Java is a general-purpose programming language and a computing platform called the Java Virtual Machine (JVM). Use this tag when you are dealing with a java program, installing java, or configuring a java installation.

learn more… | top users | synonyms

0
votes
1answer
237 views

Sending a tab key event using applet to a unix machine?

i have an applet , that interacts with a remote unix machine . Everything works fine . I'm following the ganymede-ssh code . below is the code excerpt . session = CLIUtil.createTerminal(); if ...
0
votes
1answer
2k views

Can't load IA 32-bit .so on a IA 32-bit platform

I'm trying to install an 32_bit_application on CentOS (64-bit), while running the setup.bin file it return the following error Invocation of this Java Application has caused an ...
1
vote
2answers
425 views

How to increase the memory used by Java in linux?

I have a program Vuze that is written in Java, which I use to download very large files, and I'm having a problem with it. I need to increase the amount of memory it uses. I've followed the directions ...
13
votes
1answer
1k views

How to fix Java applications mouse pointer offset in Awesome WM?

How to reproduce in Awesome WM v3.5.2 through 3.5.5 (so far): Install OpenJDK or Oracle Java 7. This bug has been observed with both. Start a new Awesome WM session with the default configuration. ...
0
votes
3answers
416 views

Lots of free memory, but Java won't start (SunOS 5.10)

vmstat gives: swap free 37489684 110178592 Still I have issues, while trying to run Java process with 10g heap: > java -Xmx10g -Xms10g -d64 HelloWorldApp Error occurred during ...
1
vote
1answer
652 views

OpenJDK update in RHEL 6

We need to apply the JDK updates to one of the RHEL 6 servers. How do I apply the patch if I have the RPM package available, which I have downloaded from the internet. Searched a lot on the internet ...
1
vote
0answers
140 views

Fluxbox: is there a problem with java modal dialogs and fluxbox?

I have got a java application that opens a modal dialog. The modal dialog is shown behind the main window and there is no way I can bring the modal dialog to front. If I switch to Cinnamon everything ...
0
votes
1answer
921 views

Trying to install 32-bit java plugin on Centos 6.5 64-bit mozilla firefox

Long story short, my employer's webstart VPN requires 32-bit java to launch. I managed to get this working on a 64-bit CentOS 5.6 vm, but I cannot remember what I did or it's not working on 6.5... ...
0
votes
1answer
424 views

Error initializing server: OC4J administrator account is not configured

I am getting the following error message when trying to bring up ./oc4j service (oc4j_extended_101350.zip). [oracle@sc-ifactory01p bin]$ ./oc4j -start Starting OC4J from ...
0
votes
1answer
341 views

Mandatory argument for script to run java program

My script is called: report_startDate It has the following line: $JRE_ROOT/bin/java -cp /home/me/report/config/:/home/me/report/jar/reporting-1.0-SNAPSHOT.jar com.me.project.report.Main $1 $1 ...
0
votes
2answers
590 views

Choose a terminal emulator from Java [duplicate]

I am writing a platform independent Java console tool and within which will have to execute some commands in separate independent terminal at runtime. However, I need to know which terminal should I ...
3
votes
1answer
496 views

Allow non-root unmodifiable sofware to bind to ports 80 & 443

The company I'm in uses the Java Secure Application Manager to "secure" non-internal connections their webmail and electronic collaboration software. Aside from using expired certificates, and ...
0
votes
1answer
791 views

mysql jdbc connection issues in RHEL 6

I have setup the mysql database in one of the RHEL 6 servers. I would like to connect to this server's database from any other machine using a java program. How should I do it?
0
votes
1answer
85 views

Launching a sudo gui from desktop

Environment: CentOS 5.10 on 32 Bit. test.sh: #!/bin/bash cd /dump sudo /opt/java/jre1.7.0_60/bin/java -jar mytest.jar mytest.jar will pop a GUI app in the desktop, username is in sudoers with ...
3
votes
3answers
7k views

Messed up bash.bashrc file, commands not working anymore

Trying installing Java, I tried to add it to the executable path with the line: export PATH=/usr/lib/jvm/jdk1.7.0_60/bin:$PATH in the system-wide /etc/bash.bashrc file. For some reason this ...
7
votes
1answer
1k views

Poorly performing java application vs poorly performing server

This is a very generic question, but it has been coming up more and more often for me. I would like to try and determine an appropriate course of action for this generic case, as I think it could ...
0
votes
1answer
1k views

Tomcat: no xmx/xms value set, where is the heap value being defined?

I have a Tomcat 7 install running with Java 1.7 on a Linux 2.6 server, and jinfo shows no xmx or xms values. ps output shows nothing set for xmx/xms on the command line for the java process. Tomcat ...
4
votes
3answers
1k views

Mathematica makes no sound under Ubuntu 11.04

After waiting for days for my license I now got the opportunity to install Wolfram Mathematica 8 at home. However, neither the Play nor the Speak functions are doing anything as it seems that ...
3
votes
1answer
192 views

locate java source code in jdk7

I have installed Jdk7 in Ubuntu 14.04 and it is successfully configured and I can use java libraries in code. The problem is that I am trying to locate java source code, but not able to find the jar ...
2
votes
1answer
1k views

Why uninstalling openjdk automatically triggers an installation of the alternatives on zypper openSUSE?

I installed openSUSE 13.1 and I want to install Oracle jdk. What I intended was to first uninstall open_jdk/ice tea stuff as I won't be needing them anyway but it seems I cannot uninstall them without ...
2
votes
1answer
298 views

Make sense of this strace output

Can anyone make sense of this strace output? [pid 25302] read(34, "}B\311\204\n\250\347$\220\266kRb\304a^^\2504\303k\235\227T\223\16\231\306\277\254\256\306", 32) = 32 It's from a Linux system ...
0
votes
1answer
1k views

sun.jdbc.odbc.JdbcOdbcDriver not found

I'm configuring a Business Intelligence tool Yellowfin BI on my Debian Linux server and I get this error: Error Message: java.lang.ClassNotFoundException: sun.jdbc.odbc.JdbcOdbcDriver I cannot ...
1
vote
2answers
546 views

get CPU usage of a VM (linux) using java

Is there an API for Java in getting the CPU usage of a VM in KVM? I want to know how I could get the CPU usage of a guest (from the host's perspective) using Java. Also, does anybody know where I ...
1
vote
0answers
23 views

Solaris JRE Mozilla

In an thin client setup where Solaris 10 is being used on client and server side. Java based web apps are opened in Mozilla web browser 1.7. JRE version 1.4.2.6 is installed for Mozilla. On a few ...
0
votes
0answers
432 views

Mail Delivery too slow with sendmail

We are using javamail to deliver mail for our applications. The mail function runs in a loop to deliver around 100 to 200 mails depending on the range we use. However, it taking more than an hour to ...
1
vote
1answer
669 views

Programmatically creating .desktop file to autostart application

Using a Java program, I added a .desktop file in /etc/xdg/autostart to run a script when a user logs in. The script didn't run at user login, and when I checked the start up applications dialog ...
3
votes
0answers
192 views

Flipping Control/Command in GNOME breaks Alt key in JVM

I want to switch Control and Command modifier keys in GNOME / Debian Jessie, because I use a Macintosh laptop. I have managed to get these changed via the TweakTool -> Typing panel, like this: Ctrl ...
4
votes
2answers
1k views

Java doesn't show menu text

I startet netbeans/intelliJ/squirrelSQL after I didn't use it for a few days/weeks and now the menu doesn't show text. There are just the underlineds. My system: ArchLinux (everything up to date, ...
1
vote
1answer
417 views

Why All the text is invisible in Intellij? [duplicate]

I have installed manjaro and intellij. For a couple of month now I had no problems at all and I was fine with that. Since yesterday I experience a strange bug. The whole text is gone. What I tried ...
5
votes
2answers
2k views

How can I expose JAVA_HOME to applications running under X and/or Gnome?

I'm trying to run IntelliJ from Gnome3's Applications menu, but it complains the JAVA_HOME variable is not set. I have the Java installation under my home folder. I managed to export the variable in ...
2
votes
1answer
71 views

Update Oracle JDK

I know, there are several ways of installing ORACLE jdk7 on Debian. One way is to use the ppa from the web8updteam but i've read that installing software from ppa is not recommended on Debian. (is ...
0
votes
0answers
135 views

Use FindBugs in Eclipse from terminal on Ubuntu

Is there any way I could use Findbugs from terminal to get all the bugs in my Java code and print it out to a text file? I want to write a script that goes through 100 java files ( this is already ...
3
votes
4answers
23k views

Installing JDK 7 on debian

So I just rented a dedicated server running Debian, and I know nothing about Linux. Anyway, I want to install the JDK 7, first I connected through SSH and granted myself administrator rights by ...
2
votes
0answers
522 views

Java plugin not working with FireFox 24.3.0 on Red Hat Enterprise Linux 5.10

In the about:plugin tab, there is not Java plugin. I have created the symbolic link as suggested. The output of the 'ls -al' command is: lrwxrwxrwx 1 shehab shehab 58 Jun 4 11:21 libnpjp2.so -> ...
1
vote
2answers
513 views

Run jar on startup in all *nix based systems

I have a jar file which I need to run at startup in all distros of Linux. My previous question here, gave me an idea a rough idea on X-servers. Since I wasn't able to perform startup, I moved on to ...
2
votes
3answers
574 views

grep on a Java Method

Lets say I have a java class called DirectAction some of the methods in the class have the word "action" or "Action" What is the grep command to get the names of all the methods who have "Action" or ...
1
vote
2answers
1k views

Porting jvm into the kernel space?

Currently I am playing with the idea of a jvm running in the kernel space, as a (maybe linux) kernel module. I see a lot of advantage of the idea. Of course the biggest advantage of a such system ...
0
votes
1answer
1k views

davmail and JAVA INSTALLED MANUALLY

I'm trying to install davmail, I've already install JAVA manually (tar.gz file). After trying with the ppa:webupd8team repo and not having good results. Had to clean a lot of files packages and so ...
2
votes
2answers
7k views

Cannot install java after apt-get upgrade

When I execute java -version, I get this: bash: /usr/bin/java: No such file or directory I followed multiple online guides towards installing java. I followed all the steps but I still get that ...
4
votes
2answers
323 views

Lots of processes killed by SIGTRAP

Since yesterday, my Linux (Fedora 20) randomly kills processes for no reason at all (at least from my point of view), and the bugs reports say that all these processes are "killed by SIGTRAP". It ...
2
votes
1answer
347 views

A file exists but executing it doesn't work

I downloaded a Java tarball, extracted the archive and copied over scp to a remote machine. Using the ls command, the java executable exists: ubuntu@Ubuntu:~$ ls -la /home/ubuntu/jre1.7.0_55/bin/ ...
0
votes
1answer
1k views

How to run jgrasp on ubuntu?

I have problems with jgrasp. I get the following error message when I run it. ----jGRASP exec: javac -g R.java ----jGRASP wedge: could not execute javac ---- error number 2. ---- ---- ...
1
vote
0answers
333 views

Measuring context switches of a LWP gives incorrect results. Why?

I have a Java thread pinned at my cpu core. It is busy spinning and I see through top that it is running fine: %Cpu0 : 0.0 us, 0.0 sy, 0.0 ni,100.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st %Cpu1 : ...
1
vote
1answer
573 views

I`ve installed sqlite. Now where should i find it? How to make connection from java? [closed]

I have Linaro 12.07 (Ubuntu 3) I`ve made sudo apt-get install sqlite3 libsqlite3-dev libxml2-dev g++ ncurses-dev and Linaro says: libncurses5-dev is already the newest version. libxml2-dev is ...
8
votes
1answer
6k views

What is the difference between JAVA_HOME and update-alternatives?

I have been trying to figure out the best way to run OpenJDK Java Runtime as default Java for my Fedora box and use Oracle JDK 6 for Android development namely for running Android SDK Manager, Android ...
0
votes
2answers
244 views

UDP sending two strings in a datagram

I'm wondering if its possible to send two strings within one datagram in a UDP packet. Assume I had string 1 with text: unix and string 2 with text: linux. I don't want to merge the strings but keep ...
-1
votes
1answer
846 views

ADT bundle not installed in ubuntu 12.04

I downloaded ADT bundle from android developer site. Bundle name is :- adt-bundle-linux-x86_64-2014031.zip It contains eclipse, and sdk folder. In eclipse folder, there is one eclipse executable ...
3
votes
1answer
48 views

program executing for 2 days

I have a java program which implements the Hungarian algorithm. I made changes to the existing code in such a way that the input is read from file. I have a pretty huge input around 32,000 rows for ...
0
votes
0answers
133 views

Shell script time output over java enviroment

I am running a script from java program using sshxcute API. Script contains: #!/bin/sh data=`stat -c%y filename` echo $data Script running on bash gives output: 2014-03-08 13:26:29.335545828 -0800 ...
1
vote
1answer
1k views

Run Java in a chrooted jail

I'm on a CentOS 6.5 machine with Plesk Panel which I used to create a chrooted environment for a user who can access it via ssh. I'm not a big expert but somehow I managed to let him use some basic ...