[英]the method in type not applicable for the arguments
我收到此错误消息:
发现2个错误:
错误:PayCalculator 类型中的方法determineTaxRate(double) 不适用于参数()
错误:PayCalculator 类型中的方法 calculateNetPay(double, double) 不适用于参数 ()
你能告诉我该怎么做才能解决这个问题吗?
public class PayCalculator
{
private double hourlyRate;
private double hoursWorked;
/**
* Two parameter constructor
* Add hourlyRate and hoursWorked
* @param the hourly rate
* @param the hours worked
*/
public PayCalculator(double aHourlyRate, double aHoursWorked)
{
hourlyRate = aHourlyRate;
hoursWorked = aHoursWorked;
}
/**
* sets the hourly rate
* @return hourlyRate
*/
public void setHourlyRate(double aHourlyRate)
{
hourlyRate = aHourlyRate;
}
/**
* gets the hourly rate
* @param hourlyRate
*/
public double getHourlyRate()
{
return hourlyRate;
}
/**
* sets the hours worked
* @return hoursWorked
*/
public void setHoursWorked(double aHoursWorked)
{
hoursWorked = aHoursWorked;
}
/**
* gets the hours worked
* @param hours worked
*/
public double getHoursWorked()
{
return hoursWorked;
}
public boolean workedOvertime()
{
if (hoursWorked > 40)
{
return true;
}
else
{
return false;
}
}
public double numHoursOvertime()
{
if (hoursWorked > 40)
{
return hoursWorked - 40;
}
else
{
return 0;
}
}
public double calculateGrossPay()
{
if (hourlyRate <= 10.25)
{
if (hourlyRate <= 40)
return hourlyRate * hoursWorked;
}
else
{
double grossPay = ((40 * hourlyRate) + ((hourlyRate * 2) * hoursWorked - 40));
return grossPay;
}
if (hoursWorked <= 60)
{
return hourlyRate * hoursWorked;
}
else
{
return 60 * hourlyRate;
}
}
public double determineTaxRate(double grossPay)
{
if (grossPay >= 800)
{
double tax = 0;
tax = grossPay * 0.37;
return tax;
}
else if ( grossPay >= 400)
{
double tax = 0;
tax = grossPay * 0.22;
return tax;
}
else
{
double tax = 0;
tax = grossPay * 0.12;
return tax;
}
}
public double calculateNetPay(double grossPay, double tax)
{
double calculateNetPay = grossPay - tax;
return calculateNetPay;
}
public void printData()
{
System.out.println("Hours Worked: " + hoursWorked);
System.out.println("Hourly rate: " + hourlyRate);
System.out.println("Number of hours of overtime worked: " + numHoursOvertime());
System.out.println("Worked overtime? " + workedOvertime());
System.out.println("Gross pay: " + calculateGrossPay());
System.out.println("Tax Rate: " + determineTaxRate());
System.out.println("Net Pay: " + calculateNetPay());
}
}
你在打电话
determineTaxRate()
但是您的方法定义为:
public double determineTaxRate(double grossPay)
{
与您的其他错误相同。 您需要将double
传递给该方法。 比如这个:
determineTaxRate(calculateGrossPay())
您尚未为从printData()
方法调用的方法指定参数,例如:
System.out.println("Net Pay: " + calculateNetPay());
您正在使用 0 个参数调用calculateNetPay()
,在您指定的方法定义中,它需要 2 个双参数。
public double calculateNetPay(double grossPay, double tax) { ... }
这同样适用于您遇到的其他错误。
你的方法用一个参数定义。但你没有传递任何参数。
对于calculateNetPay(),您也在做同样的事情。
你已经像这样声明了你的方法:
public double determineTaxRate(double grossPay)
然后像这样调用它:
determineTaxRate()
显然,您在调用该方法时错过了一个参数
通过确定税收率(someDoubleVar)解决这个问题
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