Server-Side Java - Java - page 652

}

}

Returning Object Information Across a Network Connection

Problem

You need to return an object across a network connection.

Solution

Create the object you need, and write it using an ObjectOutputStream created on top of the
socket's output stream.

Discussion

The program in Example 13-7 in the previous chapter reads a Date object over an Ob-
jectInputStream . Example 16-5 , the DaytimeObjectServer (the other end of that pro-
cess), is a program that constructs a Date object each time it's connected to and returns it to
the client.

Example 16-5. DaytimeObjectServer.java
public public class DaytimeObjectServer {

/** The TCP port for the object time service. */
public

class DaytimeObjectServer

public static static final final short short TIME_PORT = 1951 ;

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

ServerSocket sock ;
Socket clientSock ;
try

static void

try {
sock = new new ServerSocket ( TIME_PORT );

while while (( clientSock = sock . accept ()) != null null ) {

System . out . println ( "Accept from " +
clientSock . getInetAddress ());
ObjectOutputStream os = new

new ObjectOutputStream (
clientSock . getOutputStream ());

// Construct and write the Object
os . writeObject ( new

new Date ());