Question

solve this JAVA problem in NETBEANS

Problem #12 in page 400 of your text (6th edition): SavingsAccount Class. Design a SavingsAccount class that stores a savings account's annual interest rate and balance. The class constructor should accept the amount of the savings account's starting balance. The class should also have methods for subtracting the amount of a withdrawal, adding the amount of a deposit, and adding the amount of monthly twelve. To add the monthly interest rate to the balance, multiply the monthly interest rate by the balance, and add the result to the balance. Test the class in a program that calculates the balance of a savings account at the end of a period of time. It should ask the user for the annual interest rate, the and the number of months that have passed since the account was established. A loop should then iterate once for every month, performing the following Ask the uer for the amount deposited into the account during the months the class method to add this amount to the account balance. a) b) Ask the user for the amount withdrawn from the account during the months. c) fter the last iteration, the program should display the ending balance, the total amount Use the class method to subtract this amount from the account balance. Use the class method to calculate the monthly interest. of deposits, the total amount of withdrawals, and the total interest earned

Answer 1

Following is the answer:

SavingsAccount.java

import java.util.Scanner;

public class SavingsAccount {
    Scanner sc = new Scanner(System.in);
    private double annualRate;
    private double balance;
    private int months;
    private double totalWithdraw;
    private double totalDeposite;
    private double totalInterest;

    public double getBalance() {
        return balance;
    }

    SavingsAccount(int months, double balance, double annualRate){
        this.months = months;
        this.balance = balance;
        this.annualRate = annualRate;

    }

    public double getAnnualRate() {
        return annualRate;
    }

    public void setAnnualRate(double annualRate) {
        this.annualRate = annualRate;
    }

    public int getMonths() {
        return months;
    }

    public void setMonths(int months) {
        this.months = months;
    }

    public void withdraw(double amount){
        if(amount > balance || amount < 0)
        {
            System.out.println("Insufficient amount! Please enter again: ");
            amount = sc.nextDouble();
            balance -= amount;
            totalWithdraw += amount;
        }else {
            balance -= amount;
            totalWithdraw += amount;
        }
    }

    public void deposite(double amount){
        if(amount < 0)
        {
            System.out.println("Insufficient amount! Please enter again: ");
            amount = sc.nextDouble();
            balance += amount;
            totalDeposite += amount;
        }else {
            balance += amount;
            totalDeposite += amount;
        }
    }

    public void calculateInterest(){
        double interest = annualRate / 12;
        double interestAmount = (balance * (interest/100));
        totalInterest += interestAmount;
        balance += interestAmount;
    }

    public void print(){
        System.out.println("Total Withdraw: " + totalWithdraw);
        System.out.println("Total Deposite: " + totalDeposite);
        System.out.println("Total Interest: " + totalInterest);

    }


}

main.java

import java.util.Scanner;

public class main {
    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        int months;
        double balance;
        double interest;

        System.out.println("How many months passed?");
        months = sc.nextInt();
        System.out.println("Starting balance: ");
        balance = sc.nextDouble();
        System.out.println("Annual Interest Rate: ");
        interest = sc.nextDouble();

        SavingsAccount account = new SavingsAccount(months, balance, interest);

        for(int i = 1 ; i <= months; i++){
            System.out.println("Enter Deposite amount for month " + i + ":");
            double amount = sc.nextDouble();
            System.out.println("Enter Withdraw amount for month " + i + ":");
            double withdraw = sc.nextDouble();
            account.deposite(amount);
            account.withdraw(withdraw);
            account.calculateInterest();
            System.out.println("Balance for month " + i + " : " + account.getBalance());
        }

        account.print();

    }
}

Output:

How many months passed? 3 Starting balance: 30000 Annual Interest Rate: 12 Enter Deposite amount for month 1: 3000 Enter Withdraw amount for month 1 1000 Balance for month 1: 32320.0 Enter Deposite amount for month 2: 2300 Enter Withdraw amount for month 2 Balance for month 2: 34966.2 Enter Deposite amount for month 3: 1300 Enter Withdraw amount for month 3 300 Balance for month 3 36325.861999999994 Total Withdraw: 1300.0 Total Deposite: 6600 . Total Interest: 1025.862