Java is a general-purpose programming language and a computing platform called the Java Virtual Machine (JVM).

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176 views

How do I execute in background / return early?

For reference, I'm using phpseclib to control a remote SSH server using the 'root' account. I have to start/stop a java process which is ran in the background. Stopping works fine with killall java ...
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117 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 ...
3
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209 views

Implement Java/JavaFX on ARM

I am working on ARM Linux. I have found this link that says that JavaFX could work on ARM. I am confused about Embedded Java SE and JavaFx ARM. Do I need to setup a JVM for those or not? I have ...
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349 views

VMO Changes After Adding New RAM To AIX?

We have a server at a client site running AIX 5.3, which we just up the RAM to 32GB, from initially 16GB (if I'm not mistaken). This server is our Application server running J2EE applications on top ...
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18 views

JVM low-memory tuning

What command-line options would provide the lowest memory-footprint JVM, in OpenJDK, or possibly other JVMs (Linux/Debian)? I'm willing to disable JIT, live with slow or choppy garbage collection, ...
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56 views

How can the RES memory reported for a Java process be higher than the VIRT memory?

I've been monitoring a Java process (Oracle Weblogic) using TOP and have observed that sometimes the following will happen: RES will increase from it's usual stable level of 2,097,152 KB up to ...
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405 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 -> ...
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463 views

can't open netbeans IDE in Fedora 17

my linux version is: Fedora 17 I installed Netbeans IDE 7.1.2 and it was working fine, but now, when I try to open it, nothing happens after double clicking on it. I think updating the kernel may be ...
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169 views

Any way for Unix to ignore lpoptions and let Java do it's job?

I'm using the javax.print API to print a Jasper Report on Debian Linux. For some reason the saved lpoptions (CUPS settings) always override settings chosen on the Java Print dialog. At this point the ...
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83 views

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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36 views

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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23 views

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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376 views

Tomcat unable to create file in dir owned by same group

I have a server running Tomcat, and I need Tomcat to create a file in a particular folder. Tomcat (technically a Java app) runs as the user 'tomcat', as evidenced by top: #top 1251 tomcat 20 0 ...
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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 ...
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180 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 : ...
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57 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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208 views

Aptitude installing jre

I am trying to install jre on my debian 7 kali box, but I keep getting these faulty errors. I tried installing it through aptitude and it fails at the end. The result is: dpkg: error processing ...
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204 views

JVM memory limit on Linux (Debian)

When running my java program, I get following error: Exception in thread "main" java.lang.OutOfMemoryError: Requested array size exceeds VM limit I am wondering how I can increase the limits on my ...
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255 views

X high CPU when using Java applications

Only recently, my Freemind program has become extremely sluggish and unresponsive (big lag) when moving my mind map around. I use Arch Linux with xfce4. Freemind is made with Java. If I move the mind ...
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182 views

Ant error after installing NetBeans 7.3 in Lubuntu

I have NetBeans 7.01 from Debian repository - all works. But I have a problem with NetBeans 7.3 from the official site (installed on the same machine) - I can't compile anything: ERROR - Ant is ...
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308 views

Installing jdk 1.4.2 on fedora 14

I am trying to install wsdgate, In the installation they have recommended to use jdk 1.4.2, I already have jdk 1.7 but I am not able to install JDK 1.4.2 on fedora 14. I got error like this could not ...
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198 views

Rogue Java process brings my computer to a halt

In reference to my earlier post: Is there a log of past threads that are now closed? I gave the process a kill -STOP signal and started examining the details. I can't seem to figure out why it is ...
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9 views

What font settings would Java Applications Use without Fontconfig?

I have a java application that looks fine without fontconfig installed, however, I need fontconfig as a dependency for a package, and when I install it my java app's fonts change drastically. My goal ...
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18 views

Java JRE 6 installation

I installed Java 6 (jre-6u45-linux-x64.bin) on a Ubuntu 12.04 machine following the procedure from this link: http://ubuntuforums.org/showthread.php?t=1904467. When I later installed Java 7 and ...
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15 views

Start a ssh when I click on a JSP button

I have a JSP page, which has a button. I want to start a ssh to the linux server whenever someone clicks that button. Will I be able to see the terminal inside the browser? How can I do this?
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12 views

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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34 views

File not read by Java until touched

We had a freak incident on Solaris. Our java program couldn't read a file until we touched the file. It was reading other files just fine, it just seemed to be completely blind to this one particular ...
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24 views

Syntastic, Vim & Android: get them play well together

I've got a problem configuring my development environment for android. I'm migrating away from Android Studio due to continious issues that I have no desire to solve anymore. I'm a long-time VIM ...
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16 views

when idle tomcat runs on 3.9% CPU

I would like to know if it is normal that tomcat7 runs on 3.9% CPU when idle? I saw all other processes are at 0%, only tomcat7 is always at least 3.9%. Thanks
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13 views

Java Focres X11 Window Server to Restart

I'm using OpenSUSE 13.2 with openjdk 1.8 and GNOME 3.14 desktop environemnt. Sometimes when I'm using a java GUI application (Swing) the XServer restarts. It just restarts. I don't know why, or what ...
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22 views

Where to store the SQL Server jdbc driver file for use by all users

I have downloaded the sqljdbc4.jar file which enables connecting to SQL Server via jdbc. I currently have this in a personal folder whilst I've been testing connectivity. I'm hoping to put this file ...
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42 views

What is the command for finding some counters in linux?

I am developing a Java swing application to find the Linux performance counter values. Till now I got command for System - vmstat Memory - cat/proc/meminfo Disk - iostat -dxm /dev/sda Now I want to ...
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50 views

Multicast is not received using Java on Linux

Setup is as follows: host windows machine, 2 VMs with a Host-Only Network adapter and a NAT adapter. Java program on one VM that sends a UDP packet to the following address ...
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101 views

web container options for war file in CentOS 7

I know that Tomcat and NginX are both able to host web applications that are defined by war files. But can httpd also host a war-file-based web application on a CentOS 7 server? If so, how would you ...
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279 views

deploying a war file to a remote centos 7 server

If tomcat is installed in a remote centos 7 dedicated web server, and a war file is placed in the webapps folder, how would you set things up so that http requests originating all over the internet ...
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11 views

How do I install MEKeyTool on my device running Debian 6?

I am having trouble installing MEKeyTool or finding documentation on how to install MEKeyTool. I am using a device running Debian 6. cvm -version produces the following output: Product version ...
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57 views

Spring roo not finding core java classes in Arch

Arch has changed some of how it sets up Java. I'm trying to get Spring Roo working, but it seems not to finding java provided classes on the class path. I'm running ./bin/roo.sh Resolved ROO_HOME: ...
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25 views

Why is my application being cut off?

I'm running a Java based application on Ubuntu 12.04 LTS, and for some reason it keeps getting cut off in the top left portion of the screen. I'm running this in VSphere, with VMWare Tools installed. ...
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35 views

Fluxbox, bbkeys and java

I have installed bbkeys so I could choose a window when ALT-TABed, but the java applications are not amoung the selectable. Is there anything special that needs to be done for a java app to be amoung ...
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211 views

sudo service errors out with JAVA_HOME not found

I've used visudoer to set the keep_env for JAVA_HOME: $ sudo printenv | grep -i JAVA_HOME JAVA_HOME=/opt/java $ ls $JAVA_HOME bin db jre LICENSE README.html src.zip ...
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72 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 ...
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146 views

Changing the Java Runtime in NetBean 8 on Ubuntu 14.04

(Not sure if this is the right site for this question - if not please migrate.) I am using Netbeans for C++ on Ubuntu 14.04. Ubuntu comes with the Open JDK Runtime, which is what Netbeans is ...
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212 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 ...
0
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0answers
71 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 ...
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130 views

Specific Jar file doesn't run on startup

I want to run a jar at startup, so I asked a question here. I was given a few suggestions, so I started from trying to create a script file and desktop file. I created a script file and desktop file ...
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52 views

How to configure Java Security Manager on JBOSS?

I’m trying to configure JBoss EAP 6 with java security manager. The official guide says you should edit the standalone.conf file, but I can’t find it. Can I circumvent this issue and define the java ...
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135 views

Setting up apache axis client on centos

I have below codes. import java.util.*; import java.io.*; import java.net.URLConnection; import java.net.MalformedURLException; import org.apache.axis.client.Call; import ...
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81 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 ...
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251 views

Jitsi crashes sound every time

No matter which version of the software I download and install from jitsi.org, running Jitsi causes the sound on my OpenSUSE 12.3 machine to be replaced by a low hissing noise. This persists even if I ...
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52 views

High Availability of Services

I want to monitor a couple of services in linux. In case they go down I want to restart them. I'm writing a crontab which will get the name of the services using jps command every 60 seconds, and if ...