"How can I launch Java Web Start from the command line?" on
Java Web Start version 1.5.0 Frequently Asked Questions (FAQ) at URL:
http://java.sun.com/j2se/1.5.0/docs/guide/javaws/developersguide/faq.html#212
has an invalid link for the example:

..
..
javaws [options] your-app-JNLP-URL
where your-app-JNLP-URL is the location of your application's JNLP file. For example:

javaws http://java.sun.com/products/demos/swingset2.jnlp
..
..

http://java.sun.com/products/demos/swingset2.jnlp is an invalid Link

Valid Link: http://java.sun.com/products/javawebstart/apps/swingset2.jnlp

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