1  2  4
                2  3  5
                3   3  3

import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;


public class DataParser {
    private final List<char[]> charlist = new ArrayList<>();
    private final List<Double> doublelist = new ArrayList<>();

    public void parseLine(String line) {
        int charpos = line.indexOf('>');
        if (charpos >= 0) {
            charlist.add(line.substring(0, charpos).toCharArray());
            doublelist.add(Double.parseDouble(line.substring(charpos + 1)));
        } else {
            // the line does not have a >
            // throw an exception?
        }
    }

    public char[][] getChars() {
        return charlist.toArray(new char[charlist.size()][]);
    }

    public double[] getDoubles() {
        double[] ret = new double[doublelist.size()];
        int cnt = 0;
        for (Double d : doublelist) {
            ret[cnt++] = d;
        }
        return ret;
    }

    public static void main(String[] args) throws IOException {
        Path inputpath = Paths.get("hello.txt");
        List<String> inputlines = Files.readAllLines(inputpath, StandardCharsets.UTF_8);

        DataParser parser = new DataParser();
        // set up a loop over the input data
        for (String line : inputlines) {
            parser.parseLine(line);
        }
        char[][] chars = parser.getChars();
        double[] doubles = parser.getDoubles();

        System.out.println(Arrays.deepToString(chars));
        System.out.println(Arrays.toString(doubles));
    }

}