Question

How to get and display some lines of a csv using openCSV.
I currently have the following code :

CSVReader reader1 = new CSVReader(new FileReader(mydata_csv.getpath()));
List myDatas = reader1.readAll();

How to display one specific line ?

Maybe can I use a better way to store my datas (the csv contains lines of hundreds variables). any suggestion would be welcome.

Answer 1

The documentation for opencsv http://opencsv.sourceforge.net/#how-to-read seems to say that your code returns a list of String[]

in which case I would write it like so:

CSVReader reader1 = new CSVReader(new FileReader(mydata_csv.getpath()));
List<String[]> myDatas = reader1.readAll();
String[] lineI = myDatas.get(i);
for (String[] line : myDatas) {
    for (String value : line) {
        //do stuff with value
    }
}