Write a Java program to create a Package “SY” which has a class SYMarks (members – ComputerTotal, MathsTotal, and ElectronicsTotal). Create another package TY which has a class TYMarks (members – Theory, Practicals). Create n objects of Student class (having rollNumber, name, SYMarks and TYMarks). Add the marks of SY and TY computer subjects and calculate the Grade (‘A’ for >= 70, ‘B’ for >= 60 ‘C’ for >= 50 , Pass Class for > =40 else ‘FAIL’) and display the result of the student in proper format.

StudentMarks.java

import SY.*;

import TY.*;

import java.io.*;

class StudentInfo

{

     int rollno;

     String name,grade;

     public float gt,tyt,syt;

     public float per;

     public void get() throws IOException

     {

          System.out.println("Enter roll no and name of the student :");

          BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

          rollno=Integer.parseInt(br.readLine());

          name=br.readLine();

     }

}

public class StudentMarks

{

     public static  void main(String [] args) throws IOException

     {

         BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

         System.out.println("Enter the number of students :");

         int n=Integer.parseInt(br.readLine());

         SYMarks sy[]=new SYMarks[n];

         TYMarks ty[]=new TYMarks[n];

         StudentInfo(n);

         

         for (int i=0; i<n; i++)

         {

              si[i]=new StudentInfo();

              sy[i]=new SYMarks();

              ty[i]=new TYMarks();

             

              si[i].get();

              sy[i].get();

              ty[i].get();

             

              si[i].syt=sy[i].ct+sy[i].et+sy[i].mt;

              si[i].tyt=ty[i].pm+ty[i].tm;

              si[i].gt=si[i].syt+si[i].tyt;

              si[i].per=(si[i].gt/1200)*100;

              if (si[i].per>=70)

                 si[i].grade="A";

              else if (si[i].per>=60)

                 si[i].grade="B";  

              else if (si[i].per>=50)

                 si[i].grade="C";

              else if (si[i].per>=40)

                 si[i].grade="Pass";

              else si[i].grade="Fail";

         }

         

         System.out.println("RollNo\t Name\t SyTotal\t Tytotal\t GrandeTotal\t Percentage\t Grade");

         for (int i=0; i<n; i++)

         {

             System.out.println(si[i].rollno + "\t" + si[i].name + "\t" + si[i].syt + "\t" + si[i].tyt + "\t" + si[i].gt + "\t" + si[i].per + "\t" + si[i].grade);

         }

     }

}

SyMarks.java

//SyMarks.java

package SY;

import java.io.BufferedReader;

import java.io.*;

public class SyMarks

{

     public int ct,mt,et;

     public void get() throws IOException

     {

          System.out.println("Enter marks of students for computer,maths and electronics subject out of 200");

          BufferedReader br = new BufferedReader(new InputSystemReader(System.in));

          ct=Integer.parseInt(br.readLine());

          mt=Integer.parseInt(br.readLine());

          et=Integer.parseInt(br.readLine());

     }

}

TyMarks.java

//TyMarks.java

package TY;

import java.io.BufferedReader;

import java.io.*;

public class TyMarks

{

      public int tm,pm;

      public void get() throws IOException

      {

          System.out.println("Enter marks of the theory out of 400 and practicals out of 200");

          BufferedReader br = new BufferedReader(new InputSystemReader(System.in));

          tm=Integer.parseInt(br.readLine());

          pm=Integer.parseInt(br.readLine());

      }

}