package aplication;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
import javax.swing.JOptionPane;


public class sendFile {
    public static void main(String[] args) throws IOException {
        String pilihan=JOptionPane.showInputDialog("select 1 or 2");
        int a=Integer.parseInt(pilihan);
        if (a==1){
        ServerSocket ServerSocket=new ServerSocket (6066);
        Socket sock =ServerSocket.accept();

        File myfile=new File ("D:\\data1.txt");
        byte[]mybytearray=new byte [(int)myfile.length()];




        BufferedInputStream bis =new BufferedInputStream(new FileInputStream(myfile));
        bis.read(mybytearray,0,mybytearray.length);

        OutputStream os=sock.getOutputStream();
        os.write(mybytearray,0,mybytearray.length);
        os.flush();

        sock.close();}
            else {
        ServerSocket ServerSocket=new ServerSocket (6066);
        Socket sock =ServerSocket.accept();

        File myfile=new File ("F:\\data2.txt");
        byte[]mybytearray=new byte [(int)myfile.length()];
        BufferedInputStream bis =new BufferedInputStream(new FileInputStream(myfile));
        bis.read(mybytearray,0,mybytearray.length);

        OutputStream os=sock.getOutputStream();
        os.write(mybytearray,0,mybytearray.length);
        os.flush();

        sock.close();
        }
    }
}

************************************************************************************************************************
secound program: receive program
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package aplication;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.Socket;
import javax.swing.JFileChooser;

public class receive {
    public static void main(String[] argv) throws Exception{

        JFileChooser pilih=new JFileChooser();
       pilih.setDialogTitle("Tentukan Tempat Penyimpanan");
       int userSelection = pilih.showSaveDialog(null);
       if(userSelection == JFileChooser.APPROVE_OPTION){
           File fileToSave = pilih.getSelectedFile();
           System.out.println("Save as file : "+ fileToSave.getAbsolutePath());

                  }

        Socket sock=new Socket("localhost", 6066);
        byte[]mybytearray =new byte[1024];
        InputStream is =sock.getInputStream();
        FileOutputStream fos=new FileOutputStream("E:\\data.txt");
        BufferedOutputStream bos = new BufferedOutputStream (fos);
        bos.flush();

    }
        private javax.swing.JTextArea txtPath;
}