/**
 * This is a simplified version of the BankAccount class that we 
 * designed together in-class.
 * 
 * This class has only 4 instance variables:
 *  - balance, 
 *  - interest rate, 
 *  - name, 
 *  - account number
 */
public class SimpleBankAccount{

    // Instance variables    
    private double balance;
    private double interestRate;
    private String ownerName;
    private String accountNumber;
            
    /**
     * Constructs a new bank account
     */
    public SimpleBankAccount(String name, double initialBalance, String aNumber){           
        balance = initialBalance;        
        interestRate = 0.03;
        ownerName = name;
        accountNumber = aNumber;
    }
        
     
    /**
     * Adds interest to the account
     */
    public double addInterest(){
        double interest = balance * interestRate;
        balance = balance + interest;
        return balance;
    }    
    
    /**
     * Deposits money into the account
     */
    public double deposit(double amount){
       balance = balance + amount;
       return balance;        
    }    
    
    /**
     * Withdraws money from the account
     */
    public double withdrawal(double amount){
        balance = balance - amount;
        return balance;
    }
 
    /**
     * Returns the current balance
     */
    public double getBalance(){
        return balance;
    }
    
    /**
     * Returns the name of the account owner
     */
    public String getOwnerName(){
        return ownerName;
    }
    
    /**
     * Returns the account number
     */
    public String getAccountNumber(){
        return accountNumber;
    }  
    
    /**
     * Returns a String representing the state of the object
     */
    public String toString(){
        return "[" + ownerName + ", " + accountNumber + ", " + balance + "]";
    }
}