Tagged Questions

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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0
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1answer
32 views

Eclipse window is not fully displayed

Some Eclipse windows is not fully displayed. Example: New project, New Class .... It is lost some of the items. Screenshot:
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0answers
47 views

Unable to share desktop while using Webex

While using WebEx, I am not able to share desktop. An error message shows that "Java is not enabled", but I've installed jdk7.4. I am using Ubuntu 13.10.
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0answers
111 views

libGDX project generator: Build Failed : Cannot find java system compiler

while generating a project libGDX throws thid error: FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':core:compileJava'. > Cannot find System Java Compiler. ...
0
votes
1answer
46 views

Java on easypeasy [duplicate]

I have successfully installed easypeasy in an Asus EeePC. I want to use the authoring programm Hot Potatoes, which is/uses a Java application (sorry for my poor technical vocabulary). It is installed ...
0
votes
0answers
21 views

Prevent APT from overwriting custom files

My server runs a Java application that requires I replace a few java library files with ones I downloaded on my own. This has to do with JCE security extensions and isn't really relevant to my ...
4
votes
2answers
305 views

How to start a Firefox from cron?

I need to run a Java applet from a Firefox. The problem is, I need to run this Firefox from a cron. If I run from the command line and its work fine, but when put the command in the cron it failed: ...
0
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0answers
18 views

Suddenly the tomcat got killed and i am seeing the fatal ERROR in the catalina.out logs

Here i am attaching the Fatal Error Can anyone please explain me what is the main problem for this
0
votes
0answers
46 views

Why doesn't lsof show localhost TCP connections in 14.04?

I have two servers running 12.04.4 and 14.04.1 respectively. Both have nginx (port 80) and a Java process (port 8080). As expected, the lsof output for the Java process (sudo lsof -nP -p $PID) on ...
0
votes
1answer
54 views

how to concatenate two strings in shell script in 3.13.0-34-generic kernel

I want to concatenate two strings for the shell file im getting error when i have created the shell file in following manner could you please suggest how to get it set export ...
0
votes
0answers
30 views

IcedTea webstart applications have a taskbar

I get a taskbar on IcedTea webstart applications like below. It is there whether there are any dialogs open or not (shown with a dialog just to help identify what it is) and it covers the bottom ...
0
votes
1answer
34 views

My IDE keeps crashing instantly: How do I diagnose?

I am using Aptana, Java-based IDE. Starting today, it is crashing suddenly every few minutes. This may have to do with the fact that I recently upgraded to Xubuntu 14.04. There is no error message. ...
0
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0answers
34 views

“hadoop version” getting error

I'm trying to install hadoop 2.4 & jdk8 on ubuntu14.04. I'm following the links: http://codesfusion.blogspot.com/2013/10/setup-hadoop-2x-220-on-ubuntu.html I've followed carefully above the ...
0
votes
0answers
111 views

Setting up OpenGL Development using LWJGL

I recently switched from Windows 7 to Ubuntu 14.04 LTS, while running a project of mine through NetBeans I encountered: org.lwjgl.LWJGLException: X Error - disp: 0x7f3c601e80c0 serial: 93 error: ...
0
votes
0answers
21 views

Searching for Java Path

I'm trying to install predictionIO using Terminal. At a point of the install process, it wants to download Hadoop and for this, it asks for the java path. I'm trying to find this path and until now, I ...
-1
votes
1answer
26 views

Error Line 1 unmet dependencies!

I got on today and after being on for 30 min it crashed and said there was a internal error. After restarting i had a red negative sign in the top right hand side of my menu bar. It said to look in my ...
0
votes
1answer
28 views

Can't open java mind-mapping create from Freeplane

I've created mindmap in freeplane and then export it as "Java", that gave me a html file and a folder. When I open this html file in windows it works correctly in Google Chrome and Firefox. But ...
0
votes
0answers
28 views

WUBI admin permission in graphic environment and installing question

While I can more or less create directories and such in folders like usr and bin ("root directories" right) through terminal comfortably (I say more or less because I set the password through wubi and ...
0
votes
0answers
16 views

loading gcc created shared libraray in eclipse with four additional java files (swig)

In my architecture components used (swig 3.0,gcc 4,jdk 1.7, Eclipse Luna). 1.Converting C code to Java done using swig. 2.My c file name and interface file name are xyz.c , xyz.i and by running swig ...
-1
votes
2answers
64 views

Java_Home problem, i can't find java's path

I try to change environment but it didn't work. I think I wrote wrong the path for Java. I write this /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java. How can I find the true Java path ?
0
votes
1answer
52 views

How to use make without an install.txt

I am trying to install JRE 1.7_67 from the source tarball. It does not come with an INSTALL file. How do I compile the package and install it without one?
-1
votes
1answer
324 views

can't run minecraft with ubuntu or wine since update to 14.04

i have followed other available advice on minecraft, java, etc, but can't find anything that works. here is my story: for a couple years i have been successfully running a cracked windows version of ...
2
votes
0answers
203 views

Unable to start topcoder arena in Ubuntu 14.04

When I want to clear cache using javaws - viewer these error comes. I am trying to launch my topcoder arena. Picked up JAVA_TOOL_OPTIONS: -javaagent:/usr/share/java/jayatanaag.jar Exception in ...
0
votes
0answers
43 views

“java.lang.ExceptionInInitializerError” error during start up on 12.04

I am getting "java.lang.ExceptionInInitializerError" error during start up. How do I fix this? Hardware: Acer i.3 fourth generation.
0
votes
2answers
2k views

HowTo: Upgrade java on Ubuntu 14.04 LTS?

I recently installed Ubuntu 14.04 on my computer and now my Java Version is not updated. I have Java so I dont need to install - just update the current version. Can someone please tell me the ...
0
votes
1answer
141 views

Geany doesn't find javac

I'm attempting to compile a Java program using Geany. I get /bin/sh: 1: javac: not found in the Compiler window. The available help out there suggests to make sure you have OpenJDK installed, which ...
0
votes
2answers
37 views

problem with java installation

When I type following command ramesh@ramesh-H61M-S2P-B3:~$ sudo apt-get install openjdk-6-jdk getting error as, Reading package lists... Done Building dependency tree Reading state ...
0
votes
2answers
67 views

Getting error downloading java programmer

E: Failed to fetch ftp://ftp.iitb.ac.in/os/ubuntu/archives/pool/main/o/openjdk-7/icedtea-7-jre-jamvm_7u55-2.4.7-1ubuntu1_amd64.deb Unable to fetch file, server said 'Failed to open file. ' E: ...
0
votes
0answers
29 views

Eclipse Java IDE 4.4 does not have the org.eclipse.pde.ui.PluginImportWizard?

I have just installed eclipse Java IDE 4.4 on Ubuntu 12.04 LTS. In the welcome screen I clicked "Create a Hello World SWT application" under Java Development. Under import the SWT project I clicked ...
0
votes
0answers
14 views

JDK 8 installation from .tar.gz file [duplicate]

I have downloaded jdk-8u11-linux-x64.tar.gz from the oracle website, and I have done gunzip and tar -xf which extracted all the files into a jdk directory(/usr/local/src/jdk1.8.0_11). Now is that it ...
0
votes
0answers
107 views

Error While Accessing Custom Class in PHP-JAVA-BRIDGE on tomcat7 in ubuntu 12.04

HTTP Status 500 - type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception javax.servlet.ServletException: ...
0
votes
1answer
174 views

How may I install the right Java Virtual Machine? [duplicate]

I receive following error in terminal: No suitable Java Virtual Machine could be found on your system. The version of the JVM must be at least 1.5. Please define INSTALL4J_JAVA_HOME to point to a ...
1
vote
1answer
105 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
251 views

Changing the Java Runtime in NetBeans 8 on Ubuntu 14.04

(Not sure if this is the right site for this question - if not please migrate.) I am using Netbeans 8 for C++ on Ubuntu 14.04. Ubuntu comes with the Open JDK Runtime, which is what Netbeans is ...
1
vote
0answers
398 views

Installing Php-java-bridge in ubuntu 14.04 i need two servers apache and tomcat both

When I copied JavaBridgeTemplate621.war to /var/lib/tomcat7/webapps and started the tomcat7 server and trying to go to http://127.0.0.1:8080/JavaBridgeTemplate621/ I'm getting following errors. HTTP ...
0
votes
1answer
120 views

Run executable jar file

I'm using Ubuntu 14.04 LTS and build JavaApplication using NetBeans so in the dist directory has executable jar file but doesn't execute as program it's opening through gedit.why don't run executable ...
0
votes
0answers
87 views

Eclipse won't start

I've just installed the latest version of Ubuntu (14.04) and Eclipse from the Software-Center. When I try to launch it, I just see the small welcome screen "eclipse 3.8 (c) Copyright ... etc", but ...
0
votes
1answer
60 views

Maven only invokable from terminal while root

I'm following the directions laid out here: http://java.dzone.com/articles/installing-maven-304-ubuntu Everything is in the right place and the sym link is working correctly. However whenever I try ...
0
votes
0answers
1k views

Google Chrome 36 and Java 7 Update 65 not working

I believe this question has been asked before, but the "solution" given is a workaround that I think is just not what I'm looking for. Apparently Google Chrome 36 doesn't support NPAPI plugins anymore ...
0
votes
1answer
428 views

How do I use apt to install 32-bit OpenJDK-7-JRE on Azure AMD64 Ubuntu Server 14.04 LTS (Trusty)?

Ubuntu Server 14.04 LTS for Azure does not come with Java pre-installed. The server architecture is AMD64. I know that you cannot install both the x64 and x86 JREs side-by-side, and I only need the ...
0
votes
0answers
1k views

How do I install Eclipse Luna and JDK8 to work in Ubuntu Studio using XFCE?

I tried following guides online to install Eclipse, but I'm not sure if it was supposed to work for my distro. I'm also unsure if openJDK 8 is the same thing as JDK8 for linux and whether or not it's ...
1
vote
0answers
96 views

How to open jar file with doubleclick after upgarade to 14.04?

After upgrading to 14.04. I ran into problems with opening .jar files. Double clicking on Client.jar doesn't open it. I tried right clicking and selecting both , OpenJDK Java 7 runtime and OpenJDK ...
1
vote
1answer
629 views

Having problem with installing JDK 7 and 8

I wanted to install JDK 7 and 8 on my system and I followed bellow post: http://stackoverflow.com/questions/16263556/installing-java-7-on-ubuntu But now, when I enter the: sudo apt-get install ...
0
votes
0answers
163 views

Minecraft launcher screen stuck on “Starting Launcher”

I have openJDK7 running, it is able to execute, and I downloaded it from the site normally I don't know what is going on any help?
2
votes
1answer
23 views

How do I refresh the package list?

I am download a java package and in order to update I need to refresh the package list. How do I do that?
0
votes
0answers
9 views

Cannot download Minecraft [duplicate]

Alright, now before I start I'm not the most tech savvy person out there so I dont know alot of terms and how to do things. I mean I know what a command, terminal, and argument is and all that but I ...
0
votes
0answers
56 views

Not able to run oracle sql developer?

I stated the path directing to java 8 during first run of oracle sql developer.But it is not supporting it. So my question is how to change the JAVAhome path to java 6 in sqldeveloper.config??
0
votes
0answers
112 views

Eclipse WindowBuilder on Ubuntu not working

I cannot get WindowBuilder for Eclipse to work on Ubuntu no matter what. Can someone who has done this (gotten WindowBuilder to work with Eclipse on Ubuntu) please explain how you did it? Although, I ...
0
votes
0answers
18 views

Installation of sun/oracle jdk in ubuntu [duplicate]

How to install oracle jdk 1.6 version in ubuntu 12.04 through terminal kindly help me with the installation stpes ?
1
vote
1answer
55 views

How do I change my java version?

I want to install Oracle JDK on my Ubuntu 14.04. I tried using webupd8's method. The installer worked fine but the when I type java -version I get: java version "1.7.0_55" OpenJDK Runtime Environment ...
-1
votes
1answer
34 views

Can't understand the README file of an extracted tar.gz file

The readme file of a file says: RUNNING: 1. Extract the contents of this .tar.bz2 file. 2. Change to the 'azureus' directory where the files were extracted. 3. Start Azureus by running the script ...