<dependency> <groupId>com.fasterxml.jackson.dataformat</groupId> <artifactId>jackson-dataformat-csv</artifactId> <version>2.12.0</version> </dependency> public class User { private int id; private String name; } CsvMapper csvMapper = new CsvMapper(); csvMapper.configure(MapperFeature.ACCEPT_CASE_INSENSITIVE_PROPERTIES, true); CsvSchema schema = CsvSchema.builder() .addColumn("id") .addColumn("name") .build(); MappingIterator<User> mappingIterator = csvMapper.readerFor(User.class) .with(schema) .readValues(new File("data.csv")); List<User> userList = mappingIterator.readAll(); List<User> filteredList = userList.stream() .filter(user -> user.getId() > 100) .collect(Collectors.toList()); CsvMapper csvMapper = new CsvMapper(); CsvSchema schema = CsvSchema.emptySchema().withHeader(); ObjectReader objectReader = csvMapper.readerFor(User.class).with(schema); ObjectWriter objectWriter = csvMapper.writerFor(User.class).with(schema); List<User> userList = objectReader.readValue(new File("input.csv")); for (User user : userList) { } objectWriter.writeValues(new File("output.csv")).writeAll(userList);