Add a method
public void addInterest(double rate)
to the BankAccount class that adds interest at the given rate. For example, after the statements
BankAccount momsSavings = new BankAccount(1000);
momsSavings.addInterest(10); //
10% interest
the balance in momsSavings is $1,100. Also supply a BankAccountTester class that prints the actual and expected balance.

Complete the following files:

BankAccount.java

/** A bank account has a balance that can be changed by deposits and withdrawals. */ public class BankAccount { private double balance; /** Constructs a bank account with a zero balance */ public BankAccount() { balance = 0; } /** Constructs a bank account with a given balance @param initialBalance the initial balance */ public BankAccount(double initialBalance) { balance = initialBalance; } /** Deposits money into the bank account. @param amount the amount to deposit */ public void deposit(double amount) { double newBalance = balance + amount; balance = newBalance; } /** Withdraws money from the bank account. @param amount the amount to withdraw */ public void withdraw(double amount) { double newBalance = balance - amount; balance = newBalance; } /** Gets the current balance of the bank account. @return the current balance */ public double getBalance() { return balance; } /** . . . */ public void addInterest(double rate) { . . . } }

BankAccountTester.java

/** Tests the bank account class with interest. */ public class BankAccountTester { public static void main(String[] args) { BankAccount momsSavings = new BankAccount(1000); momsSavings.addInterest(10); System.out.print("Balance: "); System.out.println(. . .); System.out.println("Expected: . . ."); } }

BankAccountTester2.java