Question

this is my first question here so I hope I’m doing this right. I have a programming project that needs to read each line of a tab delimited text file and extract a string, double values, and int values. I’m trying to place these into separate arrays so that I can use them as parameters. This is what I have so far(aside from my methods):

import java.io.FileNotFoundException;
import java.io.FileReader;
import java.util.Scanner;

public class LoanDriver {

public static void main(String[] args)
{
    String[] stringData = new String[9];
    Scanner strings = null;

    try 
    {
        FileReader read = new FileReader("amounts.txt");//Read text file.
        strings = new Scanner(read);

        String skip = strings.nextLine();//Skip the first line by storing it in an uncalled variable

        strings.useDelimiter("\t *");//Tab delimited


    }
    catch (FileNotFoundException error) 
    {}

    while (strings.hasNext())
        {
            String readLine = strings.next();
            stringData = readLine.split("\t");
        }
}}

If I try to get the [0] value, it skips all the way to the bottom of the file and returns that value, so it works to some extent, but not from the top like it should. Also, I can’t incorporate arrays into it because I always get an error that String[] and String is a type mismatch.

Answer 1

Instead of using delimiter, try reading the file line by line using Scanner.nextLine and split each new line you read using String.split (“\t” as argument).

try {
    FileReader read = new FileReader("amounts.txt");//Read text file.
    strings = new Scanner(read);
    String skip = strings.nextLine();//Skip the first line by storing it in an uncalled variable
}
catch (FileNotFoundException error) { }

String line;
while ((line = strings.nextLine()) != null) {            
     String[] parts = line.split("\t");
     //...
}