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.

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Java Client Connection Refused by Linux Server

I have a Java server and client, which is a simple server that prints a message when the client communicates with it. It works perfectly fine when the client and server are on the same machine. When I ...
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How to restart my java program automatically if it gets killed?

I am running my runnable jar in linux machine (machineA) as shown below. In the runnable Jar, I have a java program which sends email to me every 15 mniutes. ...
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Java appletviewer on arm ubuntu

I have an Ubuntu on arm CPU, where I would like to run a java applet standalone (i.e. not in the browser) I have the iced tea plugin installed and it works in Firefox. When I type appletviewer ...
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How to get Java working in chromium or firefox

I updated Java (version 1.8.0_25) and now I can't seem to get it working in chromium or FireFox. The java plugins for Firefox and for chromium are not listed anymore. Changing back ( via ...
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Interactive Shell Session from Java

I want to run a series of commands from Java. I came across few forums that explain how to execute multiple commands using getRuntime().exec(command) and defining command as String[]. But I want to ...
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408 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 ...
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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 ...
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Assistance applying poorly packaged patches?

I manage a handful of servers running the various roles of a Ahsay online backup solution. A few times a year the software is updated and I need to apply patches on my servers. Annoyingly the ...
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325 views

Java is constantly generating an error log in my home directory?

I have started to notice that whenever I use a Java-based application on Fedora 20, whether it's a game or Eclipse or something else, it will always generate an error log of some sort in home ...
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701 views

Java fails with “Could not find the main class”

I want to run a jar file in Linux (CentOS, 32-bit). But the following error occurs. What is the reason? [root@server ~]# java -jar keygen.jar Exception in thread "main" ...
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337 views

best programming language for I/O intensive tasks [closed]

I need to process "big data" (nearly 1TB which can be partitioned into smaller chunks). Consider several programming languages (Java, Python, C++, Perl) and other scripting options (Perl, awk, sed, ...
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213 views

Starting a .bin installer in graphical mode

I'm trying to install this software but after I run the usual commands: chmod +x gvSIG-desktop-2.0.0-2066-final-lin-x86-standard-withjre.bin ...
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Open screen process in terminal from script

I have a minecraft server running in screen, and right now, it is just a script that starts java like so: screen -dmS mc java -Xincgc -Xms1024M -jar craftbukkit-1.6.4-b2882.jar Basically this just ...
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Hugepages in linux - how to make sure that java process will start using hugepages

I'm running java server on Red Hat Enterprise Linux Server release 5.9. Recently I started to use HugePages as it has some advantages I would like to use. System was configured correctly (as many ...
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Alternatives not working well for Java installation on Centos 6.4

I am trying to installing on Centos java from Oracle. Following are my steps. yum install /usr/local/jdk-7u3-linux-x64.rpm alternatives --install /usr/bin/java java /usr/java/latest/jre/bin/java ...
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CentOS5, RHEL5, Java dependent Packages, Alternate JVM/JDK

Specifically regarding Java dependent packages, such as ant. Is it possible to install them via rpm, when using an alternate JVM/JDK? For example, If I install the Oracle JDK, can I use an ant ...
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How to log the output of a daemon application?

I have a Java program running as a daemon (thanks to YAJSW, a wrapper for java). The thing is that this java application writes several lines of console text, (simply imagine a Hello World App). If I ...
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443 views

Issues compiling Tanuki Java Service wrapper version 3.1.2 under armv5tel architecture

Basically I need this specific version of the Tanuki Java Service Wrapper to run a specific Java application. I downloaded the source from the Tanuki website and I'm trying to compile it from source. ...
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Font bug in Java apps on Arch Linux

What happens with fonts in my JAVA apps? SOAP UI screen as example (see toolbox)... I have no idea where is the problem. SYS: up-to-date ARCH LINUX. $ archlinux-java status Available Java ...
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How to run a jar together with faketime

I need run a certain jar file with a mock time for testing purposes. When I execute the jar in the usual way $ java -jar myjar.jar it runs perfectly. But when I try to run it together with ...
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TCP SYN,ACK Retransmissions

The following network trace was recorded on a Raspberry PI running Debian Linux. It seems the Raspberry is not seeing the data packet #36995 for some reason; it is just stupidly repeating his SYN,ACK ...
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CentOs 7 CronTab set JAVA_HOME

With the root user I configured the JAVA_HOME variable for crontab like this: [root@localhost ~]# vim /etc/crontab _______ SHELL=/bin/bash PATH=/sbin:/bin:/usr/sbin:/usr/bin:/opt/jdk1.8.0_71/bin ...
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308 views

Could not find libjava.so

So I'm trying to install and run the jdk/jre on linux to run app project compilation/signing/etc. actions from the command-line. To install, I used the following command: yum install ...
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Install Java 8 on ARM Nas (Debian Wheezy)

I need Java 8 on my NAS (Arm7, 32bits, Debian Wheezy) for fim software. uname -a Linux ReadyNAS 3.0.101.RN_ARM.3 #1 Mon Dec 15 23:39:16 PST 2014 armv7l GNU/Linux I tried the packages way : sh ...
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Java Process hangs with .exec and ssh

EDIT: I believe the issue is that the ssh connection is creating background connections that are still open (cf. http://superuser.com/a/617670). I would run ssh with the -f flag, but I need to be sure ...
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Sudden shutdown happens only when I have PhpStorm opened

I've had this reoccuring sudden shutdown issue happening recently, and it always happens when I have PhpStorm opened, I'm not sure if it's related, but it still seems random, meaning that sometimes I ...
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Java screen session starting

I am trying to launch a sh file wich starts a screen Session, but nothing happens. When I try to launch it manually it works fine. su minecraft -c "screen -S $1 -d -m sh start2.sh $2" and in the ...
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the case of the missing /usr/bin/jexec

I was upgrading a package when I came across the following - $ sudo aptitude install openjdk-9-jre=9~b87-1 openjdk-9-jre-headless=9~b87-1 -y The following packages will be upgraded: openjdk-9-jre ...
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Java related error met when installing COMSOL

I would like to install a software called COMSOL on Redhat (Red Hat Enterprise Linux Server release 6.4 (Santiago)) cluster. COMSOL is designed as a Windows software, and its installation requires X ...
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126 views

JMagick Unable to Locate Java Directories

I am new to Linux and am working on a VM. I am trying to configure my JMagick installation, however when I run ./configure I receive an error saying that it is 'Unable to locate Java directories:' ...
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281 views

Bash script (with a java command) does not exit (script 2)

I start a bash script (synchronously from java as glassfish user) which triggers another bash script: Script 1 executed from java: #!/bin/bash #Start script2 as myUser on myUser desktop echo ...
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Issues with Java in Linux

Firstly, I would like to apologize as I'm not quite sure whether this question is suitable to be on this site or Stackoverflow. I chose U&L eventually because the traffic here is much lower ...
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Is it possible to create aliases that affect services starting?

Currently I have a custom service that executes java in multiple places. I want to be able to add an option to any executions of java this service will spawn (I'm specifying the error log location, ...
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Help with java on Fedora

I have installed java on my fedora, because when I execute java -version I get: openjdk version "1.8.0_25" OpenJDK Runtime Environment (build 1.8.0_25-b18) OpenJDK 64-Bit Server VM (build 25.25-b02, ...
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after reboot server, service start without special chars

I write simple Java server. This service (java server) connect with mySQL database. I am connecting with this service by socket connection. Everything work well when i start my service by line ...
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Is it Possible to globally set the java hs_err log Location?

I know when executing a jar using the command line option -XX:ErrorFile=[location] allows you to change where the hs_err log files are placed. I am wondering: is there is a place I can globally ...
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282 views

Limit max thread use for multithreaded java app

I have downloaded a .jar file and am using java with it, and it seems multithreaded, which is great ... unless I don't want it to be multithreaded, or unless I want to use only N threads with it. Is ...
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Removing jre7 installs jre6

I am working under Mint 16 and I want to remove jre7 packages (openjdk-7-jre, openjdk-7-jre-lib and openjdk-7-jre-headless) since I don't need them anymore. Using synaptic or apt-get I can easily get ...
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139 views

Jar on Raspberry Pi not responding after a long time

Hello I made a java program with friend that is designed to run 24/7 as a personal assistant on a headless Raspberry Pi. It basically can be used as an alarm and to tell us the weather or news etc. So ...
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Java process gets killed frequently by OOM - Killer on upgraded hardware

I am running solr on an Ubuntu server along with 4 other java processes. Current index size is 30 GB. My solr process gets killed frequently in few hours. It clearly mentions that its an OOM killer. I ...
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java version not found in redhat

My OS is redhat linux. It's having the default java 1.4.2, but I need java 1.7.45, for that I am trying as follows: /usr/sbin/alternatives --install /usr/bin/java java /u01/java7/bin/java 5 ...
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429 views

Problem running “selinux sandbox” with java

I am trying to sandbox a java application using selinux sandbox. System details: Redhat 6 | x86_64 | no x server install | jdk7 from oracle tar.gz version | cgred and cgconfig are stop The cmd ...
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304 views

Installing java 1.6 when 1.7 already installed?

I have java 1.7 installed and I am trying to install java 1.6. I have updated java_home and path variable pointing to the new location, also ran these commands. sudo update-alternatives --set java ...
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535 views

java upgrade problem on centos 6.5

I want to upgrade my jdk on a centos server, after some simple searches i found some solutions. From this link, you can see that the instructions are simple: jdk 7 installation guide for centos ...
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How to make aptitude recognize Oracle Java as a valid java dependancy

I have Oracle Java 7 on my Debian. I want to install tomcat server using aptitude, but it keeps trying to install icedtea, and unnecessary java related packages, is it possible for aptitude to know ...
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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 ...
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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 ...
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org.eclipse.swt.SWTError: No more handles [gtk_init_check() failed] while running spoon.sh in ubuntu

When I am running spoon.sh file in Ubuntu I am getting the following error: [santosh@sbx data-integration]$ ./spoon.sh /home/decathlon/Pentaho-5.0.1/data-integration org.eclipse.swt.SWTError: No more ...
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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 : ...
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983 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 ...