import java.util.Scanner;
import javax.swing.JOptionPane;

public class UtilsFL {

//---------------------------------------------------------------------------
// user input methods, by datatype
//---------------------------------------------------------------------------
// get an int value
public static int readInt(String prompt, boolean guiMode) {
   // set up data and objects
   Scanner input;
   int data = 0;
   boolean failed = true;

   input = new Scanner(System.in);
   /**
      * Add type-safe checking for both input modes, such that your method
      * loops endlessly until a valid int value is read.
      */
   while (failed) {

         /**
         * Type-safe checking for JOptionPane requires exceptions: see the
         * example code given for both modes in the “looping while type
         * safe” materials. Use the exceptions code almost exactly as-shown.
         */
         try {
            //--------------------------
            // prompt for an input int value using Scanner mode, for "false" case
            if (guiMode == false) {
               System.out.print(prompt);
               //Type-safe input handling [CSLO-4]
               data = Integer.parseInt(input.next());
            } // create the equivalent "else" steps using JOptionPane mode, for "true" case
            else {
               // get input
               String str = JOptionPane.showInputDialog(null, prompt).trim();
               // convert it to integer
               //Type-safe input handling [CSLO-4]
               data = Integer.parseInt(str);
            }
            /**
            * Handling of non-integer inputs with reprompting (in readInt)
            */
            failed = false;
         } catch (Exception e) {
         }
   }

   //--------------------------
   return data; // regardless of whether obtained by Scanner or JOptionPane
}

/**
* readChar() method to obtain single-character inputs
*
* @param prompt
* @param guiMode
* @return
*/
public static char readChar(String prompt, boolean guiMode) {
   // set up data and objects
   Scanner input;
   String data = "";
   boolean failed = true;

   /**
      * Assume you do NOT need to guard against 0-length input, but it’s a
      * nice check to add if you want to.
      */
   while (data.length() == 0) {
         //--------------------------
         // prompt for an input int value using Scanner mode, for "false" case
         if (guiMode == false) {
            input = new Scanner(System.in);
            System.out.print(prompt);
            data = input.next();
         } // create the equivalent "else" steps using JOptionPane mode, for "true" case
         else {
            data = JOptionPane.showInputDialog(null, prompt);
         }
   }
   //--------------------------
   // Type-safe checking is not needed

   return data.charAt(0);
}

Question 1: Write a program to read from a file “input4_01.txt” a...