Student Grade

package others.com;

import java.util.Scanner;
import javax.swing.JOptionPane;

public class JavaApp {

    public static void main(String[] args) {
        //Instance of StudentGrade class
        StudentGarde studentMaria = new StudentGarde();
        Scanner in = new Scanner(System.in);
        int idNum, sumScore=0, ctr=0;
        int[] score = new int[10];
        String studFName, studLName;

        idNum = Integer.parseInt(JOptionPane.showInputDialog("Enter ID#: "));
        studFName = JOptionPane.showInputDialog("Enter firstname: ");
        studLName = JOptionPane.showInputDialog("Enter lastname: ");
        System.out.println("Enter 5 score: ");
        for(int i=0; i<5; i++) {
            System.out.println("Enter score["+(i+1)+"]: ");
            score[i] = in.nextInt();
            ctr++;//to count the number of time it loop
            if(score[i] < 70 || score[i] > 100) {
                System.out.println("Input should be 70-100");
                System.out.println("Enter score["+ctr+"]: ");
                score[i] = in.nextInt();
            }
            sumScore+=score[i];
        }
        //pass to the setters
        studentMaria.setIdNumber(idNum);
        studentMaria.setFirstName(studFName);
        studentMaria.setLastName(studLName);
        studentMaria.setScore(sumScore);

        //getting value from other class
        int id = studentMaria.getIdNumber();
        String fname = studentMaria.getFirstName();
        String lname = studentMaria.getLastName();
        double gradetotal = studentMaria.computeGrade();

        //Display outputs
        System.out.println("\nId No: "+id);
        System.out.println("FirstName: "+fname);
        System.out.println("LastName: "+lname);
        System.out.println("Grade: "+gradetotal);
    }

}
class StudentGarde {
    //Declaration
    private int idNumber, score;
    private String firstName, lastName;
    private double grade;

    //Constructor
    public StudentGarde() {

    }

    public int getIdNumber() {
        return idNumber;
    }

    public void setIdNumber(int idNumber) {
        this.idNumber = idNumber;
    }

    public int getScore() {
        return score;
    }

    public void setScore(int score) {
        this.score = score;
    }

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    public double getGrade() {
        return grade;
    }

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

    public double computeGrade() {
        grade = score/5;

        return grade;
    }
}