Question

Java Programming:

Scan a file and set up 3 different arrays from scanning through the .txt file. you should have 2 string arrays and 1 integer array.

I need help knowing how to read the file so that it puts the correct information into an array. It is all separated by spaces.

.txt file:

S SABQ138 3
A AABQ205 2
S SABQ127 1
A AABQ313 2
S SABQ126 2
A AABQ302 2

Answer 1

Dear Student ,

As per the requirement submitted above , kindly find the below solution.

Here a new java program with name "Main.java" is created, which contains following code.

Main.java :

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
//Java class
public class FileReader {
//main method
   public static void main(String[] args) throws IOException {
       // creating array of Strings
       String[] strArray1 = new String[6];
       String[] strArray2 = new String[6];
       // creating array of integer
       int[] intArray = new int[6];
       FileInputStream fstream = new FileInputStream("sample.txt");
       BufferedReader br = new BufferedReader(new InputStreamReader(fstream));
       String strLine;
       int i = 0;// declaring variable i
       // declaring a new array to split file
       while ((strLine = br.readLine()) != null) {
           String[] newArray = strLine.split(" ");// Splitting each line based on space
           strArray1[i] = newArray[0];// storing 0th element in strArray1
           strArray2[i] = newArray[1];// storing 1st element in strArray2
           intArray[i] = Integer.parseInt(newArray[2]);// storing 2nd element in intArray
           i++;// increment value of i
       }
       // print array elements
       System.out.println("strArray1 elements : ");
       for (i = 0; i < strArray1.length; i++) {
           System.out.print(strArray1[i] + " ");// print each array element
       }
       System.out.println("\nstrArray2 elements : ");
       for (i = 0; i < strArray2.length; i++) {
           System.out.print(strArray2[i] + " ");// print each array element
       }
       // print intArray elements
       System.out.println("\nintArray elements : ");
       for (i = 0; i < intArray.length; i++) {
           System.out.print(intArray[i] + " ");// print each array element
       }
   }

}

======================================================

Output : Compile and Run above program to get the screen as shown below

Screen 1 :Main.java

NOTE : PLEASE FEEL FREE TO PROVIDE FEEDBACK ABOUT THE SOLUTION.