UDPReceive.java, Example 5-12
UDPSend.java, Example 5-11
UIManager, Example 11-28, Example 11-29, Example 11-30
UnicastRemoteObject, Example 21-2, Example 21-3, Example 21-5, 21-6, Example 21-7
unicode character set, Example 8-1
UnicodeDisplay.java, Example 8-1
untrusted classes
example service, Example 7-3
granting permissions, Example 7-2
URI, Example 5-6, Example 6-9, Example 6-14
URL, Example 5-1, Example 5-2, Example 11-21
mailto, Example 5-3
networking with, Example 5-1
obtaining information about, Example 5-2
openStream( ), Example 5-1
URLClassLoader, Example 7-1
URLConnection, Example 5-2, Example 11-18
user preferences, Example 11-29
User.java, Example 20-7
UserFactory.java, Example 20-8
