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pritamkumar
Write a program to display grade message according to the marks
4 Answer(s)      2 years and 2 months ago
Posted in : Java Interview Questions


pls give d answer how to Write a program to display grade message according to the marks


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July 5, 2012 at 11:27 PM


Write a program to display grade message according to the marks..........



July 6, 2012 at 2:57 PM


Here is a code that accepts the number of students and their marks and display the grade according to student's marks.

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class StudentGrade {
     double totalMarks;
     String grade;

    public void setTotalMarks(double totalMarks) {
        this.totalMarks = totalMarks;
        }

    public double getTotalMarks() {
        return totalMarks;
    }

    public void setGrade(String grade) {
        this.grade = grade;
        }

    public String getGrade(){
        return grade;
    }

    public static void main(String[] args){
        JLabel lab=new JLabel("Enter number of students in class: ");
        final JTextField text=new JTextField(20);

        JButton b=new JButton("Find");
        lab.setBounds(10,10,150,20);
        text.setBounds(180,10,100,20);
        b.setBounds(180,40,100,20);

        JFrame f=new JFrame();
        f.setLayout(null);
        f.add(lab);
        f.add(text);
        f.add(b);
        f.setSize(300,100);
        f.setVisible(true);
        b.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){

        int num = Integer.parseInt(text.getText());
        StudentGrade data[] = new StudentGrade[num];
        for(int a = 0; a < data.length; a++) {
           String input=JOptionPane.showInputDialog(null,"Enter student programming marks: ");

            double marks = Double.parseDouble(input);
            data[a] = new StudentGrade();
            data[a].setTotalMarks(marks);

            if (marks < 40){
                data[a].setGrade("E");
            }

            if (marks >= 40 && marks <= 44) {
                data[a].setGrade("D");
            }

            if (marks >= 45 && marks <= 49) {
                data[a].setGrade("D+");
            }

            if (marks >= 50 && marks <= 54) {
                data[a].setGrade("C-");
            }

            if (marks >= 55 && marks <= 59) {
                data[a].setGrade("C");
            }

            if (marks >= 60 && marks <= 64) {
                data[a].setGrade("C+");
            }

            if (marks >= 65 && marks <= 69) {
                data[a].setGrade("B-");
            }

            if (marks >= 70 && marks <= 74) {
                data[a].setGrade("B");
            }

            if (marks >= 75 && marks <= 79) {
                data[a].setGrade("B+");
            }

            if (marks >= 80 && marks <= 84) {
                data[a].setGrade("A");
            }

            if (marks >= 85 && marks <= 100)
                data[a].setGrade("A+");
        }

        int count1 = 0;
        int count2 = 0;
        int count3 = 0;
        int count4 = 0;
        int count5 = 0;
        int count6 = 0;
        int count7 = 0;
        int count8 = 0;
        int count9 = 0;
        int count10 = 0;
        int count11 = 0;


July 6, 2012 at 2:58 PM


continue..

for (int i = 0; i < num; i++) {
                StudentGrade show = data[i];
                String g = show.getGrade();
                if (g.equals("A+")) {
                    count1++;
                }
                if (g.equals("A")) {
                    count2++;
                }
                if (g.equals("B+")) {
                    count3++;
                }
                if (g.equals("B")) {
                    count4++;
                }
                if (g.equals("B-")){
                    count5++;
                }
                if (g.equals("C+")){
                    count6++;
                }
                if (g.equals("C")){
                    count7++;
                }
                if (g.equals("C-")){
                    count8++;
                }
                if (g.equals("D+")){
                    count9++;
                }
                if (g.equals("D")){
                    count10++;
                }
                if (g.equals("E")){
                    count11++;
                }

            }
            JOptionPane.showMessageDialog(null,"Number of student getting A+ and A grade: "
                    + (count1 + count2));
            JOptionPane.showMessageDialog(null,"Number of student getting B+ and B grade: "
                    + (count3 + count4));
            JOptionPane.showMessageDialog(null,"Number of student getting A and B+ grade: "
                    + (count2 + count3));
            JOptionPane.showMessageDialog(null,"Number of student getting B and B- grade: "
                    + (count4 + count5));
            JOptionPane.showMessageDialog(null,"Number of student getting B- and C+ grade: "
                    + (count5 + count6));
            JOptionPane.showMessageDialog(null,"Number of student getting C+ and C grade: "
                    + (count6 + count7));
            JOptionPane.showMessageDialog(null,"Number of student getting C and C- grade: "
                    + (count7 + count8));
            JOptionPane.showMessageDialog(null,"Number of student getting C- and D grade: "
                    + (count8 + count9));
            JOptionPane.showMessageDialog(null,"Number of student getting D and D- grade: "
                    + (count9 + count10));
            JOptionPane.showMessageDialog(null,"Number of student getting D- and E grade: "
                    + (count10 + count11));

                }
            });
        }
    }


July 6, 2012 at 2:59 PM


Here is a code that accepts the number of students and their marks and display the grade according to student's marks.

import java.util.*;

public class StudentMarks{

        double totalMarks;
        String grade;

        public void setTotalMarks(double totalMarks){
        this.totalMarks=totalMarks;
        }
        public double getTotalMarks(){
        return totalMarks;
        }
        public void setGrade(String grade){
        this.grade=grade;
        }
        public String getGrade(){
        return grade;
        }
        public static void main(String[]args){
                Scanner input=new Scanner(System.in);
                System.out.print("Enter number of students: ");
                int num=input.nextInt();
                StudentMarks data[]=new StudentMarks[num];
                for (int i=0; i<data.length; i++) {
                System.out.println("Enter marks");
                double marks=input.nextDouble();
                data[i] = new StudentMarks();
                data[i].setTotalMarks(marks);
                if(marks<40){
                    data[i].setGrade("E");
                }
                if(marks>=40&&marks<=44){
                    data[i].setGrade("D");
                }
                if(marks>=45&&marks<=49){
                    data[i].setGrade("D+");
                }
                if(marks>=50&&marks<=54){
                    data[i].setGrade("C-");
                }
                if(marks>=55&&marks<=59){
                    data[i].setGrade("C");
                }
                if(marks>=60&&marks<=64){
                    data[i].setGrade("C+");
                }
                if(marks>=65&&marks<=69){
                    data[i].setGrade("B-");
                }
                if(marks>=70&&marks<=74){
                    data[i].setGrade("B");
                }
                if(marks>=75&&marks<=79){
                    data[i].setGrade("B+");
                }
                if(marks>=80&&marks<=84){
                    data[i].setGrade("A");
                }
                if(marks>=85&&marks<=100)
                    data[i].setGrade("A+");
                }
                }
                int count1=0,count2=0,count3=0,count4=0;
                for(int i=0;i<num;i++){
                StudentMarks show = data[i];
                String g = show.getGrade();
                if(g.equals("A+")){
                    count1++;
                }
                if(g.equals("A")){
                    count2++;
                }
                if(g.equals("D")){
                    count3++;
                }
                if(g.equals("E")){
                    count4++;
                }
                }
                System.out.println("Number of student getting A and A+ grade: "+(count1+count2));
                System.out.println("Number of student getting D and E grade: "+(count3+count4));
            }
        }


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