Mega Code Archive
Write Double Using Sockets
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// WriteDoubleUsingSockets - Client side that writes some objects to a stream
//
// Copyright (C) 1996 by Rinaldo Di Giorgio <rinaldo@digiorgio.com>. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
// SUCH DAMAGE.
import java.applet.Applet;
import java.awt.Label;
import java.io.DataOutputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import java.net.Socket;
import java.util.Date;
/**
* Write some objects over the network to a remote server that reads the stream
* and procceds to save the objects to disk.
*/
public class WriteDoubleUsingSockets extends Applet {
DataOutputStream os = null;
ObjectOutput s = null;
int PortNumber = 2000;
String ServerName = "traveler";
/**
* Set the server and port name
*/
public void initMain(String s, int p) {
ServerName = s;
PortNumber = p;
init();
}
public void init() {
Date d = new Date();
// Get the portnumber and servername and allow to be called from a
// java main program also
try {
String param;
param = getParameter("PortNumber");
if (param != null)
PortNumber = Integer.parseInt(param);
param = getParameter("ServerName");
if (param != null)
ServerName = param;
} catch (NullPointerException e) { // Must be called from a main ignore
}
try {
Socket skt = new Socket(ServerName, PortNumber);
os = new DataOutputStream(skt.getOutputStream());
} catch (Exception e) {
Label l = new Label(e.toString());
add(l);
System.out.println(e);
return;
}
try {
s = new ObjectOutputStream(os);
} catch (Exception e) {
System.out.println(e);
System.out.println("Unable to open stream as an object stream");
}
try {
long startTime = System.currentTimeMillis();
for (int i = 0; i < 25; i++) {
s.writeObject(new Double(i));
}
os.close();
long endTime = System.currentTimeMillis() - startTime;
Label l = new Label("Writing 25 doubles server took: " + new Long(endTime).toString()
+ " milliseconds.");
add(l);
System.out.println("Object written");
} catch (Exception e) {
System.out.println(e);
System.out.println("Unable to write Objects");
}
}
// //////////////////////////////////////////////////////////////////////////
// Example of an applet and a main sharing code and be parameter
// driven.
// //////////////////////////////////////////////////////////////////////////
public static void main(String args[]) {
WriteDoubleUsingSockets showSavingAClassNet = new WriteDoubleUsingSockets();
if (args.length < 2) {
System.out.println("Usage: ServerName PortNumber");
System.exit(0);
} else {
String ServerName = new String(args[0]); // Notice local scope of
// ServerName and PortNumber
int PortNumber = Integer.parseInt(args[1]);
showSavingAClassNet.initMain(ServerName, PortNumber);
}
}
}
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