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[JAVA] Reading from one file and writitng to another


Question

What I'm trying to do is read a set of names from one file and print it in the following format to another file:

Number <no> Hello <name>, Welcome

where <no> is a number generated by a for loop and <name> is the name read from a file. However my output is:

Number 1 Hello Hugo
Huffman
DickeryWelcomeNumber 1 Hello 
Thorpe
SebastianeryWelcome

The following is the code I used :

import java.io.*;
import java.lang.*;

public class ReadWriteFile {

		public static void main(String[] args) {
		try

		{
			java.io.FileReader fileReader = new java.io.FileReader(
					"textfile.txt");
			java.io.FileWriter fileWriter = new java.io.FileWriter("out.txt");

			FileWriter fstream = new FileWriter("out.txt");
			BufferedWriter out = new BufferedWriter(fstream);

			char[] buffer = new char[20];
			int byteCount = 0;

			for (int i = 1; i &lt; 10; i++) {
				while ((byteCount = fileReader.read(buffer)) &gt;= 0)

				{
					fileWriter.write("Number "+i+" Hello ");
					fileWriter.write(buffer);
					fileWriter.append("Welcome");
				}

			}

			fileWriter.flush();
			fileWriter.close();
			fileReader.close();

			System.out.println("Wrinting complete!");
		}
		catch (Exception e)
		{
			System.out.println(e.toString());
		}
	}
}

First off admittedly, the code isn't entirely mine. I got it from here and such there are quite a few things I don't understand such as what is the purpose of the buffer character array and why is it used? the use of fileWriter.append was my idea and apparently I don't seem to understand it's usage :p

anyways any help on this is greatly appreciated (even if it a refinement or a complete redo of the code) :)

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