import com.genjava.csv.CSVReader; import com.genjava.csv.CSVWriter; CSVReader reader = new CSVReader("data.csv"); while (reader.hasNext()) { String[] row = reader.next(); // ... } CSVWriter writer = new CSVWriter("output.csv"); String[] row1 = {"John", "Doe", "johndoe@example.com"}; String[] row2 = {"Jane", "Smith", "janesmith@example.com"}; writer.writeRow(row1); writer.writeRow(row2); writer.close();