package designingclasses2;

/**
 * This class stores data about a bank account.
 */
public class BankAccount 
{
    // instance variables
    private double balance;
    private String owner;
    
    // class variable
    private static double interestRate = 5;
    
    /**
     * This constructor initializes the balance and owner fields to the passed values.
     * @param initialBalance Account's initial balance.
     * @param ownerName Account's owner name.
     */
    public BankAccount(double initialBalance, String ownerName)
    {
        balance = (initialBalance >= 0) ? initialBalance : 0;  
        
        this.owner = ownerName;    
    }
    
    
    /**
     * This constructor initializes the balance and owner fields to default values.
     */
    public BankAccount()
    {
        this.balance = 0;
        this.owner = "";         
    }
    
    /**
     * The getBalance method returns a BankAccount object's balance.
     * @return The value in the balance field.
     */
    public double getBalance()
    {
        return this.balance;
    }
    
    /**
     * The getOwner method returns a BankAccount object's owner.
     * @return The value in the owner field.
     */
    public String getOwner()
    {
        return this.owner;
    }
    
    /**
     * The getInterestRate method returns the class's interestRate field.
     * @return The value in the interestRate static field.
     */
    public static double getInterestRate()
    {
        return interestRate;
    }
    
    /**
     * The setBalance method stores a value in the balance field.
     * @param balance the value to store in balance
     */
    public void setBalance(double balance)
    {
        this.balance = (balance >= 0) ? balance : 0;
    }

    /**
     * The setOwner method stores a value in the owner field.
     * @param owner the value to store in owner
     */
    public void setOwner(String owner)
    {
        this.owner = owner;
    }
    
    /**
     * The setInterestRate method resets the value in the class's interestRate field.
     * @param newRate The new value to store in the interestRate static field.
     */
    public static void setInterestRate(double newRate)
    {
        interestRate = newRate;
    }
    
    /**
     * The deposit method adds the given amount to the account balance
     * @param amount amount to be added
     */
    public void deposit(double amount)
    {
        this.setBalance(this.balance + amount);
    }
    
    /**
     * The withdraw method subtracts the given amount from the account balance if amount is not 
     * greater than the balance.
     * @param amount amount to be withdrawn
     */
    public void withdraw(double amount)
    {
        if( amount <= this.balance )
            this.setBalance(this.balance - amount);   
    }
     
    /**
     * The addMonthlyInterest method adds interest to the account's current balance.
     */
    public void addMonthlyInterest()
    {
        double interestAmount = this.balance * interestRate / 100;
        this.setBalance(this.balance + interestAmount);
    }
   
}