I am using commons.imaging library to add metadata to image by using exifDirectory.add() and exifDirectory.removeField() functions. But I am not able to add customized tag in image. Can someone help me out with this. Instead of "ExifTagConstants.EXIF_TAG_EXPOSURE" I want my own custom title
final JpegImageMetadata metadata =(JpegImageMetadata)Imaging.getMetadata(jpegImageFile);
final JpegImageMetadata jpegMetadata = metadata;
final TiffOutputDirectory exifDirectory = outputSet.getOrCreateExifDirectory();
exifDirectory.removeField(ExifTagConstants.EXIF_TAG_EXPOSURE);
exifDirectory.add(ExifTagConstants.EXIF_TAG_EXPOSURE, "P100111");