File transfer to teh server

hi,,

I've been trying to make an application where the user select several fiels using JFileChooser and then the program read all the files and then save the content of all in 1 file and then send it to the server using client/server sockets, I've tried many ways and non seems to working .So whats the proper way to do it ? using DataOutputStream or FileOutputStream ?

this is my code :


public class Main {

static File[] f;


public static void main(String[] args) throws Exception {
JFileChooser jf = new JFileChooser("C:");
jf.setMultiSelectionEnabled(true);
jf.showOpenDialog(null);
int count=0;
f = jf.getSelectedFiles();

File allinone = new File("All.dat");
JFileChooser jf2 = new JFileChooser(allinone);
int returnVal = jf2.showSaveDialog(null);

ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(allinone));
DataOutputStream dos = new DataOutputStream(new FileOutputStream(allinone));
FileInputStream fis=null;


for (int i = 0; i < f.length; i++) {


fis = new FileInputStream(f[i]);

int fileSize = (int) f[i].length();

byte[] b = new byte[fileSize];

fis.read(b);
String text=new String(b);
String filename = f[i].getName();

System.out.println("FIle name " + filename + " size = " + fileSize);

dos.writeUTF(filename);
dos.writeUTF(text);
dos.flush();


fis.close();

count= count+2;

}
dos.writeUTF("TheEnd");
oos.close();

// Thats the part which on client side,then i want to send the file to
// the server to do the following

DataInputStream dis = new DataInputStream(new FileInputStream(allinone));//the part i want to replace to get my file so i can process it


while(count!=0){

String fn=dis.readUTF();
System.out.println(fn);
String text=dis.readUTF();
System.out.println(text);
count=count-2;
byte[] textB=text.getBytes();
File f=new File("new"+fn);
FileOutputStream ff=new FileOutputStream(f);
DataOutputStream dd=new DataOutputStream(ff);

dd.write(textB);

}
dis.close();
}
}