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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Where does keytool command logs?

I want to know in which file keytool command logs all the information. i.e when i execute below command :- keytool -import -file ca-certificate.cer -alias sample -keystore /root/keystore.jks I ...
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191 views

If I set java bin PATH Dockerfile Jar Command runs but tomcat doesn't

I'm creating a Docker file that FROM's the official TOMCAT 8 docker file and also seeks to use the jar command to extract content from a WAR file so I install openjdk-7-jdk. If I don't set the PATH ...
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2k views

Why is Android studio complaining about OpenJDK?

I have latest version of Manjaro 64 bit, latest version of Oracle's JDk and Latest version of Android studio. Everything is up to date on my system. Android studio is complaining about OpenJDK ...
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98 views

How to switch java environment for specific process?

I use openjdk in my work, but sometimes I need oracle's jre or even specific version of oracle's jre. As I know, I should update JAVA_HOME value and /usr/bin/java or /etc/alternatives/java link ...
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113 views

What makes a program Linux compatible/incompatible?

I understand that Linux does not support .exe's, but is adding Linux support as simple as providing a .jar version? This summer I'm going to try to really start programming and contributing to... well ...
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Why does gstreamer-ffmpeg change the fonts for java applications?

I recently installed gstreamer-ffmpeg-0.10.i686 on RHEL 7. As a result of this text in my java program has become slightly larger (maybe 2 or 3 font sizes), which is enough to mess with some of the UI ...
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Java does not run with error “No such file or directory”, despite it exists and is x86_64

The file exists but bash complains it doesn't when asked to execute it. $ ./Libs/openjdk-1.8.0_60-eap/bin/java bash: ./Libs/openjdk-1.8.0_60-eap/bin/java: No such file or directory $ ls -l ./Libs/...
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Installing Java JDK in busybox in an LXC container - java/lang/NoClassDefFoundError: java/lang/Object

In a web application I'm developing, users will be able to upload java code and I will need to compile and run that. For security reasons, I'd like to that inside an LXC container, and for footprint ...
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2k views

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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4k views

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. /usr/lib/jvm/java-1.7.0-openjdk-amd64/bin/...
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439 views

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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3k views

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 update-...
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2k views

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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442 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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609 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 ...
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71 views

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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332 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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717 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" java.lang....
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378 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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220 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 ./gvSIG-desktop-2.0.0-2066-final-lin-x86-standard-withjre....
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2k views

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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4k views

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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228 views

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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536 views

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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452 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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Minecraft acting differently when started from terminal compared to started by cron job at start-up

So I use a CentOS Linux 7.2.1511 server, where I host a couple of things, amongst them a Minecraft server. Since from time to time server is rebooted I scheduled a cron job to run minecraft server on ...
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Socket timeout from an upstream DNS server nxfilter [closed]

We are using ubuntu 14.04 server and installed nxfilter latest version. After the run ./startup.sh script file, getting below error after the 2-3 minute and If i stop and start the again script then ...
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70 views

Running Java GUI on Raspi without a connected display

I have a Java GUI app that runs fine on my windows PC and on a Raspi running Raspian when the Raspi has a monitor connected. I want to run the java app on the Raspi without a monitor attached. I'm ...
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Not Able to run simple Java Swing Program on Raspbian on Raspberry Pi 2 Headless connected using tight VNC

I am using a Raspberry Pi 2 model with Debian as the OS. I tried a simple java swing program that opens a JFrame on it, and it worked fine. Later, I wanted to use my Pi headlessly i.e. without ...
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76 views

How can I run my jar file in the background [closed]

I have developed a quick HttpHandler java application (jar file) and I now need it to run. Basically my jar act as a web server and I need it to be running while my linux machine is on. How can I ...
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110 views

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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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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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 java-1.8.0-...
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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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143 views

Sudden shutdown happens only when I have PhpStorm opened

I've had this reoccurring 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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Any way to force all java applications to use a particular java setting?

I need to add -Dsun.java2d.opengl=true to my java applications, otherwise they freeze up. Is there any way to force this system wide, so I don't have to modify the configuration file/script of each ...
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171 views

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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145 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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312 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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219 views

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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321 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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2k views

Increasing `ulimit -u` settings temporarily in OSX Yosemite

I'm trying to temporarily (without restarting the machine, just for test that starts a JVM) increase the number of processes to 2048 in OSX Yosemite but I'm unable to do so. First, I tried calling ...