public class Account {
    private static double rate; 		//klassvariabel
    private static int currentNr = 0; 	        //klassvariabel
    private double balance;			//instansvariabel
    private String owner;			//instansvariabel
    private int number;				//instansvariabel

    public Account(String owner) {			
        this.owner = owner;
        currentNr = currentNr + 1;
        number = currentNr;
    } //konstruktor

    public static void setRate(double newRate) {
        rate = newRate;
    } //setRate

    public static double getRate() {
        return rate;
    } //getRate

    public double getBalance() {
        return balance;
    } //getBalance

    public int getNumber() {
        return number;
    } //getNumber

    public String getOwner() {
        return owner;
    } //getOwner

    public void transaction(double amount) {
        if (amount < 0 && balance + amount < 0)
            System.out.println("Not money enought!!");
        else
            balance = balance + amount;
    } //transaction

    public void addInterest(double interest) {
         balance = balance + balance*interest;
    }//addInterest

} //Account