studentDetails.java

public class studentDetails {
    public static void main(String[] args) {
       System.out.println();
        
    }
}

class student{
    String id_no;
    int no_of_subject;
    String subject_name [] = {"MATHS", "C"  , "PHYSICS" , "DF" , "IC" , "ES"};
    int subject_credits [] = {6,6,5,5,2,2};
    String gread_obtain [] = {"A+" , "A" , "A+" , "B+" , "C" , "B"};
    double spi;

    void calculate_spi(){
        int totalcredit=0;
        for(int i = 0; i < 6; i++){
            switch(gread_obtain[i]){
                case("A+"): {
                    totalcredit += 10 * subject_credits[i];
                    break;
                }
                case("A"): {
                    totalcredit += 9 * subject_credits[i];
                    break;
                }
                case("B+"): {
                    totalcredit += 8 * subject_credits[i];
                    break;
                }
                case("B"): {
                    totalcredit += 7 * subject_credits[i];
                    break;
                }
                case("C+"): {
                    totalcredit += 6 * subject_credits[i];
                    break;
                }
                case("C"): {
                    totalcredit += 5 * subject_credits[i];
                    break;
                }
            }

        }
        double totalspi = totalcredit / 26;
        System.out.println(totalspi); 
    }
}