Student Advanced Grade calculation using Java

this tutorial on java we are going to teach the advanced student grading system using following condition

Avg > 80 -> Distinction

Avg > 70 -> Credit

Avg > 60 -> Simple Pass

Other wise Fail

public class JavaEx {

    public static void main(String args[])
    {
        String name ="John";
        int maths = 100;
        int science = 78;
        int english = 68;

        int tot = maths + science + english;
        System.out.println(tot);

        int avg = tot/3;
        System.out.println(avg);


        if(avg > 80)
        {
            System.out.println("Distinction");
        }
        else if(avg > 70)
        {
            System.out.println("Credit");
        }
        else if(avg > 60)
        {
            System.out.println("Credit");
        }
        else if(avg > 40)
        {
            System.out.println("Simple Pass");
        }
        else
        {
            System.out.println("Fail");
        }

    }

}