mneri/csv

mneri/csv is a fast and easy-to-use library to read and write CSV files.

Memory consumption is also low. You can run mneri/csv on uniVocity benchmark with a 1MB JVM (-Xmx1m).

Example

To read a CSV file you use CsvReader class.

try (CsvReader<Person> reader = CsvReader.open(new File("people.csv"), new PersonDeserializer())) {
    while (reader.hasNext()) {
        doSomething(reader.next());
    }
}

Where PersonDeserializer is:

public class PersonDeserializer implements Deserializer<Person> {
    @Override
    public Person deserialize(RecycledCsvLine line) {
        Person person = new Person();
        person.setFirstName(line.getString(0));
        person.setLastName(line.getString(1));
        return person;
    }
}

Writing to a csv file is easy, too.

try (CsvWriter<Person> writer = CsvWriter.open(new File("people.csv"), new PersonSerializer())) {
    for (Person person : persons) {
        writer.put(person);
    }
}

Where PersonSerializer is:

public class PersonSerializer implements CsvSerializer<Person> {
    @Override
    public void serialize(Person person, List<String> out) {
        out.add(person.getFirstName());
        out.add(person.getLastName());
    }
}