Answer to Question #238502 in Java | JSP | JSF for Mikz

Question

You have to design your own Java console application about any valid problem that your application must solve. Your solution can include solving a business problem, a new idea or even a game. Your application must make use of concepts such as arrays, loops, inheritance, constructors and information hiding. Output must be shown in the form of a report using the console. In your solution, make use of as many concepts, and components dealt with in this course, but pay special attention to the following: Advanced arrays and Introduction to inheritance.

Answer 1

package student;


import java.util.Scanner;
public class Student {
 private String name; //Information hiding
 private int rollNumber;
 private int age;
 public Student(){
     
 }
 public Student(String n, int r, int a){
     name = n;
     rollNumber = r;
     age = a;
 }
 String getName(){
     return name;
 }
 
 int getRollNumber(){
     return rollNumber;
 }
 int getAge(){
     return age;
 }
  
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        System.out.println("Enter name of the student\n"); 
        String name = scan.next();
         System.out.println("Enter roll number of the student\n"); 
        int roll = scan.nextInt();
         System.out.println("Enter age of the student\n"); 
        int age = scan.nextInt();
        Test t = new Test(name, roll, age, 10);
        t.inputMarks();
        t.display();
        
    }
    
}
//Inheritance
class Test extends Student{
    Scanner scan = new Scanner(System.in);
    private int[] arr; //Advanced arrays
    private int total_marks;
    public Test(String n, int r, int a, int m){
        super(n, r, a);
        total_marks = 5;
        arr = new int [total_marks];
    }
    void inputMarks(){
       System.out.println("Enter 5 marks of the student\n"); 
       for(int i=0; i<total_marks; i++){
           System.out.printf("Mark %d\n", (i+1));
           int mark = scan.nextInt();
           arr[i] = mark;
       }
       
       
      
    }
    void display(){
        System.out.println("Name: \n" +getName()); 
        System.out.println("Roll Number: \n" +getRollNumber()); 
        System.out.println("Age: \n" +getAge()); 
        float sum = 0;
        for(int i=0; i<total_marks; i++){
        System.out.printf("Mark %d is: %d\n", (i+1), arr[i]);
        sum += arr[i];
    }
      System.out.printf("Total marks is:  %f\nAverage mark is %f", sum, sum /5); 
    }
}