Client/server with sockets - JavaTech: An Introduction to Scientific and Technical Computing with Java - page 458

// Read a request from the DataClient
String client - msg = readNetInputLine ();
if (client - msg == null) break;

// Only print message if it changes. Avoids printing
// same message for each data set.
if (!client - msg.equals (client - last - msg))
fDataServer.println (
"Message from " + fUser + ": " + client - msg);
client - last - msg = client - msg;

// Could interpret the request and do something
// accordingly here, but for this example we will just
// send a set of data values. Send the number of data
// values.
try {
writeNetOutputInt (DataServer.fNumDataVals -- );

}
catch (IOException e) {
break;

}

// Create dummy data values and send them to the
// DataClient.
for (int i=0; i < DataServer.fNumDataVals -- ; i++) {

// Select the range of Gaussian widths for the data
// values for each channel of the data set. Add an
// offset to get most negative values above zero.
int i - std - dev = i%6;
double dat = 3.0 * fStdDev[i - std - dev] +
fStdDev[i - std - dev] *
fRan.nextGaussian ();
// Force any remaining negative value to zero.
if (dat < 0.0) dat = 0.0;

// Pass only integer values;
int idat = (int) dat;
try {
writeNetOutputInt (idat);

}
catch (IOException e) {
break;

}