Java Programming Language

Edit and modify from the given code

1. Perform the exact same logic, except . . .
2. The numeric ranges and corresponding letter grade will be stored in a file.
3. Need error checking for:
   1. Being able to open the text file.
   2. The data makes sense: 1 text line of data would be 100 = A.
4. Read in all of the numeric grades and letter grades and stored them into an array or arraylist.
5. Then do the same logic.
6. The handing of the invalid numeric value should display the same message.
7. The output for the grade letter should look the same.

----------------------------------------------------

//Given code

import java.util.*;

public class LetterGrades { public static void main(String[] args) {

//Get the user input Scanner sc = new Scanner(System.in);

//Array List ArrayList scores=new ArrayList(); ArrayList gradeLetters=new ArrayList(); String gradeLetter="";

//Loop while(true) { System.out.print("Enter your numeric grade (enter -1 to end and view the result): "); double grade = sc.nextDouble();

//End the program if user entered -1 if(grade == -1) { System.out.print("The program ended"); break; }

//validating the grade between 0 and 100 if(grade<0 || grade>100)//if user entered invalid input { while(true)//infinity loop to read input untill user enter valid input. { //Displaying error message. System.out.print("You entered inalid numeric grade."); System.out.print("Please enter valid numeric grade from 0-100: "); grade = sc.nextDouble(); //End the validating loop if user entered valid input. if(grade>=0 && grade<=100) { break; } } } scores.add(grade); //Convert numeric grade to letter grade if(grade>=93 && grade<=100) gradeLetter="A"; else if(grade>=90 && grade<93) gradeLetter="A-";

else if(grade>=87 && grade<90) gradeLetter="B+"; else if(grade>=83 && grade<87) gradeLetter="B"; else if(grade>=80 && grade<83) gradeLetter="B-";

else if(grade>=73 && grade<80) gradeLetter="C+"; else if(grade>=70 && grade<73) gradeLetter="C";

else if(grade>=60 && grade<70) gradeLetter="D";

else if(grade<60) gradeLetter="F"; gradeLetters.add(gradeLetter); }

for(int i=0;i

} } }