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Calculator.java
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61 lines (46 loc) · 1.78 KB
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import java.util.*;
public class Calculator {
public static final Scanner scanner = new Scanner(System.in);
String productNames;
double sumMoney;
Calculator(String productNames, double sumMoney){
this.productNames = productNames;
this.sumMoney = sumMoney;
}
void addProduct(){
System.out.println("Введите название нового товара ");
String nameOfProduct = scanner.next();
System.out.println("Введите цену товара");
double priceOfProduct = checkInputPrice();
System.out.println("\nТовар успешно добавлен! \n");
Product prod = new Product(nameOfProduct, priceOfProduct);
productNames += nameOfProduct + "\n";
sumMoney += priceOfProduct;
}
//Проверка ввода корректной цены
public static double checkInputPrice(){
double userInputDouble;
while (true) {
String userInput = scanner.next();
if (isDouble(userInput)) {
userInputDouble = Double.parseDouble(userInput);
if (userInputDouble > 0)
break;
else
System.out.println("Введите корректную цену товара больше нуля!");
} else
System.out.println("Введите корректную цену товара!");
}
return userInputDouble;
}
//Функция проверки на ввод дробного числа
public static boolean isDouble(String x) throws NumberFormatException
{
try {
Double.parseDouble(x);
return true;
} catch(Exception e) {
return false;
}
}
}