Question

Hey I need help on Java. I have to create a while loop that reads 5 fields in each row, nextInt, nextInt, next, next, and nextLine. Then I have to instantiate a User object using those 5 fields and insert that object in the usersArr. I just need to see what this would look like if a text file with 5 fields for 5 users existed. Here's my code so far:

int [] usersArr = new int[200];
  
       System.out.print("Enter file name: ");
       Scanner input = new Scanner(System.in);
       String inputFile = input.nextLine();  
       File myFile = new File(inputFile);
       Scanner scan = new Scanner (myFile);  
       int LineCount = 0;
       while(scan.hasNextLine())
       {
           scan.nextInt();
           scan.nextInt();
           scan.next();
           scan.next();
           scan.nextLine();
           for (int i = 0; i <= 200; i++)
           {
           usersArr[i] = new User();
           }
          
       }

Answer 1

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

class User {
   private int a1;
   private int a2;
   private int a3;
   private int a4;
   private int a5;

   public User(int aA1, int aA2, int aA3, int aA4, int aA5) {
       super();
       a1 = aA1;
       a2 = aA2;
       a3 = aA3;
       a4 = aA4;
       a5 = aA5;
   }

   @Override
   public String toString() {
       return a1 + "," + a2 + "," + a3 + "," + a4 + "," + a5 + "\n";
   }

}

public class TestUser {
   public static void main(String[] args) throws Exception {
       User[] usersArr = new User[5];

       System.out.print("Enter file name: ");
       Scanner input = new Scanner(System.in);
       String inputFile = input.nextLine();
       File myFile = new File(inputFile);
       Scanner scan = new Scanner(myFile);
       int LineCount = 0;
       while (scan.hasNextLine()) {

           usersArr[LineCount++] = new User(scan.nextInt(), scan.nextInt(), scan.nextInt(), scan.nextInt(),
                   scan.nextInt());
       }
       for (int i = 0; i < 5; i++)
           System.out.println(usersArr[i]);
   }
}

E Console 3 temid> TestUser Java Application] C1Soft PegaEcli Enter file 1,2,3,4,5 name: input.txt 2,3,4,5,6 10,20,30,40,50 11,12,14,19,12 54,67,45,65,76