S3P3

It is required to compute SPI (semester performance index) of n students of your college for their registered subjects in a semester. Declare a class called student having following data members: id_no , no_of_subjects_registered, subject_code , subject_credits, grade_obtained and spi.
- Define constructor and calculate_spi methods.
- Define main to instantiate an array for objects of class student to process data of n students to be given as command line arguments.

 class student  
 {  
      int id_no, no_of_subjects_registered, subject_credits;   
      float spi;  
      String subject_code,grade_obtained;  
      student(int i, int nsub, int sc, String code, String g)  
      {  
           id_no = i;  
           no_of_subjects_registered = nsub;  
           subject_credits = sc;  
           subject_code = code;  
           grade_obtained = g;  
      }  
      void calculate_spi()  
      {  
           int go=0;  
           switch(grade_obtained)  
           {  
                case "AA": go = 10; break;  
                case "AB": go = 9; break;  
                case "BB": go = 8; break;  
                case "BC": go = 7; break;  
                case "CC": go = 6; break;  
                case "CD": go = 5; break;                 
                case "DD": go = 4; break;  
                case "FF": go = 00; break;  
                default : System.out.println("\nInvalid Grade Value.."+grade_obtained); break;  
           }  
           int total = no_of_subjects_registered*subject_credits;  
           spi = (total*go)/total;  
           System.out.println("\nID Number: "+id_no+", SPI: "+spi);  
      }  
 }  
 class S3P3_spi  
 {  
      public static void main(String args[])  
      {  
           int n_student = 3;  
           student s_obj[] = new student[n_student];  
           s_obj[0] = new student(1, 4, 10, "27374", "AA");  
           s_obj[1] = new student(2, 4, 10, "27374", "CC");  
           s_obj[2] = new student(3, 4, 10, "27374", "BC");  
           for(int i=0; i<n_student; i++)  
           {  
                s_obj[i].calculate_spi();  
           }  
      }  
 }  

Output:

   
 E:\Java>javac S3P3_spi.java  
   
 E:\Java>java S3P3_spi  
   
 ID Number: 1, SPI: 10.0  
   
 ID Number: 2, SPI: 6.0  
   
 ID Number: 3, SPI: 7.0  
   
 E:\Java>