Student Grade Calculation using Java

This tutorial will teach how to make a Student Grade Calculation in Java. Input the studentname and avg marks to calcuate the grade

if the average is > 85 – A

if the average is > 75 – B

if the average is > 65 – C

if the average is > 55 – S

if the average is < 45 – F

Paste the inside the Calc Button

        double maths,science,engish,tot,avg;
        String grade;
        
        maths = Integer.parseInt(txtMaths.getText());
        science = Integer.parseInt(txtSci.getText());
        engish = Integer.parseInt(txtEng.getText());
        
        
        
        tot = maths + science + engish;
        
        
        avg = tot/3;
        
        
        if(avg >= 85)
        {
            
            grade = "A";
        }
        else if(avg >= 75)
        {
            
            grade = "B";
        }
        else if(avg >= 65)
        {
            
            grade = "C";
        }
        else if(avg >= 45)
        {
            
            grade = "S";
        }
        else
        {
             grade = "F";
        }
        
        lbltot.setText(String.valueOf(tot));
        lblAvg.setText(String.valueOf(avg));
        
        lblGrade.setText(grade);