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Questions tagged [java]

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

1
vote
4answers
389 views

Download JDK onto a remote server

I want to get the latest JDK onto a server in a remote location. Downloading the JDK from Sun's website requires jumping through all kinds of hoops until you actually get the file. I'm not sure ...
3
votes
2answers
584 views

Best free network monitoring tool for a handful of servers running (mostly) Java apps? [closed]

What are the best free tools for monitoring a set of servers running (mostly) Java apps? It would need to monitor several app servers (some JBoss, some Jetty, etc). All are started and stopped from ...
1
vote
1answer
419 views

Java 1.6 repaint speed inconsistent — and NetMeeting fixes it?

Has anybody seen a case where Java's graphics performance is terrible until you launch NetMeeting? Simply launching and quitting NetMeeting is enough to fix it. We're upgrading our JRE (to 1.6.0_12) ...
3
votes
8answers
536 views

Searching for good and reliable hosting provider [closed]

Recently faced with terrible service from 1and1 and planning to switch hosting provider. What can you recommend? I'm looking for Linux,PHP.MySQL, Java is a big plus.
4
votes
3answers
2k views

Fastest Open Source Java Application Server [closed]

Which Open Source Java Application Server is the fastest? Glassfish Jetty JBoss Others?
1
vote
8answers
2k views

Best Server For Java [closed]

I'm starting in Java Web development, then i want to ask, what is the best server, like Apache Tomcat, Resin and others. Remember that i use Linux Ubuntu. Thanks!
0
votes
3answers
755 views

Multiple *Almost* identical processes on a Linux Server

What is the best way to run multiple Almost Identical Java processes on the same Linux server? Explanation of the environment: We are running a set of Java processes that provide a calculation grid....
2
votes
7answers
533 views

Do you consider Java on your Linux server to be a problem? [closed]

If you wanted to use a utility on your Linux (or other Unix) server box, and it required Java, and no other application on your server required Java, would you be turned off that you had to install it?...
1
vote
2answers
266 views

How to copy an SVN repository periodically without losing the target tags, and branches?

We want to download (export, checkout) a complete repository, and import to a different repository (with all the commit messages) periodically so we can implement a tag/branch strategy. Background: ...
2
votes
1answer
2k views

GlassFish change port of web-service

I am new to Java and Linux. I have a JSP site and a java web service deployed on a GlassFish server (working OK). I need to change the port of both the application and web-service. I have changed ...
1
vote
3answers
12k views

Can you downgrade Java on a Mac?

I'm testing Snow Leopard for our IT team in preparation for it's actual launch. I'm currently running seed 10A394, which comes with Java JDK 1.6. I found one Java desktop application that no longer ...
8
votes
5answers
21k views

What is the difference between java.exe and javaw.exe?

On a Windows Server, I have 2 kinds of Java processes java.exe javaw.exe What are the differences ?
1
vote
2answers
2k views

hadoop - datanode decommission

I want to remove nodes from my cluster gracefully. I added the following to my hadoop-site.xml: <property> <name>dfs.hosts.exclude</name> <value>/etc/hadoop/conf.dist/...
10
votes
7answers
23k views

How to block access to a file from being served by Tomcat?

We have a few tomcat servers and we just discovered that some files that we don't want public to have access to those files. To exemplify: Let say we have a folder /var/www/html/ that we are ...
5
votes
4answers
236 views

What issues do you need to check for deploying a java application on linux?

What issues should be specifically checked for when deploying a server application written in Java (without any specific platform dependencies) that was written and tested on Windows. Two that I know ...
0
votes
1answer
87 views

Clientside Javascript --> Serverside Java --> user is served a .doc

I am helping someone out with a javascript-based web app (even though I know next to nothing about web development) and we are unsure about the best way to implement a feature we'd like to have. ...
1
vote
4answers
965 views

OpenCMS throwing Java Exception on TomCat Start

The Setup:- OpenCMS running on TomCat5.5 System running on FreeBSD with the DiabloJVM The OpenCMS system was working then after a restart of TomCat it stopped loading. The Database server (postgres) ...
0
votes
1answer
318 views

Proxy software to run your java programs, and allow console interaction with them over the network, to avoid long process startup times?

A while ago I ran across a project that did something like this, and I cannot find it now anywhere. The idea was this thing would run your java program for you, and you'd interact with it over the ...
16
votes
3answers
19k views

How do you manage Java in your Windows/Active Directory environment?

Like I suppose a lot of people, we have a Windows/Active Directory environment and a lot of internal line of business apps that require Java. Our experience is that Java does not play nice in such a ...
1
vote
2answers
828 views

What is a good strategy for diagnosing a Java Application Server that has stopped responding?

I have an installation of OpenSSO running on Glassfish. Everything is pretty much stock with as little configuration as possible to get the system working. I've started running into issues where the ...
2
votes
2answers
475 views

How can I safely upgrade java software?

I run a java application that's busy most of the time. When I need to upgrade it, I send it a message to exit cleanly at the next available opportunity, then upgrade the class files, then restart it. ...
4
votes
7answers
353 views

What platform do you run your java apps on?

Even though the JVM is cross-platform, there are be differences in behaviour; performance; stability. Some of them are quite clear, as in the heap size limitation on 32bit. Some of them are not, ...
-1
votes
3answers
1k views

What are the best linux performance tweaks for javac without a makefile?

What are the best linux performance tweaks for javac without a makefile? I am talking about the use of ant build files and IDEs that scan the source and create the dependencies as well as doing the ...
3
votes
3answers
3k views

Best way to deploy JRuby?

Background: I'm developing a Ruby web application, and have decided to switch to JRuby for several reasons that I'm not going to mention here. I have experience with servers such as Apache and ...
3
votes
5answers
20k views

Installing Tomcat on CentOS 5

Disclaimer: I am not a server admin, I am a windows user that has lead a life of sinful installation wizards and drag and drop I'm attempting to install Tomcat on CentOS 5 hosted by a MediaTemple ...
75
votes
9answers
194k views

Can't seem to disable Java Automatic Update

I'm just tweaking out my new Windows 7 laptop and wanted to disable the automatic Java updating (and thus kill the silly jusched.exe background process), but I can't seem to get it to actually turn it ...
2
votes
2answers
724 views

Proper manual deployment of a Java Application Server on Ubuntu Server 8.10 - Linux

I am currently preparing to deploy a JBoss AS into production for the first time. My Linux distribution is Ubuntu Server 8.10 . My original plan was to use aptitude to install JBoss. Currently ...
0
votes
4answers
195 views

Testing Java performance

There are a handful of different standard desktops and laptops at my company that I could choose from for developers on my team. Each is from a different company and comes with different load-outs of ...
9
votes
4answers
2k views

JVM Memory Consumption

I am trying to run tomcat on a low memory system (150-256Mb). Even though I start the JVM with -Xmx64m (which should be the default anyway), the process immediately takes up 200Mb+. I wonder why the ...
6
votes
2answers
8k views

Stopping Java from showing Update notice to all terminalserver users

on our terminal server all users have minimal (i.e. default) permissions. None are local administrators on that machine. Still Java Runtime displays message to every user that an update is available. ...
2
votes
3answers
194 views

where would be a sane place to put the jre folder?

I'm installing a debian server. The server needs a specific version of java, so I'm installing from the self-extracting file. But I'm new to the linux world and I want to put the jre in a place that ...
9
votes
1answer
78k views

Differences between classes12.jar, ojdbc14.jar, ojdbc5.jar and ojdbc6.jar

We are planning to upgrade our application servers to a new version of JRun which is carrying with it an upgrade from Java 1.4 to Java 1.6. As part of that, we have been testing various pieces of our ...
1
vote
1answer
2k views

GlassFish service stop when the console is logged out

I run a GlassFish server on a Win2k3 machine. If I do a remote desktop login to the console ("mstsc /console") and I log out, the application exits (the server does not shut down, the JVM is simply ...
3
votes
2answers
2k views

What Sun Web or App Server config can cause “Due to a temporary error the request could not be serviced”

I'm not the system administrator for this server but I'm trying to help the group who are sys admins to find a fix quickly. For this reason, I don't have access to all of the server configuration ...
2
votes
2answers
1k views

What is your experience using Hyperic HQ to monitor a distributed/clustered systems

I've been trying to find a good solution (that can run on Windows) for monitoring/trending/alarming a distributed system comprised of primarly Java technology (Tomcat, ActiveMQ, JBossCache, etc.), but ...
2
votes
5answers
2k views

Tools and Tips for Sun JVM Troubleshooting

We run a cluster of ColdFusion 8 servers on top of the Sun JVM, version 1.6.0_11. Occasionally a server will simply stop responding to requests. We've determined so far that the JVM is locking up ...
4
votes
3answers
6k views

How to install Java JRE on FreeBSD with as few dependencies as possible

I've been trying to get Java working on my FreeBSD 7.1 server. I just want the runtime, since the JDK drags all kinds of unnecessary dependencies with it, and I just need it to run a jar file ...
2
votes
8answers
8k views

What are best practices regarding multiple JVMs on a server?

Many third party products require a specific version of the JRE or JDK and many of our servers have multiple duties. Application teams argue they should not care where Java is installed. Most of the ...