Join files again, after they're split into 1 kb chunks

Question

I have the below code in my program. It splits a single file into multiple files each 1 kb in size that when put together in the right order will make up the original text file. Anyone got any ideas on how I can write a class to do this?
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StreamTokenizer;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.StringTokenizer;
import java.io.*;
import java.util.*;
import java.lang.Object;
public class Split
public Split ()throws Exception {
          File f = new File("\\Shared");
          //File tempFolder = new File("C:\\Temp\\");
          File files[] = f.listFiles();
          for(int i=0;i<files.length;i++)
               String path = "C:\\Shared\\";
               String fileName = path +files.getName();
               String fileName1 = files[i].getName();
               Do(fileName,fileName1);
//Splits files
          public static void Do(String fileName , String fileName1)throws Exception
               try{
               BufferedInputStream in = new BufferedInputStream(new FileInputStream(new File(fileName)));
               byte[] buffer = new byte[1024];
               int read;
               int c;
               int i = 0;
               while( (read = in.read(buffer)) > 0 ){ //-1 means EndOfStream     
                    if( read == buffer.length )
                         BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream("C:\\Temp\\" + fileName1 + "_" + i));
                         out.write(buffer);
               out.flush();
               out.close();
               i++;
                    else
                         BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream("C:\\Temp\\" + fileName1 + "_" + i));
                         out.write(buffer, 0, read);
                         out.flush();
                         out.close();               
               in.close();
                    }catch(IOException e){
                         System.out.println(e);
public static BufferedInputStream readFile(String name) throws Exception {
File file = new File(name);
FileInputStream fis = new FileInputStream(file);
return new BufferedInputStream(fis);
public static void writeFile(String name, byte[] bytes) throws Exception {
File file = new File(name);
FileOutputStream fos = new FileOutputStream(file);
BufferedOutputStream out = new BufferedOutputStream(fos);
out.write(bytes);
out.flush();
out.close();

Answer 1

What part are you having trouble with? If you have the code to split a file up, putting it back together again should be trivial.