import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

/**
 * Example of reading from files 
 * in particular of reading from CSV files
 * 
 * @author gtowell
 * Created: Feb 2021
 */
public class Reader {
    /**
     * Read from the given file
     * @param fileName the name of the file to be read
     */
    public void readOneLineTCR(String fileName)
    {
        try (BufferedReader br = new BufferedReader(
                new FileReader(fileName));) {
            int lineCount = 0;
            while (br.ready()) {
                lineCount++;
            String line = br.readLine();
            String[] partsOfLine = line.split(","); //split the line at every comma
            for (int i = 0; i < partsOfLine.length; i++) {
                System.out.println(lineCount + "  " + i + "  " + partsOfLine[i]);
            }
            }
       } catch (FileNotFoundException e) {
            System.err.println("Opening issue " + e);
        } catch (IOException e) {
            System.err.println("Reading issue" + e);
        }  
    }
    public static void main(String[] args) {
        Reader r = new Reader();
        r.readOneLineTCR("aaa.csv");
    }
}