Question

1- Write a code for a banking program.

a) In this question, first, you need to create a Customer class, this class should have:

• 2 private attributes: name (String) and balance (double)

• Parametrized constructor to initialize the attributes

• Methods:

i. public String toString() that gives back the name and balance

ii. public void addPercentage; this method will take a percentage value and

add it to the balance

b) Second, you will create a driver class and ask the user to enter 5 customers’ information

and then you will create an array of Customer objects.

c) Then you use this array used for various operations as shown in the output.

• Using the array of customer objects, you need to search for all customers who

have more than $100

• Using the array of customer objects, you need to get the average balance of the

balances in this array

• Using the array of customer objects, you need to get the customer with the

highest balance

• Using the array of customer objects, you need to show all accounts after a 5%

balance increase

Answer 1

Hello,

The code is given below as well as the screenshots of compiled and executed program.

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//Customer Class ----------------------------------

public class Customer {

private String name;

private double balance;

public Customer(String name, double balance ){

this.name = name;

this.balance = balance;

}

public Customer() {

// TODO Auto-generated constructor stub

}

public String toString(Customer objs[]){

String res = "";

for(int i = 0; i < objs.length; i++){

//Storing all the information in a string

res = res + objs[i].name +" \t " + Double.toString(objs[i].balance) + "\n";

}

return res;

}

public void addPercentage(Customer objs[], double percentValue){

for(int i = 0; i < objs.length; i++){

//Adding the percentage

objs[i].balance = objs[i].balance + (objs[i].balance*percentValue/100);

}

}

}

//Driver Class----------------------------------

import java.util.Scanner;

public class Driver {

public static void main(String args[]){

Scanner sc = new Scanner(System.in);

Customer cs = new Customer();

System.out.println("Enter the Customers Information:");

Customer customers[] = new Customer[5];

for(int i = 0; i < customers.length; i++){

String name = sc.next();

double balance = sc.nextDouble();

customers[i] = new Customer(name,balance);

}

// To fetch all the records

String result = cs.toString(customers);

String data[] = result.split("\n");

// To find all customers having balance more than 100

System.out.println("\nCustomers with balance more than $100");

System.out.println("Name \t Balance");

for(int i = 0; i < customers.length; i++){

String temp[] = data[i].split("\t");

if(Double.parseDouble(temp[1]) > 100){

System.out.println(data[i]);

}

}

//To find the average balance

double avg = 0;

for(int i = 0; i < customers.length; i++){

String temp[] = data[i].split("\t");

avg += Double.parseDouble(temp[1]);

}

avg = avg / customers.length;

System.out.println("\nThe average balance is = " + avg);

// To find the customer with highest balance

double max = Double.MIN_VALUE;

int maxIndex = -1;

for(int i = 0; i < customers.length; i++){

String temp[] = data[i].split("\t");

double bal = Double.parseDouble(temp[1]);

if(bal > max){

max = bal;

maxIndex = i;

}

}

System.out.println("\nThe user with Maximum balance is");

System.out.println("Name \t Balance");

System.out.println(data[maxIndex]);

//Increase balance with 5% to all users

cs.addPercentage(customers,5d);

result = cs.toString(customers);

System.out.println("\nBalance of all customers after adding 5% of balance");

System.out.println("\nName \t Balance");

System.out.println(result);

}

}

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Please give yours valuable feedback.

Thanks.