| Source File | 
Description | 
Grep.java | 
Searches a list of files for lines that match a
given regular-expression pattern. Demonstrates NIO mapped byte
buffers, charsets, and regular expressions. | 
Sum.java | 
Computes 16-bit checksums for a list of files.
Uses NIO mapped byte buffers for speed. | 
TimeQuery.java | 
Asks a list of hosts what time it is. Is a simple,
blocking program that demonstrates NIO socket channels (connection
and reading), buffer handling, charsets, and regular
expressions. | 
TimeServer.java | 
Listens for connections and tells callers what
time it is. Is a simple, blocking program that demonstrates NIO
socket channels (accepting and writing), buffer handling, charsets,
and regular expressions. | 
Ping.java | 
Connects to each of a list of hosts and measures
the time required to complete the connection. Uses a selector and
two additional threads to demonstrate non-blocking connects and the
multithreaded use of a selector. | 
NBTimeServer.java | 
Implements a non-blocking Internet time
server. | 
The NIO.2 examples in the following table can be accessed in
your JDK 7 installation under
<JAVA_HOME>/sample/nio.
| Source File | 
Description | 
 | 
file/Chmod.java | 
Changes the permissions of files in a manner
similar to the chmod(1) utility. | 
file/Copy.java | 
Copies files in a manner similar to the cp(1)
utility. | 
file/DiskUsage.java | 
Prints out disk space information similar to the
df(1M) utility. | 
file/FileType.java | 
Prints out a file's type. | 
file/WatchDir.java | 
Watches a directory (or tree) for changes to
files. | 
file/Xdd.java | 
Lists, gets, and deletes the user-defined
attributes of a file. | 
multicast/MulticastAdress.java | 
Parses and represents a multicast address. | 
multicast/Reader.java | 
Reads a message from a multicast datagram. | 
multicast/Sender.java | 
Sends a message in a multicast datagram to a given
group. | 
server/README.txt | 
This directory contains a simple NIO-based
HTTP/HTTPS server example. See the README.txt file for further
information. |