/**
 * A SavingsAccount is a BankAccount that credits interest to the account
 * if the balance is above some minimum.
 */
public class SavingsAccount extends BankAccount {
    // instance variables
    private double interestRate;    // interest rate; 0.05 means 5%
    private double minBalance;      // minimum account balance to receive interest

    /**
     * Construct a new SavingsAccount with the given name, number,
     * initial balance, interest rate and minimum balance.  pre: name!=null
     */
    public SavingsAccount(String name, int number, double initialBalance,
                          double interestRate, double minBalance) {
        super(name, number, initialBalance);
        this.interestRate = interestRate;
        this.minBalance = minBalance;
    }

    /**
     * Credit interest if current account balance is sufficient
     */
    public void creditInterest() {
        if (this.getBalance() >= this.minBalance) {
            this.deposit(this.getBalance() * interestRate);
        }
    }

    /** return this SavingsAccount's current interest rate */
    public double getInterest() {
        return this.interestRate;
    }

    /** set the interest rate for this SavingsAccount */
    public void setInterestRate(double newRate) {
        this.interestRate = newRate;
    }

    /** Return a string representation of this SavingsAccount */
    public String toString() {
        return "SavingsAccount[" + this.getName() + ", " + this.getNumber() + ", " +
                this.getBalance() + "]";
    }



}