Define a class with the following specifications:

Class name: Bank

Member variables:
double p — stores the principal amount
double n — stores the time period in years
double r — stores the rate of interest
double a — stores the amount

Member methods:
void accept () — input values for p and n using Scanner class methods only.
void calculate () — calculate the amount based on the following conditions:

$a = p\Big(1+\dfrac{r}{100}\Big)^n$

void display () — display the details in the given format.

Principal    Time    Rate    Amount

XXX            XXX     XXX     XXX

Write the main method to create an object and call the above methods.

Design a class name ShowRoom with the following description:

Instance variables / Data members:
String name — To store the name of the customer
long mobno — To store the mobile number of the customer
double cost — To store the cost of the items purchased
double dis — To store the discount amount
double amount — To store the amount to be paid after discount

Member methods:
ShowRoom() — default constructor to initialize data members
void input() — To input customer name, mobile number, cost
void calculate() — To calculate discount on the cost of purchased items, based on following criteria

void display() — To display customer name, mobile number, amount to be paid after discount.

Write a main method to create an object of the class and call the above member methods.

DTDC a courier company charges for the courier based on the weight of the parcel. Define a class with the following specifications:

Class name: courier

Member variables:

name – name of the customer

weight – weight of the parcel in kilograms

address – address of the recipient

bill – amount to be paid

type – 'D'- domestic, 'I'- international

Member methods:

void accept ( ) — to accept the details using the methods of the Scanner class only.

void calculate ( ) — to calculate the bill as per the following criteria:

An additional amount of Rs.1500 is charged if the type of the courier is I (International)

void print ( ) — To print the details

void main ( ) — to create an object of the class and invoke the methods