在Java中携带这些变量有什么不对？[副本]

Question

public class TaxFormTest {

    public static void main(String[] args)
    {
        TaxForm michiganStateTaxForm = new TaxForm();

        michiganStateTaxForm.setTaxRate(.07);
        System.out.println("Tax Form Rate: " + michiganStateTaxForm.getTaxRate());

        michiganStateTaxForm.setTaxRate(.09);
        System.out.println("Tax Form Rate: " + michiganStateTaxForm.getTaxRate());
    }
}

public class TaxForm{

    int taxRate;
    int rate;
    private double taxrate;

    public void setTaxRate()
    {
        taxRate = rate;
    }

    public double getTaxRate()
    {
        return taxrate;
    }

}

Answer 1

您要对setter进行呼叫：

 michiganStateTaxForm.setTaxRate(.07);

这个setter使用一个double并在对象上设置它。

因此，您的setter应该如下所示：

public void setTaxRate(double rate)
    {
        taxRate = rate;
    }