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  Tutorial: Java Technology Fundamentals

Learn how to use variable arguments lists, the new JConsole utility to monitor applications, and discover ways to learn what you need to know to get Sun certified.

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Welcome to the Java Technology Fundamentals Newsletter.

This monthly newsletter provides a way for you to learn the basics of the Java programming language, discover new resources, and keep up-to-date on the latest additions to Sun Developer Network's New to Java Programming Center.

Java Programming Language Basics
Variable Argument Lists

Variable length argument lists are a way of defining a method that takes an arbitrarily long argument set. The calling method then loops through each argument, and processes accordingly. For instance, from a command prompt, you can ask your system for the directory of multiple locations.

Microsoft Windows
dir a* b* c*

Linux
ls a* b* c*

Each of these commands processes the directive by operating on the first argument, then on the second, and so on, until there are no more arguments. The same operation is performed on each, but there is no fixed limit to the number of locations to check. You can provide no arguments, and each command will default to looking in the current directory, or you can provide a set of directories to search, by providing a space-delimited list.


 

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