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

learn more… | top users | synonyms

1
vote
1answer
1k views

RPM: failed jre dependency, even though that JRE version is installed

I am trying to install a package, and it fails reporting a missing dependency: # rpm -ivh * error: Failed dependencies: jre >= 1.7.0 is needed by Tomcat-7.0.37-1.noarch At the same time, ...
1
vote
1answer
1k 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 ...
-1
votes
2answers
794 views

wheezy maven install

I have wheezy installed from a pen drive. Updated things and thought I had got maven and eclipse. But maven projects would not compile. I uninstalled all the maven programs I could find in Add/remove ...
2
votes
2answers
185 views

Change PATH in Debian 7.1.0 for JAVA

I would like to change the PATH of my Debian 7.1.0 system to link the java version I want. If I insert into the terminal: java -version I get: java version "1.6.0_27" OpenJDK Runtime Environment ...
3
votes
2answers
231 views

How to make apt recognize an installed tar package?

I've installed Oracle Java. I want to be able to remove OpenJDK, but when trying to do so apt wants to install another version of Java. How can I configure apt so that it knows I already have a ...
7
votes
1answer
3k views

What is the safe way to allow Java 7 to run on SELinux

Short version: What is the most secure way to allow Java 7 to run on (with?) SELinux? Long version: Sorry in advance if I use incorrect terminology. I'm really just a Java developer with a meager ...
2
votes
1answer
199 views

Autocomplete doesn't work for file parameters to jarsigner

I'm using Lubuntu 12.10. Assume I've got a file called test.apk in my current folder. 1.) In LXTerminal/bash if I type, adb install t<TAB> the terminal autocompletes it correctly to ...
2
votes
2answers
598 views

Problem downloading Java JDK with WGET on Ubuntu

I'm attempting to install the Java JDK through the command line using WGET on ubuntu (no desktop). Here is the picture I took. The file that was downloaded was not the tar ball of the JDK: How can I ...
1
vote
1answer
462 views

Java application locks up after playing sound

Our Java application plays short notification sounds periodically (in response to user actions). On some hardward, our application will lock up after the 3rd or 4th short sound. We have to pkill java ...
0
votes
0answers
268 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 ...
0
votes
1answer
215 views

Init script partially launches java app

I have a java application that I manage to execute by hand. The application normally opens several ports for local communications (7180 => 7183). Port 7182 serves as a web console and allows me to ...
4
votes
2answers
6k views

Find the process id of a java application in a bash script (to see if the target application is already running)

I know there are a million questions on getting the process ID, but this one seems to be unique. Google has not given me the answer, so I hope stackexhange will help rather than close this question. ...
0
votes
0answers
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 ...
0
votes
0answers
101 views

Prevent Java to escalate CPU usage on Slackware64?

I use Slackware64-current on my work laptop and though I love running Slackware, sometimes it hangs on me near to the point of starting considering falling back to Windows. I develop on Java and use ...
3
votes
1answer
3k views

Minimal Java installation for Linux with no GUI

I'm working on a CentOS 6.3 x86_64 minimal OS (installed using the netinstall ISO). This system is not expected to run anything beyond console apps/services and Tomcat7. When I attempt to install ...
2
votes
1answer
62 views

Can connect from RPi to laptop, but not other way around

I'm developing a server-client application (command-line based) in Java. I want to run it on my Raspberry Pi (RPi), but it turns out I can't login to my server-part from my laptop. The problem is that ...
1
vote
0answers
303 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 ...
2
votes
4answers
132 views

any feature on linux like Perfermance Counter on Windows servers?

I have a tomcat web application, when invoking an unstable remote API, I want to get realtime http request time at any time. On windows server, I can use Performance Counter, does centos provide ...
0
votes
1answer
424 views

Red5 can't find JAVA_HOME

I'm setting up a Red5 server on Cygwin I get this /usr/share/red5$ sh red5.sh Running on CYGWIN_NT-6.1-WOW64 Unable to locate Java. Please set JAVA_HOME environment variable. However, I can also ...
2
votes
2answers
27k views

How to set environment variable JAVA_HOME that will be saved on exit? [duplicate]

Possible Duplicate: How do I set a user environment variable? (permanently, not session) I use Suse. First was installed jdk7, so JAVA_HOME remains like: /usr/java/jdk1.7.0_05/ After I ...
0
votes
1answer
2k views

Java installation having issues on Centos java and javac showing different version

I have this package of java jdk-7u3-linux-x64.rpm. So I have been doing this normally yum install jdk-7u3-linux-x64.rpm. Then immediately I will do this alternatives --install /usr/bin/java java ...
2
votes
2answers
784 views

Search class names in jars

I'm using this command to search *.jar files for java classes, and I only get the name of the jars that contain those classes: grep -ral --include=*.jar SignonEJB . How can I also get the class ...
-1
votes
1answer
72 views

Novice Ubuntu 12.04 user needs help! [closed]

I'm new to Unix/Linux and someone suggested I try Ubuntu. I like it but I can't figure a couple of things out and don't really have time to google up ways to solve the problem. Answers from a quick ...
4
votes
3answers
2k views

Uniquely identifying java processes with same name

I have two java processes which run using the same file name, MyApp.jar (for example). /usr/java/latest/bin/java -jar MyApp.jar These jars exist in different places and use different ...
1
vote
3answers
345 views

Get Position of RAID Hard Drives

I was recently tasked with creating a hard drive management system on Linux. I needed to write a program that monitored when drives came online and offline and created/removed links to the drive ...
1
vote
0answers
193 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 ...
3
votes
1answer
2k views

Cannot kill a java process

I have a java process that cannot be killed. I have tried every method I know, or that I have found on the internet to no avail. I have tried: killall java kill -9 <pid> kill -11 <pid> ...
2
votes
2answers
170 views

Do I need to remove all “java|jre” packages from my system to be secure from java vulnerabilities?

Currently I have these installed on my Scientific Linux 6.3: [root@localhost ~]# rpm -qa | egrep -i 'java|jre' java-1.7.0-openjdk-1.7.0.9-2.3.7.1.el6_3.x86_64 ...
4
votes
3answers
19k views

Kill only one Java process

I usually run few Java applications, one for server running locally and other for some IDE like NetBeans. And from time to time, after lots of redeployments, my server get stuck on ...
1
vote
1answer
186 views

Point IP to an application instance

I was just wondering how I go about pointing a static IP address which I have purchased to an application instance on my server, using a different IP from the one I currently have pointing to my main ...
3
votes
2answers
2k views

Why isn't my environment variable visible from the command line?

I'm trying to run the James SMTP server on Lion (Mac OS X 10.7.2). When I do this: sudo JAVA_HOME=/Library/Java/Home ./james-2.3.2/bin/run.sh it works fine. However, I'd like to make JAVA_HOME an ...
2
votes
1answer
871 views

IBM Java Runtime Environment on CentOS

I need to install IBM's JRE, but I can't seem to find an appropriate download or guide to installing it on CentOS. I've found various zips, but none of them include an RPM and I have no idea where to ...
2
votes
1answer
11k views

Missing 32 bit library on a 64 bit Linux install

I am trying to figure out why Eclipse is complaining about being unable to find a library. I've managed to reproduce/reduce the java problem to: $ ldd ...
5
votes
1answer
2k views

update-alternatives just for one user

I'm using a shared server. On that server different versions of Java are installed: Selection Path Priority Status ...
6
votes
2answers
1k views

What is Debian's stance regarding GCJ and OpenJDK?

Both OpenJDK and GCJ are available for install on Debian, and now I wonder what's happening. Don't these provide same functionality?
3
votes
2answers
1k views

What is meant by stack in connection to a process?

From the book Advanced programming in the Unix environment I read the following line regarding threads in Unix like systems All the threads within a process share the same address space, file ...
5
votes
1answer
396 views

Installing OpenJDK on a Netbsd Sparc64 Server

I am currently working on a project that involves running the lift framework on a sun sparc64 architecture. Due to limited support from more popular unix distros, I am running NetBSD 64-bit on the ...
2
votes
0answers
632 views

Java uses max 8 cores on Debian, even though 16 are available [closed]

I have two servers at hand, both with 16 cores. The first is running Debian, the second running Ubuntu. I have written a small multithreaded java app that creates 16 threads. On the Debian machine, ...
2
votes
1answer
576 views

Problem with java3d

I want to play this java simulation: http://www.compadre.org/OSP/items/detail.cfm?ID=9640 in java 3d mode on a linux (ubuntu) system. But it doesn't work. If I switch to java 3d-mode it complains ...
5
votes
1answer
2k views

How do I update IcedTea?

I've only been using Linux for about a month. I'm running Mint 13. I'm trying to use www.goproblems.com but it tells me that my IcedTea is out of date. I hoped there was a package but I can't find ...
0
votes
0answers
841 views

Java SWT App: Need 64-bit swt.jar

I have a Java app that I want to run in Ubuntu, but I have Java 64 so I can't run it because it only has the 32-bit swt.jar. I can't build it myself, so Is there anyone that can provide the 64-bit ...
3
votes
0answers
237 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 ...
6
votes
1answer
32k views

How to completely remove Java 6 and install Java/JDK 7 on Linux Mint 13

How can I completely remove Java 6 and install Java/JDK 7 on Linux Mint 13?
5
votes
1answer
4k views

Use certain version of JRE / JDK for certain programs

I use ArchLinux, and an IDE called PyCharm. On its download page, it recommends using Java 6 instead of OpenJDK. ArchLinux has an OpenJDK package (jdk7-openjdk) that I have installed, installed, and ...
1
vote
1answer
488 views

How to start java application after machine reboot?

I'm wondering if there is easier way to start java application (just tomcat server) after machine has been rebooted? Possible answers: Add the application as a service and then add it using ...
2
votes
2answers
3k views

Java version for Tomcat

I want to run my Tomcat with Java 7 but all I found about configuring it doesn't work. The management interface of Tomcat shows 1.6.0_24-b24 as Java version. The JAVA_HOME variable is empty. % echo ...
1
vote
1answer
1k views

Using NetBeans on ARM Linux?

Is it possible to run NetBeans on a ARM CPU with Linux as OS (maybe Debian) ? I want to be clear I don't need to compile for ARM (I will use NetBeans only for PHP coding). So the question is about ...
1
vote
1answer
208 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 ...
2
votes
1answer
2k views

Installing jdk7 on Debian server via SSH

Currently, I'm trying to launch a java program on a server. The server is launched on my virtual machine (VirtualBox) and controlled over SSH. Its OS is Debian. So, in order to launch my program I ...
0
votes
1answer
1k views

Upgrade java on Linux Mint 11

I'm unable to use web-based java content due to my version being out of date. %>java -version java version "1.6.0_24" Java(TM) SE Runtime Environment (build 1.6.0_24-b07) Java HotSpot(TM) Server ...