How to accurately determine mime data from a file?

Question

I\'m adding some functionality to a program so that I can accurately determine the files type by reading the MIME data. I\'ve already tried a few methods:

Method 1:

Answer 1

I'm not entirely sure how accurate it is, but this worked for me in simple cases.

    FileNameMap fileNameMap = URLConnection.getFileNameMap();
    String type = fileNameMap.getContentTypeFor(filePath);