Write Double Using Sockets : Socket « Network Protocol « Java

1. Java
2. Network Protocol
3. Socket

Write Double Using Sockets

    
// 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);
    }
  }
}

   
    
    
    
  

Related examples in the same category