SavingsAccount

[xgiovio]

main

import bank.SavingsAccount;
public class test {

    public static void main (String [] input_data){

        SavingsAccount conto = new SavingsAccount(1000,3.45);
        System.out.println("saldo = " +  conto.get_balance());
            conto.deposit(23);
        System.out.println("saldo con deposito di 23 = " + conto.get_balance());
            conto.withdraw(40);
        System.out.println("saldo con withdarw di 40 = " + conto.get_balance());
            conto.addInterest();
        System.out.println("saldo con interesse = " + conto.get_balance());


    }
} 

SavingsAccount class

package bank;
public class SavingsAccount {


    ////////////// constructor
    public SavingsAccount (double in_saldo, double in_interest){
           saldo = in_saldo;
           interest = in_interest;

    }

     public void deposit ( double in_deposit){
          saldo+=in_deposit;

     }
     public void withdraw ( double in_withdraw ){
           saldo-=in_withdraw;

     }
     public double get_balance ( ){
            return saldo;

     }

    /////////////   aggiungi interesse trimestrale al conto
     public void addInterest () {
         saldo += (((saldo / 100) * interest)/4);

     }


private double saldo;
private double interest;

}