import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

public class Copy

{

public static void main(String[] args)

{

if (args.length != 2)

{

System.err.println("usage: java Copy srcfile dstfile");

return;

}

FileInputStream fis = null;

FileOutputStream fos = null;

try

{

fis = new FileInputStream(args[0]);

fos = new FileOutputStream(args[1]);

int b; // I chose b instead of byte because byte is a reserved word.

while ((b = fis.read()) != -1)

fos.write(b);

}

catch (FileNotFoundException fnfe)

{

System.err.println(args[0] + " could not be opened for input, or " +

args[1] + " could not be created for output");

}

catch (IOException ioe)

{

System.err.println("I/O error: " + ioe.getMessage());

}

finally

{

if (fis != null)

try

{

fis.close();

}

catch (IOException ioe)

{

assert false; // shouldn't happen in this context

}

if (fos != null)

try

{

fos.close();

}

catch (IOException ioe)

{

assert false; // shouldn't happen in this context

}

}

}

}