Small JAVA piece of software

I need a JAVA pgm that READS a given folder with .JPG files (each image contain a BARCODE on a fixed, given position) and generates a .TXT file where each line will show: 1- a 15 digit number corresponding to image barcode 2- image filename and extension Images attributes: .jpg 300 dpi grayscale A4 format RULES: (1) Pgm call ( .bat file ) will be something like java -jar [login to view URL] image_folder Xmm Ymm Lmm where image_folder = images folder absolute path Xmm = position X (milimiters) where barcode must be read Ymm = position Y (milimiters) where barcode must be read Lmm = barcode LENGHT (2) If NO image is found/ img can not be converted into number, the 15 first positions of that line must be filled with ZEROES (3) Output file ([login to view URL]) must be located on same image folder and must be overwrited with no warning, if alread exists. ===================== attached is some input files, for testing.