Java program to calculate and display the student mark result

 import java.util.Scanner;

public class Main

{

    int roll, sub1, sub2, sub3, total, avg;

    String name;

    char grade;

    Result()

    {

        name="";

        roll=0;

        sub1=0;

        sub2=0;

        sub3=0;

    }

    Result(int rno1, String name1, int sub11, int sub21, int sub31)

    {

        roll=rno1;

        name=name1;

        sub1=sub11;

        sub2=sub21;

        sub3=sub31;

    }

    public void grade()

    {

        total = sub1+sub2+sub3;

        avg = total/3;

        if(avg>=90&&avg<=100)

            grade = 'A';

        else if(avg>=80&&avg<90)

            grade = 'B';

        else if(avg>=70&&avg<80)

            grade = 'C';

        else if(avg>=60&&avg<70)

            grade = 'D';

        else if(avg>=50&&avg<60)

            grade = 'E';

        else

            grade = 'F';

    }

    public void display()

    {

        System.out.println(" RESULT ");

        System.out.println("|____________________________________________________________________________|");

        System.out.println("|Roll no.\tName\t\tSub1\tSub2\tsub3\tTotal\tAverage\tGrade|");

        System.out.println("|____________________________________________________________________________|");

        System.out.println("|"+roll+"\t\t"+name+"\t"+sub1+"\t"+sub2+"\t"+sub3+"\t"+total+"\t"+avg+"\t"+grade+" |");

    }

    public void getData()

    {

        Scanner sc = new Scanner(System.in);

        System.out.println("Enter name: ");

        name=sc.next();

        System.out.println("Enter roll number: ");

        roll=sc.nextInt();

        System.out.println("Enter Sub1 marks: ");

        sub1=sc.nextInt();

        System.out.println("Enter Sub2 marks: ");

        sub2=sc.nextInt();

        System.out.println("Enter Sub3 marks: ");

        sub3=sc.nextInt();

    }

    public static void main(String[] args)

    {

        Result obj = new Result();

        obj.getData();

        obj.grade();

        obj.display();

    }

}