Java extract bit depth from jpeg-jfif picture

Question

I want to extract bit depth from jpeg file. I use Metadata Extractor but it return all bit depth of all jpeg file as 8 bits but all picture have 24 bits color depth.

Sample result:

[JPEG] - Data Precision = 8 bits
[JPEG] - Image Height = 1632 pixels
[JPEG] - Image Width = 1275 pixels
[JPEG] - Number of Components = 3

Is there any other library and example for extracting bit depth?