All of the links in the book are now available in an online document thanks to the great work of Jeff Oakes.
http://docs.google.com/Doc?id=dhftzx5_669z4wwgc4
One error I noticed: http://ist.berkeley.edu/as-ag/tools/howto/eclipse-plugins.html not http://ist.berkeley.edu/as/ag/tools/howto/eclipse-plugins.html
One error I noticed: http://ist.berkeley.edu/as-ag/tools/howto/eclipse-plugins.html not http://ist.berkeley.edu/as/ag/tools/howto/eclipse-plugins.html