I'm trying to figure out how to replace binary data using Java. below is a PHP example of replacing "foo" to "bar" from a swf file.

<?php
$fp = fopen("binary.swf","rb");
$size = filesize("binary.swf");
$search = bin2hex("foo");
$replace = bin2hex("bar");
$data = fread($fp, $size);
$data16 = bin2hex($data);
$data16 = str_replace($search, $replace, $data16);
$data = pack('H*',$data16);
header("Content-Type:application/x-shockwave-flash");
echo $data;
?>

How do I do this in Java.