his homework isincluded in your final gradeand is scored out of8 points. Instructions: Complete...

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his homework isincluded in your final gradeand is scored out of8 points.  Instructions:  Complete 12.30 and the following problem  Students.java  The file students.txt has the following format on each line   fname(string) lname(string) credits(int) GPA(float) with a single space between each field.  For example  Mitchell Beck XXXXXXXXXXThelma Colon XXXXXXXXXXErma Mullins XXXXXXXXXXPedro Mack XXXXXXXXXX  A freshman has 0-29 credits, a sophamore has 30-59, a junior has 60-89 and a senior has 90+ credits. Write a program to open the file and read all the contents. Report back to the user the number of freshmen, sophomores, juniors and seniors. Output the first and last names of the person with the highest GPA for each of those categories.    Grading criteria  12.30 Letter Occurences  0.5 Prompt and read file name  1.0 Read file and process character data  0.5 Report A-Z frequencies  1.0 Form  1.0 Documentation    Students.java  1.0 Read data from file  0.5 Count and report number for each year  0.5 Report highest GPA for each year  1.0 Form  1.0 Documentation      Files:   students.txt(.txt, 2K)  Sample data file  Below is the data file   Mitchell Beck XXXXXXXXXX  Thelma Colon XXXXXXXXXX  Erma Mullins XXXXXXXXXX  Pedro Mack XXXXXXXXXX  Stella Diaz XXXXXXXXXX  Mona Conner XXXXXXXXXX  Gilbert Kim XXXXXXXXXX  Renee Miles XXXXXXXXXX  Cesar Warner XXXXXXXXXX  Krystal Pittman XXXXXXXXXX  Lonnie Evans XXXXXXXXXX  Lorene Murray XXXXXXXXXX  Gabriel Burgess XXXXXXXXXX  Timothy Pratt XXXXXXXXXX  Joseph Cummings XXXXXXXXXX  Lori Barrett XXXXXXXXXX  Salvador Simmons XXXXXXXXXX  Isabel Russell XXXXXXXXXX  Lawrence Swanson 9 0.67  Tracy Jennings XXXXXXXXXX  Lowell Wagner XXXXXXXXXX  Jackie Stanley XXXXXXXXXX  Joann Summers XXXXXXXXXX  Sally Bell XXXXXXXXXX  Robyn Ruiz XXXXXXXXXX  Misty Blake XXXXXXXXXX  Austin Morrison XXXXXXXXXX  Phillip Aguilar XXXXXXXXXX  Ana Burke XXXXXXXXXX  Rosa Ballard XXXXXXXXXX  Rachael Owens XXXXXXXXXX  Elmer Watson XXXXXXXXXX  Erica Horton XXXXXXXXXX  Rose Fernandez XXXXXXXXXX  Gregg Hubbard XXXXXXXXXX  Mathew Reyes XXXXXXXXXX  Winston Underwood XXXXXXXXXX  Scott Austin XXXXXXXXXX  Nettie Bryant XXXXXXXXXX  Brent Bass XXXXXXXXXX  Elias Hogan 5 0.13  Alyssa Collins XXXXXXXXXX  Kristen Ellis XXXXXXXXXX  Gerardo Williams XXXXXXXXXX  Van Reynolds XXXXXXXXXX  Tommie Doyle XXXXXXXXXX  Stacy Soto XXXXXXXXXX  Nancy Parker XXXXXXXXXX  Colleen Grant XXXXXXXXXX  Melvin Simpson XXXXXXXXXX  Janet Bowers XXXXXXXXXX  Frederick Lucas XXXXXXXXXX  Kristopher Garcia XXXXXXXXXX  Kayla Sherman XXXXXXXXXX  Matthew Mclaughlin XXXXXXXXXX  Kerry Howell XXXXXXXXXX  Monica Franklin XXXXXXXXXX  Hazel Dawson XXXXXXXXXX  Eleanor French XXXXXXXXXX  Diana Carlson XXXXXXXXXX  John Silva XXXXXXXXXX  Cody Taylor XXXXXXXXXX  Paula Wheeler XXXXXXXXXX  Eunice Higgins XXXXXXXXXX  Evan Reed XXXXXXXXXX  Robin Fuller XXXXXXXXXX  Yvette Norton 0 2.53  Lee Rice XXXXXXXXXX  Casey Blair XXXXXXXXXX  Alberto Willis XXXXXXXXXX  Dixie Hicks XXXXXXXXXX  Alfred Dennis XXXXXXXXXX  Debra Chavez XXXXXXXXXX  Joy Robertson XXXXXXXXXX  Kerry Bridges XXXXXXXXXX  Spencer Baldwin XXXXXXXXXX  Dana Curry XXXXXXXXXX  Josephine Wood 4 3.37  Whitney Andrews XXXXXXXXXX  Rudolph Hoffman XXXXXXXXXX  Edith Massey XXXXXXXXXX  Jamie Hawkins XXXXXXXXXX  Ernestine Daniel XXXXXXXXXX  Bill Cross XXXXXXXXXX  Norma Hayes XXXXXXXXXX  Jermaine Thornton XXXXXXXXXX  Sherry Wilkins XXXXXXXXXX  Floyd Gill XXXXXXXXXX  Jacob Medina XXXXXXXXXX  Sue Kelly XXXXXXXXXX  Cecilia Mckenzie XXXXXXXXXX  Boyd Benson XXXXXXXXXX  Anna Lambert XXXXXXXXXX  Alton Holt XXXXXXXXXX  Ricardo Kelley XXXXXXXXXX  Daisy Guerrero XXXXXXXXXX  Melissa Gray XXXXXXXXXX  Alex Wilkerson XXXXXXXXXX  Karl Moran XXXXXXXXXX  Curtis Hampton XXXXXXXXXX    Exercise 12.30

Aditya · Accepted Answer

Final/CountLetter
package countletter;
import java.io.*;
import java.util.Map;
import java.util.Scanner;
import java.util.TreeMap;
import java.*;
public class CountLetter{
   public static void main(String agrs[]) throws IOException
{   
    char[] alphabets = {'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'};
    int[] counts ={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
    int ch = 0;
    File file = new File("d:\output.txt");
    FileReader fr = new FileReader(file);
    BufferedReader br = new BufferedReader(fr);
    while ((ch = br.read()) != -1)
    {
       char character = Character.toUpperCase((char)ch);
       for(int i = 0;i Records = new ArrayList();
        String currentLine = reader.readLine();
        while (currentLine != null) {
            String[] Detail = currentLine.split(" ");
            String fname = Detail[0];
            String lname = Detail[1];
            int credits = Integer.valueOf(Detail[2]);
            float gpa = Float.valueOf(Detail[3]);
            Records.add(new Student(fname, lname, credits, gpa));
            currentLine = reader.readLine();
        }
        for (int i = 0; i  Records.get(j + 1).gpa) {
                    Student temp = new Student();
                    temp = Records.get(j);
                    Records.set(j, Records.get(j + 1));
                    Records.set((j + 1), temp);
                }
            }
        }
        BufferedWriter writer = new BufferedWriter(new FileWriter("D:\output.txt"));
        for (Student student : Records) {
            writer.write(student.fname);
            writer.write(" " + student.lname);
            writer.write(" " + student.credits);
            writer.write(" " + student.gpa);
            writer.newLine();
        }
        reader.close();
        writer.close();
        //TO FIND NUMBER OF FRESHMAN,SOPHAMORE,JUNIOR,SENIOR
        BufferedReader readers = new BufferedReader(new FileReader("D:\output.txt"));
        String Line = readers.readLine();
        int i = 0, j = 0, k = 0, l = 0;
        String freshmanfname="";

his homework is included in your final grade and is scored out of 8 points . Instructions: Complete 12.30 and the following problem Students.java The file students.txt has the following format on...

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