[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] [Z] UDP (Unreliable Datagram Protocol) connections, listening for datagram-based networking DatagramPacket class UIResource class ULAW encoded files unhandled events, passing up containment hierarchy UnicastRemoteObject class Unix systems, AWT component implementation on Unreliable Datagram Protocol [See UDP] untrusted code loading running update expression, in for statements updating databases 2nd auto-commit mode URLs base, for applet class file database MySQL PosgreSQL downloading contents of GetURL.java HttpURLConnection class JDBC, specifying JSP tags servlets, invoking through URL class URL class in WebBrowser program URLClassLoader class URLConnection class sending email through using WAR archives user space, transformations in User.java user.name system property UserFactory.java usernames, finding with HelloNet servlet |