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

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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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114 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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216 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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130 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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232 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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30 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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577 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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987 views

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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207 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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60 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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193 views

How can I build android on my debian while using eclipse ? (java dependencies problem) [closed]

I would like to compile a build for my android device (N4) with my debian (jessie). I read that I must have Java 6, but eclipse which I sometimes use seems to need java 7. For example, I uninstalled ...
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2answers
551 views

Installing OpenJDK 7 (JRE) but only policytools found in ./jre/bin

I'm trying to install Java 7 onto my Ubuntu machine through apt-get. I'm issuing the to install using apt-get: sudo apt-get openjdk-7-jre apt-get claims a successful install, but I cannot appear to ...
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242 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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228 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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1answer
118 views

Java PATH issue when installing JDK7 on centos 32 bit

I have Installed JDK 7 on CentOS 32 bit virtual machine. I also have set the path for java. In one terminal it is showing java1.7 But when I open another terminal and look for, java -version It is ...
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292 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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445 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 ...
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191 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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319 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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205 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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460 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 ...
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388 views

Editing the .profile file to access

I am trying to source my .profile file to easily access a directory of javatools. The bash code below seems like it should work but it does not. Any help troubleshooting this script would be very much ...
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582 views

How to install Java Runtime Environment 7 update 5 for x64 arquitecture on Debian OS?

The History: Hey guys I want to install JRE7u5 and not OpenJRE7u5 because, while doing a research on the web I discovery that Minecraft runs better on JRE, than with OpenJRE. The Failure: But the ...
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608 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 ...
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8k views

How to write a Java Program / Shell Script combination such that you can call the Java program as a remote command and yet supply a local file?

This is related to How to execute a remote command on a local file? I wrote a simple Java program that prints the first line of a file - import java.io.BufferedReader; import ...
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66 views

Is possible to change the value of '.' without actually change the current directory? [closed]

Can I make the value of . to be a different directory from the current directory? Background I'm learning Java. In the directory of my program, I have two sub-directories, src and bin. Every time I ...
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697 views

32 or 64 bit class file

I have a Java .class file. Now I want to check it was compiled on a 32 bit machine or 64 bit machine ? I tried file command but it just says it is a compiled java class. Is there any way to find it?
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841 views

Do I have duplicate packages?

I'm on linux mint 12, when i run sudo apt-get update i see: W: Duplicate sources.list entry http://www.duinsoft.nl/pkg/ debs/all i386 Packages ...
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453 views

How to execute Zeo Decoder Viewer on Linux?

I'm trying to execute Zeo Decoder Viewer (a Java application) on Linux, and I'm not sure how I'm supposed to do this. I've put the program and required libraries (all in jar files) in /opt/zeo/ ...
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892 views

RHEL/CentOS: Installing a new version of Java, why not just change the path?

I am installing a new version of Java on a CentOS/RHEL Linux distro for a single developer to develop java. The way I want to install on this development system is to just put the new java version ...
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3k views

installed java, but java -version not showing new java

I just installed jdk1.6.0. I have tried multiple ways to set the path variable and make java 1.6 my new running version. And nothing is working. Running centos5 virtual machine. alternatives --config ...
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58 views

How to remove JDK 7 and install JDK 8 in Linux Mint?

JDK 7 is already installed in Linux Mint by default. I want to remove it and to install JDK 8 instead. I youtubed and i found a tutorial. I followed it. What i did was, first i downloaded JDK from ...
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34 views

Which way is safer to read data from /sys

I am attempting to write a program that will monitor the temperature of various hardware components. The language I chose for it is Java. Now there are two ways I could read the temperatures: a) Do ...
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46 views

Updating Java on Linux

My machine currently has: [support@turndownForWhat sbin]$ java -version java version "1.5.0_10" I would like to know if there is any way possible to install/extract java 1.7 to a specific directory ...
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3answers
235 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 ...
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1answer
937 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 ...
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1answer
869 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 ...
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1answer
19 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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48 views

How to install openjdk properly?

Something wrong in my openjdk,i purge it and reinstall it. root@localhost:/home/debian# apt-get remove --purge openjdk-7-jre Reading package lists... Done Building dependency tree Reading state ...
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1answer
28 views

how to make special program run with different version of java from system? [duplicate]

My system need to use java 1.7. However, I need to run some old apps which require java1.6. Can I use shell script to let the old apps use correct java version? Could the $JAVA_HOME help? I try to ...
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2answers
123 views

/usr/java/jre1.8.0_31/bin/java.exe: No such file or directory

I've been trying to run a plugin inside a I have hired, and I've constantly been getting this error: [04:13:41] /bin/sh: /usr/java/jre1.8.0_31/bin/java.exe: No such file or directory Not too sure ...
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1answer
215 views

Can't install JPCAP library

I can't install JPCAP on my ubuntu machine. It tells that depends on sun-java6-jdk & libpcap0.8. However I do have them installed in my system as you can see. kujim@kujim:~/Downloads$ ldconfig ...
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32 views

Java in Gnu/linux servers

What is the use of installing java in linux server. I have seen initialising java paths in .bashrc and using them in different scripts. What does this all mean.please help. Dont have much knowledge ...
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620 views

Bash script class path issue with java

Content of /opt/scripts/jvm/jvm.script.sh #!/bin/bash JAVA_HOME='/java' PATH="$PATH:/$JAVA_HOME/bin" java -cp ./classes:./lib com.mystuff.bar.foo.myclass & Content of /etc/init.d/init.script.sh ...
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162 views

Starting Arduino IDE as root fails on Archlinux with KDE

I need to run the IDE as root to get access to the serial port. The command is ./arduino from inside the package folder. On Fedora this works fine, but on Archlinux the pocess chrashes with the ...
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697 views

NetBeans : Can't build Java project

I installed today on my old developer PC NetBeans (the newest) and I cloned my repo from BitBucket (I began coding with NetBeans on Windows 7). I tried to make a clean build, but the compiler has ...
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3answers
857 views

Solaris jdk 7 installation error java -version No such file or directory

Am trying to follow this website for instruction on how to install jdk for Solaris 10 with the following information: $ isainfo -v 64-bit amd64 applications ssse3 tscp sse3 sse2 sse fxsr mmx ...
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1answer
739 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... ...
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254 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 ...