ReadDifferentTypesFromFile.java

package uk.ac.chester;

import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        ArrayList<String> strings = new ArrayList<>();
        ArrayList<Integer> integers = new ArrayList<>();
        File dataFile = new File("Data.txt");
        try
        {
            Scanner fileScanner = new Scanner(dataFile);
            while (fileScanner.hasNext()){
                if (fileScanner.hasNextInt()){
                    integers.add(fileScanner.nextInt());
                    fileScanner.nextLine();
                } else
                {
                    strings.add(fileScanner.nextLine());
                }
            }
            fileScanner.close();
        }
        catch (FileNotFoundException e) {
            System.out.println("Cannot read from file");
        }


        System.out.println("Strings:");
        for (String string:strings)
        {
            System.out.println(string);
        }

        System.out.println(System.lineSeparator() + "Integers:");
        for (Integer integer: integers){
            System.out.println(integer);
        }

    }

}