Network Clients - Java - page 512

BufferedReader is = new BufferedReader(
new InputStreamReader(sock.getInputStream( )));
PrintWriter os = new PrintWriter(sock.getOutputStream( ), true);

Example 13-4 reads a line of text from the “daytime” service, which is offered by full-
fledged TCP/IP suites (such as those included with most Unixes). You don't have to send
anything to the Daytime server; you simply connect and read one line. The server writes one
line containing the date and time and then closes the connection.

Running it looks like this. I started by getting the current date and time on the local host, then
ran the DaytimeText program to see the date and time on the server (machine darian is one
of my Unix servers):

C:\javasrc\network> date
Current date is Sun 01-23-2000
Enter new date (mm-dd-yy):
C:\javasrc\network> time
Current time is 1:13:18.70p
Enter new time:
C:\javasrc\network> java network.DaytimeText darian
Time on darian is Sun Jan 23 13:14:34 2000

The code is in class DaytimeText , shown in Example 13-4 .

Example 13-4. DaytimeText.java
public public class class DaytimeText DaytimeText {

public public static static final final short short TIME_PORT = 13 ;

public public static void main ( String [] argv ) {

String hostName ;
iif ( argv . length == 0 )
hostName = "localhost" ;

static void

else else

hostName = argv [ 0 ];

try try {

Socket sock = new new Socket ( hostName , TIME_PORT );

BufferedReader is = new

new
InputStreamReader ( sock . getInputStream ()));
String remoteTime = is . readLine ();
System . out . println ( "Time on " + hostName + " is " + remoteTime );
} catch

new BufferedReader ( new

catch ( IOException e ) {