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Frequently Asked Questions

When installing VolanoChat and a Java Virtual Machine, how should I set up the directory structure?

Frequently Asked Questions - VolanoChat Administrator Guide
You can install the server right under your home directory, such as /home/john, for example. That would put the VolanoChat server in: /home/john/vchat2.0.0 The client applet must be moved to your public HTML directory. In the example above, you would need to move /home/john/vchat2.0.0/vcclient to your public HTML directory, such as: /home/john/public_html/vcclient or any other public HTML directory). Most Java virtual machines can be installed in your home directory as well.
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How can I set JAVA_HOME variable on my machine?

FAQ - GEANT2-JRA1 Wiki
You can follow the suggestion below x@y:/$ pico /etc/profile Put this text at the end (make sure you enter valid location of your java directory): export JAVA_HOME=/usr/java/jdk1.5.0_09 export PATH=$JAVA_HOME/bin:$PATH export JRE_HOME=/usr/java/jdk1.5.0_09/jre export PATH=$JRE_HOME/bin:$PATH export CLASSPATH=.:$CLASSPATH:/usr/java/jdk1.5.0_09/lib
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What Java virtual machine (JVM) do I use to run the AspectJ compiler?

AspectJ Frequently Asked Questions
Use the latest, greatest, fastest JVM you can get your hands on for your platform. The compiler's performance is dependent on the performance of the JVM it is running on, so the faster a JVM you can find to run it on, the shorter your compile times will be. At a minimum you need to use a Java 2 or later JVM to run the compiler (J2SE 1.3 for AspectJ 1.1). We realize that this constraint can be a problem for users who don't currently have a Java 2 JVM available.
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How can I uninstall the Microsoft Java Virtual Machine (JVM) from Windows XP?

The Broadband Reports Windows XP FAQ - dslreports.com
You might want to remove the Microsoft JVM, which Microsoft no longer supports, in favor of the more recent Sun Microsystems JVM. To remove the Microsoft JVM, perform the following steps: The HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\AdvancedOptions\JAVA_VM registry subkey (to remove the Microsoft Internet Explorer (IE) options When Internet Explorer 7 is installed on Windows XP, ctfmon.exe runs in the background without purpose, and when the Run entry for ctfmon.
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What is the Microsoft Java Virtual Machine?

Transitioning from the MSJVM: Frequently Asked Questions
The Microsoft Java Virtual Machine (MSJVM) is technology that has been included in some versions of Microsoft Internet Explorer, a component of Microsoft Windows?. This technology allows certain types of programs, called Java applications or Java applets, to run on Windows-based computers. The only change is the date of end of support for the MSJVM, to December 31, 2007, from September 30, 2004.
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How do I increase the memory for the Java Virtual Machine?

SQL Developer - FAQ
Usually the default memory configuration of your VM should be sufficient to work with SQL Developer. If you want to increase the available memoy anyway you will have to start the application with additional command line options. If you use a Sun Microsystem Java VM open a shell window, change to the SQL Developer folder and type java -Xmx256m -jar sqldeveloper.jar to start with a maximum heap memory of 256 MB. The default maximum heap size is 64 MB.
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How do I check my Java Virtual Machine version?

University of Tennessee: Distance Education Technology
Go to your start button and click on Run. Type in "command" (in Windows 98) or "cmd" (Windows 2000 or XP) and click OK. At the command prompt type in "jview" and hit Enter. The very top line should read "Microsoft ? command-line loader for java version #.##.####". Those #'s should be 4.79.2339 or above. If your version is not up-to-date, see the Computer Requirements for a link to an update version of the JVM.
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What is the directory structure for the texts?

Internet Archive Frequently Asked Questions
In order to store all the texts that the archive has, and will eventually acquire, the directory structure is: IDENTIFIER: Unique in Archive's collection, alphanumeric (URL safe), this is the original name adopted by the originating collection (alphanumeric characters and _-. Best if from 5 to 80 characters). One format is [title:8-16][vol:2][author:4][scanninglocation:0-4] IDENTIFIER_orig.tif: All the orginal tiffs are stored in the form of multi page tiff.
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Is CLDC a virtual machine?

J2ME CLDC and K virtual machine: Frequently Asked Questions
No. CLDC specifies the core libraries and virtual machine features for J2ME implementations on resource-constrained devices. A CLDC implementation includes a virtual machine. For instance, KVM is included in the CLDC reference implementation.
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What is the K virtual machine (KVM)?

J2ME CLDC and K virtual machine: Frequently Asked Questions
K virtual machine (KVM) is a Java virtual machine that provides the basis for the CLDC reference implementation (RI). K stands for "Kilobyte" virtual machine, referring to the small footprint of the platform. The K virtual machine is very small -- starting from approximately 70K in size.
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Why not Factor for the Java Virtual Machine or .NET?

Frequently asked questions
Originally, Factor was written in Java, and there was a compiler to JVM bytecode. But, to improve speed and the foreign function interface, Factor was rewritten in C and Factor. JFactor was abandoned in favor of CFactor. At this point, basicaly no Factor code would work in the old JFactor unmodified, as JFactor is missing several key features like generic words and syntax extension. Factor is currently natively compiled, not bytecode compiled.
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Can I run a Java virtual machine in an IPm controller?

SIXNET - Leading the way in Industrial Ethernet, Modems, LIN...
No, you cannot. Java requires a huge amount of memory and considerable processing horsepower to run. Here is our advice: One of the things that makes Java so big is its support for graphics. If you need graphics in your application, the IPm is not suited for your application (since it is a blind node). If you don't need graphics, we suggest porting your application to efficient and highly portable C code. We have been told that Java is not as portable as Sun Microsystems would have you believe.
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Which Java virtual machine do I need to run D2K?

ALG: D2K FAQs
J2SE 1.3 or later is required. We have not tested extensively with the latest 1.5 JVM. So we packaged a 1.4.x JVM with the latest installer of D2K 4.1.1.
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How can I change the Java virtual machine that runs D2K?

ALG: D2K FAQs
D2K is installed using the InstallAnywhere product. On Windows and Unix platforms, the runtime parameters of D2K are customizable by editing the <INSTALL-DIRECTORY>/d2k.lax file. If you want to change the Java Virtual Machine, modify the lax.nl.current.vm item. On the Mac OSX platform, you should edit the <INSTALL-DIRECTORY>/D2KToolkit/D2KToolkit.app/Contents/Info.plist file. This file is only visible when using the Terminal application.
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Which other Java? Integrated Development Environments (IDEs) work with the PERC virtual machine?

Aonix - PERC - FAQ
The PERC virtual machine provides support for a subset of the Java? Debug Wire Protocol (JDWP). Developers have used a variety of different Integrated Development Environments to develop programs for the PERC virtual machine, including Forte, JBuilder, and Eclipse.
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Where can I download or upgrade to the latest version of Microsoft Java Virtual Machine?

Citadon
Microsoft has discontinued any direct downloads of their Java Virtual Machine from their web pages. Any user who requires the latest version of Java VM will need to install it through their Windows Update web page. You can read more about installing the latest Java VM build here. Back to top When I log into ProjectNet Docs, I receive this error message: Invalid Username/Password, please try again. Resolution: Usernames and passwords are case-sensitive, so be sure that Caps Lock is not turned on.
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Why do I need a Java virtual machine to run J-DSP?

www.needs.org: A Digital Library For Engineering Education
J-DSP is a set of Java applets that require a Java virtual machine to run properly. Before launching J-DSP, the courseware will provide you with the opportunity to link to Sun to download the latest Java virtual machine at http://java.com/en/index.jsp (Windows-only). If you are a Mac user you can download a current Java virtual machine directly from Apple at http://docs.info.apple.com/article.html?artnum=120209.
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I get the error message: Could not create the Java virtual machine. What do I need to do?

BEA JRockit Developer's FAQ
Please check the spelling of the startup options that you have used. If you still cannot start the JRockit, look in the Reference Manual for the available startup options.
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Q6) Where would I find a Java Virtual Machine to run on an IVC Display?

Knowledge Base
A6) NSIcom CrEme JVM will work. Follow the Software Application Installation Application Note. This may require additional program memory. If so, from the download page, download and install the NP-612S 20M Program Memory Image. Follow the Windows CE Download Instructions.
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How do I set the initial directory for file dialogs in my Java application?

Modelworks Software
The best solution is to set the user.dir property in java.lang.System to your initial directory before displaying any file dialogs. In Windows the default initial directory for standard file dialogs is the current directory. The runApplication and debugApplication scripts sets the current directory to the classpath of the class being run before executing the Java command line. You can also change the current directory for you application by using the Project/Set Runtime Directory..
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What is a Virtual Directory?

WWW File Share Pro- FAQ
For example, if you have already shared the directory - 'c:\files\', now you want to share one more directory "d:\doc\". Then you have two choices: If you do not use 'virtual directory', you must copy the directory 'd:\doc\' into 'c:\files\'. Now you can access it with this URL: If you use 'virtual directory', you can add a new virtual directory for 'd:\doc\', set the alias as 'doc'. Now you will have the same URL: This will access 'd:\doc\' directly.
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DNO FAQ
To publish from any directory not contained within your home directory, you create a virtual directory. A virtual directory is a directory that is not contained in the home directory but appears to client browsers as though it were. Each virtual directory points to a directory contained inside the site's file system and is referred to as the home directory for that particular virtual directory.
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How can I find out where Java is installed on my machine?

FAQ - GEANT2-JRA1 Wiki
Just open console and enter: (1) x@y:/$ update-alternatives --config java (if more than one java is installed) or (2) x@y:/$ find / -name \*java\* or (3) x@y:/$ locate java or (4) Ask your system administrator to find it out for you
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What’s Java and why do I need it on my machine?

NWACC - Distance Learning - FAQ - Frequently Asked Questions
Java is a programming language that many web applications use to run miniature applications on your PC, or to run scripts that perform certain tasks. WebCT uses Java (and JavaScript, a scripting language that does smaller jobs of this sort), so you need to have Java on your PC. Most browsers come with Java and JavaScript active already, but some do not. The most common problem we’ve seen recently is newer computers with Windows XP that don’t have Java on them.
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Can I use Protégé with the Microsoft Java Virtual Machine?

Protégé FAQ
No. Protégé requires a JDK 1.4 compatible virtual machine (Protégé 3.1 requires JDK 1.4 , Protégé 3.2 beta requires JDK 1.5). The last we are aware of, the MSJVM only supports JDK 1.1. Microsoft also plans to terminate support for the MSJVM on September 30, 2004.
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What version of Java Virtual Machine or Runtime Environment do I need to run DB/XML Transform?

DB/XML Transform has two modes: graphical user interface mode, and non-graphical mode. For the graphical user interface (the default mode), you will need Java Virtual Machine or Java Runtime Environment 1.2 or higher. The latest JDK version for Windows platforms is 1.3, available for download on Sun's website. For your convenience, we have included the JRE 1.3 in one of our DB/XML Transform install program.
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Is a virtual machine all that's needed to run a small application?

J2ME CLDC and K virtual machine: Frequently Asked Questions
No. A virtual machine requires a set of core libraries to run applications. Some of these libraries are packaged as a part of a CLDC implementation along with the virtual machine. In addition, the capabilities of CLDC can be extended by adding profiles such as the Mobile Information Device Profile (MIDP) and/or optional packages.
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What is a virtual machine?

Server Virtualization FAQ - IT Management
quot;Virtual machine" is the term applied to the server environments running on a piece of hardware. So, in the example above, the decoupled Linux and Windows servers running on a single blade server would be referred to as virtual machines.
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Can applications that run on CLDC-compliant virtual machines run on other Java Virtual Machines?

J2ME CLDC and K virtual machine: Frequently Asked Questions
Yes. CLDC-based applications can execute in other Java Virtual Machines, provided that the required CLDC libraries, profiles, and/or optional packages are also available.
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