The javadoc of RuntimePermission should document the following two new targets
added in J2SE 1.4:

        selectorProvider

charsetProvider

   These RuntimePermission's are required to be granted to
   classes which subclass and implement java.nio.channel.spi.SelectorProvider
   or java.nio.charset.spi.CharsetProvider. The permission is checked
   during invocation of the abstract base class constructor. These
   permissions ensure trust in classes which implement these
   security-sensitive provider mechanisms.

   Please see java.nio.channels.spi.SelectorProvider() and
   java.nio.charset.spi.CharSetProvider() for more information.