ISOUtil

ISOUtil is jPOS's built-in utility class for encoding, byte manipulation, string padding, and more — already on your classpath, zero extra dependencies.

📄️ ISOUtil

org.jpos.iso.ISOUtil is one of jPOS's oldest and most widely used utility classes. It started life as a set of encoding converters—ASCII to BCD, ASCII to EBCDIC, and back—required internally by field packagers to handle ISO-8583 wire formats. Over the years it grew steadily, accumulating methods for string padding and trimming, byte array manipulation, BitSet handling, hex encoding/decoding, Luhn check digit calculation, amount formatting, and more.