence I would like to uninstall openjdk, but when I try to uninstall it via the command line I get the following output: ~$ sudo apt-get ...
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47 views

IcedTea always ask for confirmation even when the security level is lowered, how to change this behaviour?

I am running Ubuntu 14.04.1 64-bit LTS with OpenJDK Java 7 Runtime, IcedTea Web Control Panel, IcedTea Java Web Start and Icedtea Java Plugin(browser plugin) installed. I am using Firefox 35.0.1 and ...
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1answer
47 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 ...
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1answer
104 views

Installing JDK 8 after removing OpenJDK 7

I just removed OpenJDK at Ubuntu Software Center, and downloaded JDK 8 at official Oracle site, and installed with alien. But when I type java -version at terminal, it keeps returning ...
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votes
1answer
93 views

Recent Java 8 update and now +PrintAssembly crashes on 14.10

Everything was fine, but when the recent Java update happend it blew away everything in the Java directory, including things that didn't belong to it. Now I'm trying to get Hotspot assembly printouts ...
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1answer
156 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 ...