Question

Should be pretty simple: I have an InputStream where I want to peek at (not read) the first two bytes, i.e. I want the ‘current position’ of the InputStream to stil be at 0 after my peeking. What is the best and safest way to do this?

Answer – As I had suspected, the solution was to wrap it in a BufferedInputStream which offers markability. Thanks Rasmus.

Answer 1

For a general InputStream, I would wrap it in a BufferedInputStream and do something like this:

BufferedInputStream bis = new BufferedInputStream(inputStream); bis.mark(2); int byte1 = bis.read(); int byte2 = bis.read(); bis.reset(); // note: you must continue using the BufferedInputStream instead of the inputStream