Java - Splitting a CSV file into an Array

Question

I have managed to split a CSV file based on the commas. I did this by placing a dummy String where ever there was a \',\' and then splitting based on the dummy String.

Answer 1

I don't see why you need a dummy string. Why not split on comma?

BufferedReader in = new BufferedReader(new FileReader("file.csv"));
String line;
while ((line = in.readLine()) != null) {
    String[] fields = line.split(",");
}

Answer 2

As per the dummy strings you mentioned, it could be easily processed with the help of an existing library. I would like to recommand the open source library uniVocity-parsers, which procides simplfied API, significent performance and flexibility.

Just refer to few lines of code to read csv data into memory with array:

private static void parseCSV() throws FileNotFoundException {
    CsvParser parser = new CsvParser(new CsvParserSettings());
    List<String[]> parsedData = parser.parseAll(new FileReader("/examples/example.csv"));

    for (String[] row : parsedData) {
        StringBuilder strBuilder = new StringBuilder();
        for (String col : row) {
            strBuilder.append(col).append("\t");
        }
        System.out.println(strBuilder);
    }
}

Answer 3

I would strongly recommend you not reinventing the wheel :). Go with one of the already available libraries for handling CSV files, eg: OpenCSV

Answer 4

use the followin it will split lines

               String[] a=scanner.next().split(" ");