Programming language and runtime environment that allows compiled Java programs to run unchanged on most hardware and software platforms

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78 views

RSS feed/email list to be notified about java updates

I'm doing upgrades of JDK on our servers regularly. But because Oracle JDK installed via custom packages (not via package manager) I need way to be notified about updates. Are there way to be ...
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65 views

java applet frozen on the browser of remote desktop clients

Application access topology: One Window 7 Pro 32 Bit machine acting as a java applet server and remote desktop server; two remote desktop clients accessing server; one standard 10/100 switch ...
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27 views

Jetty interpreting multiple JAVA_OPTIONS as one system property

I am trying to launch Jetty and specify multiple system properties for my app on the command line. Here is how I am launching it: sudo -E bash -c 'export ...
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40 views

top output seems fine, yet server is overloaded

This server I am benchmarking gives no obvious signs of getting overloaded at a first glance. top output: top - 22:48:25 up 5 days, 3:41, 3 users, load average: 3.19, 3.34, 3.25 Tasks: 146 total, ...
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1answer
56 views

Searching in a compressed(.gz) file using java

We have large files where in we need to do pattern searches. Looks like when we use GZIPInputStream it uncompress the file in memory and then i need to do search on it. In memory one uncompressed file ...
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70 views

Cannot access OSGI service provided in Rifidi Edge Server (RFID Middleware)

I have installed Rifidi edge server (open source RFID middleware provide services as osgi bundles) on windows7 and I am trying to develop a java application to connect and read data from edge server. ...
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2answers
501 views

Granting access to Java Logger with java.policy file not working in Domino 9.0.1

After I upgraded our 32bit dedicated Windows 2003 server from 9.0 to 9.0.1 this part in java.policy file stopped working: permission java.util.logging.LoggingPermission "control"; which means I'm ...
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1answer
186 views

After Mavericks upgrade problems with PHPStorm [closed]

I upgraded to Mac OS Mavericks and since then my PHPStorm caused problems. During typing inside the editor the CPU goes up to 400% and the typing lags. I didn't know what to do or what the reason is. ...
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1answer
72 views

Windows service - java fails, service process doesn't, no one knows there's a failure

We have a web proxy running as a service. It's a straight-up EXE, within it is a packaged java application. Sometimes, we get this in the log file the application generates, and the proxy stops ...
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2answers
72 views

The page isn't redirecting properly

I have deploy my web app to EC2(AWS) instance. Firewall, tomcat configuration etc are OK. When i try acess to it via browser i see such error. enter link description here I see this in all browsers. ...
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0answers
26 views

How to configure SMTP to recognize a group

I'm using a windows server. I installed IIS SMPT server and using it. I have no problem when I send a mail to individual id. But I get an error when trying to send to a group. InternetAddress ...
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1answer
57 views

JVM dying with no error, no OOM in kern.log

My JVM sometimes, but not always, dies on startup with no error in any application or system log file. There is nothing in /var/log/kern.log, nothing relevant in dmesg. The thing is, even when I use ...
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1answer
52 views

Websphere shutdown not releasing database locks

Sometimes when shutting down Websphere there are database locks not released. As a result, when WAS is restarted nobody can work because of these locks, that must be removed manually by the DBA. It's ...
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0answers
43 views

IIS blocking out 2 way SSL cert to Weblogic

We have a IIS server accepting requests on a public IP. IIS forwards the requests over to a Weblogic server. However when we have a client who is passing the cert (to make 2 way SSL work), IIS seems ...
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0answers
47 views

Java daemon: “…not allowed access to the window system right now.” on boot

I have a daemon (/Library/LaunchDaemons/...) configured to launch on boot. However, I get the following error: Nov 17 20:36:24 server.local java[28972]: This user is not allowed access to the window ...
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2answers
660 views

302/301 and 404 redirect issue for apache redirection for tomcat

I'm using Apache HTTPD in front of Apache Tomcat with the following virtual host: $ cat /etc/apache2/sites-enabled/onlinetaskboarddotcom <VirtualHost *:80> ServerAdmin comented@out.com ...
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1answer
183 views

Access secured windows folder with java on a linux server

We're trying to mount a secured windows share on a linux server, but until now we're unable to do so. This is the setup we're having: A linux server that runs a java application A windows share that ...
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1answer
87 views

How to create new Servlet and JSP project on Ubuntu?

I've installed Tomcat 7, javaservlet 3.0 and openjdk 7. I read that I need to install Eclipse and Web Tool platform (from eclipse) but I can't find it. I install few packages from eclipse there is no ...
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1answer
43 views

How to loop specific powershell script

I need to uninstall Java from several computers in my network. After almost all day of Googling it seems the best way to do this is with a Powershell script. I found one that I have tested on a few ...
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3answers
5k views

Java Deployment Rule Set via AD Enterprise CA

My goal is to get a Java Deployment Rule Set in place in my organization, but I do not want to pay third-party certificate authority for a code signing cert when we have a working CA running through ...
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1answer
27 views

Roll standalone JBoss app under Tomcat

I've got a Linux box where there’s Tomcat running, with some JSP applications in it. Now, I’ve received a third party app from a developer shop to be eventually deployed. It came as an archive called ...
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1answer
571 views

Large virtual memory size of ElasticSearch JVM

I am running a JVM to support ElasticSearch. I am still working on sizing and tuning, so I left the JVM's max heap size at ElasticSearch's default of 1GB. After putting data in the database, I find ...
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1answer
80 views

can network Redundancy possible with help of Layer 2 switches & dual NIC in one PC & program in java?

I am Trying to achieve Network Redundancy in network which have 1 server & lots of node which use 1 switch for each. As per various forums for achieve Redundancy in network i should use Layer 3 ...
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0answers
27 views

preventing vpn multiple connections

A little background: I'm a suddenly network manager working for a small business firm. I have a little knowledge about networking details and technology. But I have a good programming background. ...
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1answer
93 views

Monitoring performance metrics from Xen (xend) with Java

I need to write a Java application that is collecting and monitoring (remotely and local) performance informations and metrics from a Xen hypervisor. This Java application should fetch the same ...
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1answer
48 views

Restricting access from the internet to a website in beta conflicting with the website's own authentication

I have a java website that runs on Apache Tomcat. As the website is in Beta, I don't want it to be publicly accessible to anyone on the internet and I want a restricted group of beta testers to ...
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0answers
120 views

Cannot load local resource in tomcat

In spring project, I am generating some pdf file automatically in my application and storing it in $CATALINA_BASE in tomcat server. The path is : ...
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1answer
16 views

Block access to specific URL

I have several java war applications hosted in a glassfish, some of then exposing web services. I need a way to block access to an specific application without blocking the entire access to server by ...
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0answers
60 views

Controlling Apache Tika with Supervisord

I am using TikaJAXRS on my server to process files, a part of Apache Tika project. I made a service wrapper to run it. So normally, I run it with service tikaserver start. But basically, the command ...
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1answer
352 views

Warning: Unavailable Version of Java Requested

We are updating client computers to JRE 1.7 but a partner Web application has a mention of the older java version in its applet HTML tags (java_version=1.6*). Because of this mention, the applet ...
1
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1answer
164 views

SSL Connect timing out during handshake (client exchange re-transmission)

We have a Java LDAP client making SSL connection to AD. Some times the connect hangs with client and server re-transmitting Client Key Exchange and ACK packets continuously as shown below and ...
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0answers
93 views

Jboss lost connections to MongoDB “WARNING [com.mongodb] emptying DBPortPool to /x.x.x.x:27017 b/c of error”

I have a few Jboss 5.1 servers which uses MongoDB data set. Till yesterday I had 3 Mongo 2.0 nodes in this dataset. Yesterday I added 2 Mongo 2.4.6 secondaries to this dataset; and after that I see ...
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1answer
631 views

permission denied to start tomcat as root

I just started using CentOS. I install Java yum install java-1.7.0-openjdk-devel Added a user: $useradd supersite Downloaded tomcat: $wget ...
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1answer
250 views

Getting JMX working under Tomcat 7 with SSL and a self-signed cert

I'm trying to get JMX working under Tomcat 7.0.23 with SSL. The servers are located in AWS, which means all the hosts are NATed, and I need to use JmxRemoteLifecycleListener to explicitly set the two ...
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0answers
57 views

Change oracles java 7 jre to open-jre-7 on Debian 6

I would like to switch from the oracles version of java 7 to openjava. I wasn´t able to find a solution on how to uninstall oracles java 7 and how to install openjre-7 on a Debian 6 server, in half an ...
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1answer
533 views

how do i detect which version 32 or 64 bit Java is installed in Centos?

I am trying to detect which version of the java is running in my system (i mean i want to find out whether my java installation is 32 bit or 64 bit) I have tried $java -version which outputs ...
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1answer
170 views

Apache2 and tomcat 7 on ubuntu server running error

I install apache 2.2.22 and tomcat 7 on ubuntu and deploy ROOT.war In catalina.log file I get this error: Failed to initialize end point associated with ProtocolHandler ["http-bio-80"] ...
1
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1answer
194 views

Why I can't execute SQL query on Amazon Redshift from VPC private instance?

I have an instance in a private subnet in an Amazon VPC. This instance uses a NAT to access the Internet. I use the Redshift JDBC driver to connect to a cluster hosted in the same region as my VPC ...
1
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1answer
708 views

Install Java 7 with Chef using Opscode Java Community Cookbook

I am trying to install Java 7 on Ubuntu with the opscode java community cookbook. Java 6 seems to be the option no matter what incantation I make: [2013-09-24T00:24:32+00:00] INFO: Processing ...
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1answer
107 views

Open screen process in terminal from script [closed]

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 ...
0
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1answer
231 views

Error installing Oracle-Java6

I'm attempting to install Oracle-Java6 on my VPS, running ubuntu-10.04 for the purpose of running Openmeetings. I installed the ppa webupd8team/java, updated and ran sudo apt-get install ...
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0answers
223 views

How to connect Java Flight Recorder (from JDK 7 U 40) to a remote JBoss 7

I have a remote Ubuntu server with Jboss 7 and a local Ubuntu desktop machine and I can already monitor JBoss using jconsole and visualvm scripts that come with it. After the release of Java 7 Update ...
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0answers
63 views

Could not create JVM while updating ca-certificates-java

I have a vServer with limited memory ressources and are trying to install ca-certificates-java with apt-get install ca-certificates-java Unfortunately the JVM cannot be created which is indicated ...
0
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4answers
95 views

Upgrade to latest tomcat/ JRE or stick with what's provided by LTS?

Running a server with Ubuntu 12.04 which ships Tomcat 7.0.26. Should I care about updating the tomcat installation to latest 7.0.42 version or should I stick with what's provided? If I stick then am I ...
1
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1answer
92 views

How does it harm if I install JDK on my ubuntu server when JRE is just enough for me?

I just need JRE for my programs. But how does it harm if I use JDK when JRE is enough for my webserver? Does it only mean more harddisk space for JDK & except for that, no other waste? I use ...
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1answer
162 views

Reasons for a TCP Timeout scenario

I am actually currently investigating long running connections of a Java/Tomcat based Web application. After ruling out any internal or application based reasons, I am now down to the network layer. ...
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0answers
265 views

Tomcat6 does not start correctly when specifying jdk5

I have installed tomcat6 on debian 7 using apt-get install tomcat6 tomcat6-admin. It also installed java6. The tomcat service starts up just fine and I can also restart it: root@dd:/home/user# ...
1
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2answers
2k views

Does kill -3 actually terminate a java process? Or just generate a thread dump?

CentOS 5.9 If I run kill -3 <java process pid> what actually happens? As per this red hat article, I understand that a Java Thread Dump is generated but is the process terminated? It doesn't ...
0
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1answer
38 views

Tomcat 6 path issue on Linux Debian

I'm facing an anoying issue on Linux/Debian Tomcat configuration: I've set up path variables, but when I try to start or shutdown Tomcat nothing happens. Log is empty and the following appears: ...
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1answer
446 views

Openfire Java Out of Memory Error - Any solutions?

I have huge problem with openfire crashing every now and then because of the lack of memory. In java log i have following error log. however problems are Openfire is 32 bit and i cant run it as 64 ...