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A jar file is simply a file containing a collection of java files (typically, java .class files, but any other kind of file could be included as well). To make a jar file executable, you need to specify where the “main” Class is in the jar file, so the “java” command knows what main() method to invoke to get the software going. The procedure is quite simple, and this document provides step-by-step instructions. For more details on jar files, consult Lesson: Packaging Programs in JAR Files (The Java Tutorials > Deployment). 1. First, make sure you have installed Jav...

iFolder is a neat little innovation from the folks at Novell which helps you to share files easily. The blurb from their website explains it best: iFolder is a file sharing application for Linux, Windows, and Mac. Using iFolder workgroup sharing features, you can easily: * Share files across multiple computers * Share files with other users within your local area network Used with an iFolder Enterprise Server, you can: * Maintain a backup of your files on a server * Share files with other users and computers * Restore deleted files from backup I can see you itching to try it out already. So S...

Mac computers are becoming more popular everyday because of the immense popularity of iPods and iPhones. This is great for Apple, but can prove to be a pain if youve always run Windows (like me) and now you have to try and share files between the Mac and a PC! Migrating files from PC to Mac can be hard or easy depending on what versions of the OS you are running. For example, if you are trying to transfer files from a Windows 98 computer to a Mac G3 over a network, forget about it! Its too painful to configure and it would be much easier to simply burn a CD and move it over that way. Ho...