with this library you can walk through a directory with subdirectories and extract all picture-bound metadata.
Supported filetypes: jpg, CR2 and CR3 (thanks to exifTool)
To use the library: always take the latest release
To use this library, you can take the added jar file and copy it into your lib library or you can try to add the repository with jitpack (no garantee, not yet thoroughly tested, old example:
jitpack.io https://jitpack.io com.github.edleijnse filterpictures R1.0.3.20180523Programming example (copied from gui client in repository edleijnse/cloudninegui) :
ExtractPictureMetaData extractPictureMetaData;
extractPictureMetaData = new ExtractPictureMetaData(myChoosenDirectory, csvFile);
try {
extractPictureMetaData.createCSVFile();
} catch (IOException e) {
e.printStackTrace();
}