[Geotools-gt2-users] How to extract data out of a GEOTIFF file

[ashwinD12 . <win...@gm...>]

I have a single band GEOTIFF file that represents land cover information. I
need to extract the following information from the GEOTIFF file

1) Whether it is big-endian or little -endian format
2) The land cover type corresponding to each latitude/longitude pair.
3) I also need to extract the color palette corresponding to each
latiitude/longitude pair.

GridCoverage2DReader reader = new GeoTiffReader(file);GridEnvelope
dimensions = reader.getOriginalGridRange();GridCoordinates
maxDimensions = dimensions.getHigh();int w =
maxDimensions.getCoordinateValue(0)+1;int h =
maxDimensions.getCoordinateValue(1)+1;

This is as far as I have gotten so far.

Would a nested FOR loop over the width and height  give me the
information I need ?

I apologize if this is too basic a question but I have tried all other options.