public class LyyraCard {

    private double balance;

    public LyyraCard(double balance) {
        this.balance = balance;
    }

    public double balance() {
        return this.balance;
    }

    public void loadMoney(double amount) {
        this.balance += amount;
    }

    public boolean pay(double amount) {
       // method checks if the balance of the card is at least amount given as parameter
       // if not, methods returns false meaning that the card could not be used for the payment
       // if the balance is enough, the given amount is taken from the balance and true is returned
       if(balance() >= amount){
           this.balance -= amount;
           return true;
       }else{
         return false;
       }

    }
}