--- old/src/share/classes/java/nio/channels/SocketChannel.java	2012-11-23 16:00:30.520641568 +0800
+++ new/src/share/classes/java/nio/channels/SocketChannel.java	2012-11-23 16:00:30.384641566 +0800
@@ -337,6 +337,12 @@
      * that is, if an invocation of this method throws a checked exception,
      * then the channel will be closed.  </p>
      *
+     * <p> Once a connection is established,
+     * {@link java.nio.channels.Selector#select() Selector.select()} method
+     * should never select <tt>OP_CONNECT</tt> again. Please see
+     * {@link java.nio.channels.Selector#select() Selector.select()} for detail.
+     * </p>
+     *
      * @param  remote
      *         The remote address to which this channel is to be connected
      *