import java.io.*;
public class IODemo4{
    public static void main(String arg[]){
        String s=new String();
        try{
            BufferedReader in=new BufferedReader(
                      new FileReader("d:\\javacode\\source.txt"));
            PrintWriter out=new PrintWriter(
                      new FileWriter("d:\\javacode\\dest.txt"));
            out.println("the following is from source");
            while((s=in.readLine())!=null){
                System.out.println(s);
                out.println(s);
                }
            in.close();
            out.close();
            }catch (Exception e){}
        }
    }