
Concept explainers
Write a JAVA
The program performs the following tasks:
- Read the file name of the tsv file from the user.
- Open the tsv file and read the student information.
- Compute the average exam score of each student.
- Assign a letter grade to each student based on the average exam score in the following scale:
- A: 90 =< x
- B: 80 =< x < 90
- C: 70 =< x < 80
- D: 60 =< x < 70
- F: x < 60
- Compute the average of each exam.
- Output the last names, first names, exam scores, and letter grades of the students into a text file named report.txt. Output one student per row and separate the values with a tab character.
- Output the average of each exam, with two digits after the decimal point, at the end of report.txt. Hint: Use the precision sub-specifier to format the output.
Ex: If the input of the program is:
StudentInfo.tsv
and the contents of StudentInfo.tsv are:
Barrett Edan 70 45 59 Bradshaw Reagan 96 97 88 Charlton Caius 73 94 80 Mayo Tyrese 88 61 36 Stern Brenda 90 86 45
the file report.txt should contain:
Barrett Edan 70 45 59 F Bradshaw Reagan 96 97 88 A Charlton Caius 73 94 80 B Mayo Tyrese 88 61 36 D Stern Brenda 90 86 45 C Averages: Midterm1 83.40, Midterm2 76.60, Final 61.60.
import java.util.Scanner;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.PrintWriter;
import java.io.IOException;
public class LabProgram {
public static void main(String[] args) throws IOException {
Scanner scnr = new Scanner(System.in);
/* TODO: Declare any necessary variables here. */
/* TODO: Read a file name from the user and read the tsv file here. */
/* TODO: Compute student grades and exam averages, then output results to a text file here. */
}
}

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