Write a program in java that calculate percentage marks of the student if marks of 6 subjects are given(using else-if)

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Write a program that calculate percentage marks of the student if marks of 6 subjects are given(using else-if)

import java.util.Scanner;

class Percentage
{
int sub1;
int sub2;
int sub3;
int sub4;
int sub5;
int sub6;

String name;
String roll_no;

float per()
{
float ans = (sub1 + sub2 + sub3 + sub4 + sub5 + sub6)/6;
return ans;
}

void display()
{
float ans=per();
System.out.println("Student Name :" +name);
System.out.println("Student Roll_no :" +roll_no);
System.out.println("Student Percentage :" +ans+"%");

if(ans>85)
System.out.println("Congratulations...!!! You having 1st/Distinction class :");
else if(ans>75)
System.out.println("You having 2nd class :");
else if(ans>65)
System.out.println("You having pass class :");
else
System.out.println("Sorry...!!! You can not clear this examination :");

}

}

class PercentageDemo
{
public static void main(String arg[])
{
Percentage s1=new Percentage();
Scanner s=new Scanner(System.in);

System.out.println("Enter Marks of Subject-1 :");
s1.sub1=s.nextInt();
System.out.println("Enter Marks of Subject-2 :");
s1.sub2=s.nextInt();
System.out.println("Enter Marks of Subject-3 :");
s1.sub3=s.nextInt();
System.out.println("Enter Marks of Subject-4 :");
s1.sub4=s.nextInt();
System.out.println("Enter Marks of Subject-5 :");
s1.sub5=s.nextInt();
System.out.println("Enter Marks of Subject-6 :");
s1.sub6=s.nextInt();

System.out.println("Enter Your name :");
s1.name=s.next();

System.out.println("Enter Your Roll_number :");
s1.roll_no=s.next();

s1.display();
}

}

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