无法将“ retailPrice”解析为变量

Question

我一直收到错误消息"retailPrice cannot be resolved to a variable"。我也在其他几条线上也得到了，但让我们从这里开始。

import java.text.DecimalFormat;
class Billing

    {
      public static void main(String[] args)
      {
        computeBill(19.99);
        computeBill(19.99, 3);
        computeBill(19.99, 3, .20);
        computeBill(19.99, 3, .20, .10);
      }
      public static void computeBill(double book)
      {
        DecimalFormat f = new DecimalFormat("0.00");
        double retialPrice = (book * .085) + book;
        String total = (f.format(retailPrice));
        System.out.println("The photo book after tax is $" + total);
                           }

Answer 1

您拼写了变量名。看到线：

    double retialPrice = (book * .085) + book;

您声明它的拼写错误为retialPrice，然后在下一行中引用它正确地拼写为retailPrice。