Design a solution that has following features:

• Generate bill on the basis of Item price and quantity i.e. Bill = price of item * quantity
• Calculates cash from notes of Rs 2000, Rs 500, Rs 100, Rs 50, and Rs 10.
• Match cash against bill and display “Clear” message if no balance was there otherwise print the amount needs to pay.

Develop two classes Bill and Cash, where Cash inherits Bill. Sample input and output are shown below:

Sample Input 1:

1000    //item_price
100      //qty
4        //notes of 2000
0        //notes of 500
0        //notes of 100
0        //notes of 50
10       //notes of 10

Sample Output 1:

Need to pay: 91900

Constraints: notes should be of Rs 2000, Rs 500, Rs 100, Rs 50, and Rs 10.

Formula Used: Bill = price of item * quantity

import java.util.Scanner;

// Class Bill
class Bill {
    public int itemPrice;
    public int qty;
}

// Class Cash inherits Bill
class Cash extends Bill {
    private int a, b, c, d, e;

    // Method to get cash input
    void get_cash() {
        Scanner sc = new Scanner(System.in);

        // Input for item price and quantity
        itemPrice = sc.nextInt();
        qty = sc.nextInt();

        // Input for notes of Rs 2000, Rs 500, Rs 100, Rs 50, Rs 10
        a = sc.nextInt(); // Rs 2000 notes
        b = sc.nextInt(); // Rs 500 notes
        c = sc.nextInt(); // Rs 100 notes
        d = sc.nextInt(); // Rs 50 notes
        e = sc.nextInt(); // Rs 10 notes

        sc.close();
    }

    // Method to display the result
    void display() {
        // Total cash provided
        int total = 2000 * a + 500 * b + 100 * c + 50 * d + 10 * e;
        // Calculate the bill
        int bill = itemPrice * qty;
        // Remaining amount to pay
        int pay = bill - total;

        // Output whether the bill is cleared or needs more payment
        if (total >= bill) {
            System.out.println("Clear");
        } else {
            System.out.println("Need to pay: " + pay);
        }
    }
}