sendmsg.java

这是一个简单的文件传送程序.用java实现. 网络接口使用udp

package filetran;
import java.net.*;
import java.io.*;
import javax.swing.*;
/**
 * <p>Title: FileTran</p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: </p>
 * @author Netf
 * @version 1.0t
 */

public class sendmsg {
  DatagramSocket ss=null;
  DatagramPacket sp=null;
  String msgstr;
  InetAddress sadd;
  String ipstr;

  public sendmsg(String add,String msg) {
    this.msgstr=msg;
   this.ipstr=add;
try{
     ss=new DatagramSocket();
   }catch(IOException e){}
  }
  public void send(){
    try{
     sadd=InetAddress.getByName(ipstr);
     byte buf[]=new byte[1024];
       //JOptionPane.showMessageDialog(new FileTranFram(),msgstr);
      buf=msgstr.getBytes();

      sp=new DatagramPacket(buf,buf.length,sadd,1234);
      ss.send(sp);
    }catch(IOException e){}
  }

}