好吧,所以我不得不創建一個程序,這是一個停車票模擬器。我編譯它,大部分它的工作,除了這是一個類型不匹配的小笨拙的錯誤。這是一個很大的代碼,所以我就放棄了類錯誤是:Java類型不匹配?
KNW_PoliceOfficerClass
public class KNW_PoliceOfficer
{
private String name;
private int badge;
private static double ticket;
public KNW_PoliceOfficer()
{
}
public KNW_PoliceOfficer(String poName, int poBadge)
{
name = poName;
badge = poBadge;
}
public String getName()
{
return name;
}
public int getBadge()
{
return badge;
}
static KNW_ParkingTicket search(KNW_ParkedCar car, KNW_ParkingMeter meter)
{
int time = KNW_ParkedCar.getMinutes() - KNW_ParkingMeter.getMinPurchased();
if(KNW_ParkedCar.getMinutes() > KNW_ParkingMeter.getMinPurchased())
{
if(time <= 60)
{
ticket = 25;
}
else
{
ticket = 25 + (10 * (time/60));
}
return ticket;
}
}
KNW_ParkingTicketClass
public class KNW_ParkingTicket
{
private KNW_ParkedCar vehicle;
private KNW_PoliceOfficer copster;
private double fine;
private int minutes;
private double firstFine = 25;
private double moreFine = 10;
public KNW_ParkingTicket(KNW_ParkedCar car, KNW_PoliceOfficer cop, double guyFine, int mins)
{
vehicle = car;
copster = cop;
fine = guyFine;
minutes = mins;
}
public void getTotalFine()
{
int time = KNW_ParkedCar.getMinutes() - KNW_ParkingMeter.getMinPurchased();
if(time <= 60)
{
fine = firstFine;
}
else
{
fine = firstFine + moreFine * (time/60);
}
}
public double getFirstFine()
{
return firstFine;
}
public double getMoreFine()
{
return moreFine;
}
public KNW_ParkedCar getVehicle()
{
return vehicle;
}
public KNW_PoliceOfficer getCopster()
{
return copster;
}
public int getMinutes()
{
return minutes;
}
public double getFine()
{
return fine;
}
}
,這裏是什麼錯誤說:
File: C:\Users\Kyle Welch\KNW_PoliceOfficer.java [line: 46]
Error: Type mismatch: cannot convert from double to KNW_ParkingTicket
任何幫助,將不勝感激!
哪一行?請顯示完整的錯誤信息。 –
該代碼有很多錯誤,包括錯誤使用靜態,調用方法,就好像它們是靜態的,當它們應該是實例時....你根本沒有使用方法參數。也許是從頭開始寫的。 –
你在'KNW_PoliceOffice'中聲明'ticket'是一個'double',在你的'search'方法中你說你要返回一個'KNW_ParkingTicket',但實際上你返回的是'ticket',這是一個double。 – nbokmans