Write a BankAccountTester class whose main method constructs a bank account, deposits $1,000, withdraws $500, withdraws another $400, and then prints the remaining balance. Also print the expected result.

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 percent interest the balance in momsSavings is $1,100. Also supply a BankAccountTester class that prints the actual and expected balance