Java program to Perform Student Marksheet

//Java program to Perform Student Marksheet Using Multilevel Inheritance.

import java.util.*;

import java.io.*;

class student

{

 int r_no;

 DataInputStream s1=new DataInputStream(System.in);

 String dep=new String();

 String name=new String();

 Scanner s=new Scanner(System.in);

 void create()

 {

 try{

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

  r_no=s.nextInt();

  System.out.println("Enter the Name :");

  name=s1.readLine();

  System.out.println("Enter the Department :");

  dep=s1.readLine();

  }catch(IOException e){}

 }

 void disp1()

 {

  System.out.println("STUDENT MARKSHEET");

  System.out.println("------- ---------");

  System.out.println("Registe Number:"+r_no);

  System.out.println("Student Name  :"+name);

  System.out.println("Department    :"+dep);

 }

}

class mark extends student

{

 int em1,em2,em3,im1,im2,im3;

 Scanner s1=new Scanner(System.in);

 void getmark()

 {

  System.out.println("Enter The External Mark1 :");

  em1=s1.nextInt();

  System.out.println("Enter The External Mark2 :");

  em2=s1.nextInt();

  System.out.println("Enter The External Mark3 :");

  em3=s1.nextInt();

  System.out.println("Enter The Internal Mark1 :");

  im1=s1.nextInt();

  System.out.println("Enter The Internal Mark2 :");

  im2=s1.nextInt();

  System.out.println("Enter The Internal Mark3 :");

  im3=s1.nextInt();

 }

}

class result extends mark

{

 int tot1,tot2,tot3,avg,avg1;

 void process()

 {

  tot1=em1+im1;

  tot2=em2+im2;

  tot3=em3+im3;

  avg=em1+em2+em3/3;

  avg1=im1+im2+im3/3;

 }

 void disp3()

 {

  System.out.print("----------------------------------------");System.out.print("\n");

  System.out.print("Subject!Extern!intern!Total!Grade");System.out.print("\n");

  System.out.print("----------------------------------------");System.out.print("\n");

  System.out.print("Tamil  :  "+em1+"\t"+im1 +"\t"+tot1);System.out.print("\t");if(tot1>=80) System.out.print("A");else if(tot1>=60) System.out.print("B");else if(tot1>=40) System.out.print("C");else System.out.print("U");System.out.print("\n");

  System.out.print("English:  "+em2+"\t"+im2 +"\t"+tot2);System.out.print("\t");if(tot2>=80) System.out.print("A");else if(tot2>=60) System.out.print("B");else if(tot2>=40) System.out.print("C");else System.out.print("U");System.out.print("\n");

  System.out.print("Maths  :  "+em3+"\t"+im3 +"\t"+tot3);System.out.print("\t");if(tot3>=80) System.out.print("A");else if(tot3>=60) System.out.print("B");else if(tot3>=40) System.out.print("C");else System.out.print("U");System.out.print("\n");

  System.out.print("----------------------------------------");System.out.print("\n");

 }

}

class multilevel1

{

 public static void main(String args[])

 {

  result r=new result();

  r.create();

  r.getmark();

  r.process();

  r.disp1();

  r.disp3();

 }

}