Sheetz – Java Excel/CSV: one-liner API and million-row streaming

Sheetz literally reduces Apache POI boilerplate to Sheetz.read(...) / Sheetz.write(...), and it pairs that convenience with annotation-based mapping, a fluent multi-sheet builder, built-in streaming for million-row files, and row-level validation. It doesn't invent a new category—EasyExcel and POI already exist—but the one-line API, examples, and Maven releases make it an attractive, pragmatic choice when you need spreadsheet import/export without wrestling with workbook plumbing.