Java Program To Calculate Internal Marks of a Student Using Classes and Objects - Securing The Data Through Methods

//classes and objects - securing the data through methods  

package javaapplication7;

/**

 *

 * @author user

 */

import java.lang.*;

import java.io.*;

import java.util.*;

class StudentRec

{

int regNo;

private int test1Marks, test2Marks, quizMarks, assMarks, homeAssgnMarks, attPer =0; 

int attMarks = 0;

double weightedAverageTestMarks, totalMarks;

int settest1Marks(int t) 

{

       if (t>20) return 1;

       if (t<0) return 2;

       test1Marks = t;

return 0;

}

int settest2Marks(int t) 

{

       if (t>20) return 1;

       if (t<0) return 2;

       test2Marks = t;

return 0;

}

int setquizMarks(int q) 

{

       if (q>5) return 1;

       if (q<0) return 2;

       quizMarks = q;

return 0;

}

int setassMarks(int a) 

{

       if (a>5) return 1;

       if (a<0) return 2;

       assMarks = a;

return 0;

}

int sethomeAssgnMarks(int h) 

{

       if (h>5) return 1;

       if (h<0) return 2;

       homeAssgnMarks = h;

return 0;

}

int setattPer(int p) 

{

       if (p>100) return 1;

       if (p<0) return 2;

       attPer = p;

return 0;

}

double computeIM()

{

if (test1Marks>test2Marks)

weightedAverageTestMarks = (0.75*test1Marks)+(0.25*test2Marks);

else

weightedAverageTestMarks = (0.25*test1Marks)+(0.75*test2Marks);

totalMarks = attMarks+weightedAverageTestMarks+quizMarks+homeAssgnMarks+assMarks;

return totalMarks;

}

}

public class StudentRecDemo2 {

    /**

     * @param args the command line arguments

     */

    public static void main(String[] args) throws IOException{

        int num,ec;

double internalMarks;

StudentRec  record = new StudentRec();

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

System.out.print("enter student id ");

num = Integer.parseInt(br.readLine());

record.regNo = num;

while(true)

{

 System.out.println ("Enter test1Marks marks (0-20)");

num = Integer.parseInt(br.readLine());

//record.test1Marks = num;

//System.out.println("Direct accessing Successfull");

ec = record.settest1Marks(num);

if(ec ==0) break;

if(ec == 1)

System.out.println("Marks are too high");

if(ec ==2)

System.out.println(" Negitive Marks are not accepted");

System.out.println("Please enter Correct values");

}

while(true)

{

 System.out.println ("Enter test2Marks marks (0-20)");

num = Integer.parseInt(br.readLine());

//record.test1Marks = num;

//System.out.println("Direct accessing Successfull");

ec = record.settest2Marks(num);

if(ec ==0) break;

if(ec == 1)

System.out.println("Marks are too high");

if(ec ==2)

System.out.println(" Negitive Marks are not accepted");

System.out.println("Please enter Correct values");

}

while(true)

{

 System.out.println ("Enter quizMarks marks (0-5)");

num = Integer.parseInt(br.readLine());

//record.test1Marks = num;

//System.out.println("Direct accessing Successfull");

ec = record.setquizMarks(num);

if(ec ==0) break;

if(ec == 1)

System.out.println("Marks are too high");

if(ec ==2)

System.out.println(" Negitive Marks are not accepted");

System.out.println("Please enter Correct values");

}

while(true)

{

 System.out.println ("Enter assMarks marks (0-5)");

num = Integer.parseInt(br.readLine());

//record.test1Marks = num;

//System.out.println("Direct accessing Successfull");

ec = record.setassMarks(num);

if(ec ==0) break;

if(ec == 1)

System.out.println("Marks are too high");

if(ec ==2)

System.out.println(" Negitive Marks are not accepted");

System.out.println("Please enter Correct values");

}

while(true)

{

 System.out.println ("Enter homeAssgnMarks marks (0-5)");

num = Integer.parseInt(br.readLine());

//record.test1Marks = num;

//System.out.println("Direct accessing Successfull");

ec = record.sethomeAssgnMarks(num);

if(ec ==0) break;

if(ec == 1)

System.out.println("Marks are too high");

if(ec ==2)

System.out.println(" Negitive Marks are not accepted");

System.out.println("Please enter Correct values");

}

while(true)

{

 System.out.println ("Enter  attPercentage (0-100)");

num = Integer.parseInt(br.readLine());

//record.test1Marks = num;

//System.out.println("Direct accessing Successfull");

ec = record.setattPer(num);

if(ec ==0) break;

if(ec == 1)

System.out.println("Marks are too high");

if(ec ==2)

System.out.println(" Negitive Marks are not accepted");

System.out.println("Please enter Correct values");

}

if (num >= 95)

        record.attMarks = 5;

else if (num >= 90)

       record.attMarks = 4;

else if (num >=85)

        record.attMarks = 3;

else if (num >= 80)

        record.attMarks = 2;

else if (num >= 75)

        record.attMarks = 1;

else if (num <75 && num>=65)

{

record.attMarks = 0;  

System.out.println(" Student is eligible for Exam by paying  Condonation Fee and producing Medical Certificate");

}

else

{

        record.attMarks = 0;

        System.out.println("Student is detained");

}

internalMarks = record.computeIM();

System.out.println(" The Internal Marks of the Student = " +internalMarks);

        // TODO code application logic here

    }

   

}