Ok guys I'm almost done with my GPA program but I hit a snag. everything works fine but when I insert a letter grade the program doesn't read what number it corresponds to and sets double number to zero. Can some please let me know what I'm doing wrong.
import java.util.Scanner;
public class StudentGPA {
public static void main (String args[]){
//User inputs the number of classes he/she has
Scanner input = new Scanner (System.in);
System.out.println("Please enter your number of classes");
int classes;
classes = input.nextInt();
String Grade = "";
int totalHours = 0;
int totalHoursEarned = 0;
int hours;
double gpa;
double number=0;
//String of if and else statements that set the number to the appropriate GPA
if(Grade == "A")
number = 4.0;
else if(Grade == "A-")
number = 3.67;
else if(Grade == "B+")
number = 3.33;
else if(Grade == "B")
number = 3.0;
else if(Grade == "B-")
number = 2.67;
else if(Grade == "C+")
number = 2.33;
else if(Grade == "C")
number = 2.0;
else if(Grade == "C-")
number = 1.67;
else if(Grade == "D+")
number = 1.33;
else if(Grade == "D")
number = 1.0;
else if(Grade == "D-")
number = 0.67;
else if(Grade == "F")
number = 0;
//Loop that ends once the student has put information in on all his classes
for(int count = 0; count < classes; count++)
{
//Reads the number of hours each class was
Scanner input2 = new Scanner (System.in);
System.out.println("Please enter the number of hours this course was");
hours = input2.nextInt();
//reads the letter grade using the String Grade prompt
Scanner input3 = new Scanner(System.in);
System.out.println("Please enter your grade for this class");
Grade = input3.next();
//algorithm for finding the GPA
totalHours += hours;
totalHoursEarned += (hours * number);
}
//for loop ends
//GPA is calculated for all the students classes
gpa = totalHoursEarned / totalHours;
//GPA is printed to the screen
System.out.println(gpa);
}
}