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Java OOPS Student Marks Calculation System

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In this tutorials will  teach you how to calculate student marks using OOP concepts. This is an important for developing a java projects.  there are many students who struggling with this area. so that I bring this article for all to clear the doubts..Input the studentname and marks to calculating the total,grade. the grade is awared as “Pass” when the average is more than 50.otherwise grade is fail.

First You have to Design the Form

After that you have to create the class  Cal.java

public class Cal 
{
    public int m1,m2,m3,tot;
    public double avg;
    public String grade;
    
    public int Add()
    {
        tot = m1 + m2 + m3;   
        return tot;
    }
    
    public double Avg()
    {
        avg = tot/3;   
        return avg;
    }
    
    public String Grade()
    {
        
        if(avg > 50)
        {
            grade = "Pass";
        }
        else
        {
            grade = "Fail";
        }
       
        return grade;
    }
}

Paste the Code inside the Add Button

Cal c = new Cal();
c.m1 = Integer.parseInt(txtNum1.getText());
c.m2 = Integer.parseInt(txtNum2.getText()); 
c.m3 = Integer.parseInt(txtNum3.getText()); 
      
txttot.setText(String.valueOf(c.Add()));      
txtavg.setText(String.valueOf(c.Avg()));
txtgrade.setText(String.valueOf(c.Grade()));

i have attached the video link below. which will do this tutorials step by step.

 

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