java IOStream copy file

import java.io.*;

// not an ideal implementation by any means, just an example method

public class FileIO {
    public static void main(String[] args) throws Exception {
        // create Files, in and out
        File f1 = new File("in.txt");
        File f2 = new File("out.txt");

        try {

            // create instream and outstream
            FileInputStream in = new FileInputStream(f1);
            FileOutputStream out = new FileOutputStream(f2);

            int i;
            // while there is a char to be read, continue writing to outstream
            while ((i = in.read()) != -1) {
                out.write(i);
            }

            // close streams
            in.close();
            out.close();
        }

        // catch any exceptions
        catch (Exception e) {
            System.exit(0);
        }
    }
}