fixed-format

Lightweight Java library for reading and writing fixed-width / fixed-length flat files using annotations on POJOs — for banking, payroll, EDI, mainframe, and batch integrations.

Fixed format (also known as fixed-width) is a data interchange approach where every field has a predefined column width and is space-padded as needed. It contrasts with delimiter-separated formats like CSV, and is widely used in legacy mainframe systems, banking files, healthcare claims, government filings, and Unix system files such as…