Question

Write a java client that creates a symbol table mapping letter grades to numerical scores, as in the table below, then reads from standard input a list of letter grades and computes and prints the GPA (the average of the numbers corresponding to the grades) USING SYMBOL TABLES. IN JAVA PLZ

A+	A	A-	B+	B	B-	C+	C	C-	D+	D	D	F
4.35	4.00	3.65	3.35	3.00	2.65	2.35	2.00	1.65	1.35	1	.65	0.00

Answer 1

import java.util.Scanner;

public class AverageGrade {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

String grade = "";

int count = 0;

double sum = 0;

while (true) {

System.out.println("Enter grade (Q to quit)");

grade = sc.nextLine();

if (grade.equalsIgnoreCase("Q"))

break;

count++;

sum += getValue(grade);

}

System.out.printf("Average GPA is %.2f: ",(sum/count));

}

private static double getValue(String line) {

line=line.toUpperCase();

double gpa = 0;

if (line.equals("A+"))

gpa = 4.35;

if (line.equals("A"))

gpa = 4;

if (line.equals("A-"))

gpa = 3.65;

if (line.equals("B+"))

gpa = 3.35;

if (line.equals("B"))

gpa = 3;

if (line.equals("B-"))

gpa = 2.65;

if (line.equals("C+"))

gpa = 2.35;

if (line.equals("C"))

gpa = 2;

if (line.equals("C-"))

gpa = 1.65;

if (line.equals("D+"))

gpa = 1.35;

if (line.equals("D"))

gpa = 1;

if (line.equals("D-"))

gpa = .65;

if (line.equals("F"))

gpa = 0;

return gpa;

}

}