Como envio um arquivo via Applet

import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.io.*;
import javax.swing.*;
 

public class teste extends JApplet implements ActionListener
    {
    
     JButton jbutton = null;
     public void init()
         {
         jbutton = new JButton("Send file");
         jbutton.addActionListener(this);
         this.getContentPane().add(jbutton);
     }
    
     public void actionPerformed(ActionEvent ae)
         {
         if(ae.getSource() == jbutton)
             {
             try
                 {
                 File file = new File("c:\\teste.txt");// arquivo no meu disco
                
                 FileInputStream in = new FileInputStream(file);
                 byte[] buf=new byte[in.available()];
                 int bytesread = 0;
                
                
                 String toservlet = "http://localhost:8080/AginesReports/lab "; // endereço do meu servlets
                
                 URL servleturl = new URL(toservlet);
                 URLConnection servletconnection = servleturl.openConnection();
                 servletconnection.setDoInput(true);
                 servletconnection.setDoOutput(true);
                 servletconnection.setUseCaches(false);
                 servletconnection.setDefaultUseCaches(false);
                
                 DataOutputStream out=new DataOutputStream(servletconnection.getOutputStream());
                
                 while( (bytesread = in.read( buf )) &gt -1 )
                     {
                     out.write( buf, 0, bytesread );
                 }
                
                 out.flush();
                 out.close();
                 in.close();
                
                 DataInputStream inputFromClient = new DataInputStream(servletconnection.getInputStream());
                 
                 inputFromClient.close();
             }
             catch(Exception e)
                 {
                 e.printStackTrace();
             }
            
            
         }
     }

import java.util.Scanner;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
 
public class Testes extends HttpServlet {
    //leitura do txt
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        try {
             ServletContext sc = this.getServletContext();
            File arquivo = new File(sc.getRealPath("/WEB-INF/classes/txts/teste.txt")); // salva o arquivo do txt no endereço
            Scanner input = new Scanner(arquivo);
            String linha = "";
            while(input.hasNextLine()) {
                linha += input.nextLine() +&quot;<br>";
                System.out.println(linha);
            }
            
            response.setContentType("text/html");
            PrintWriter out = response.getWriter();
            out.println("&lt;HTML&gt;");
            out.println("&lt;BODY&gt;");
            out.println("<P>"+linha+"</P>");
            out.println("&lt;/BODY&gt;");
            out.println("&lt;/HTML&gt;&quot;);
            out.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        
    }
    
    // metodo que recebe o arquivo txt do applet
    public void doPost(HttpServletRequest req,HttpServletResponse res) {
        
        ServletContext sc = this.getServletContext();
        try {
            String fileName = &quot;teste.txt&quot;;
            String path = sc.getRealPath(File.separator)+&quot;/WEB-INF/classes/txts/&quot;+fileName;
            
            File yourFile = new File(path);
            FileOutputStream toFile = new FileOutputStream( yourFile );
            DataInputStream fromClient = new DataInputStream( req.getInputStream() );
            
            byte[] buff = new byte[1024];
            int cnt = 0;
            while( (cnt = fromClient.read( buff )) &gt -1 ) {
                toFile.write( buff, 0, cnt );
            }
            toFile.flush();
            toFile.close();
            fromClient.close();
            
        } catch(Exception e) {
            e.printStackTrace();
        }
    }
    
    
}