public string addMoney(DigitalWallet digitalWallet, int amount)
{
if (!this.commonValidation(digitalWallet, amount))
{
return("We can not do this transaction");
}
digitalWallet.setBalance(digitalWallet.getWalletBalance() + amount);
return(returnBalance(digitalWallet));
}
public string payMoney(DigitalWallet digitalWallet, int amount)
{
if (!this.commonValidation(digitalWallet, amount))
{
return("We can not do this transaction");
}
// Final balance after possible transaction
int finalBalance = 0;
finalBalance = digitalWallet.getWalletBalance() - amount;
if (finalBalance < 0)
{
return("Insufficient balance");
}
else
{
digitalWallet.setBalance(finalBalance);
}
return(returnBalance(digitalWallet));
}