我不知道为什么这不起作用，我已经尝试了一切。我觉得我非常接近做好这件事，但就是无法将最后几件事放在一起。我也意识到这不是很好的编码，但我是这方面的初学者，并且希望能得到任何帮助。
public void actionPerformed(ActionEvent event) {
Object source = event.getSource();
Object flight = AirlinesBox.getSelectedItem();
Object DepartureLocation = LocationsBox.getSelectedItem();
Object Destination = DestinationBox.getSelectedItem();
Object ReturnOrSingle = TypeOfFlightBox.getSelectedItem();
Object FlightDate = DateBox.getSelectedItem();
Object FlightTime = TimeBox.getSelectedItem();
Object FlightSeat = classOfSeatBox.getSelectedItem();
Object FlightBag = FlightBagBox.getSelectedItem();
Object FlightMeal = FlightMealBox.getSelectedItem();
if(source == PrintTicket)
{
try {
PrintWriter write = new PrintWriter("Receipt.txt");
write.println("_______________________________________");
write.println("| |");
write.println("| -------------------------------- |");
write.println("| | This is your Flight Receipt | |");
write.println("| | Please keep it safe | |");
write.println("| -------------------------------- |");
write.println("| |");
write.println("| -------------------------------- |");
write.println("| | | |");
write.println(" Airline= " + flight);
write.println(" Departure Location= " + DepartureLocation);
write.println(" Destination= " + Destination);
write.println(" Flight Type= " + ReturnOrSingle);
write.println(" Flight Day= " + FlightDate);
write.println(" Flight Time= " + FlightTime);
write.println(" Flight Seat Type= " + FlightSeat);
write.println(" Extra Bags= " + FlightBag);
write.println(" Flight Meal= " + FlightMeal);
write.println("| | | |");
write.println("| -------------------------------- |");
write.println("----------------------------------------");
write.close();
System.out.println(AirlinesBox.getSelectedItem());
System.out.println(LocationsBox.getSelectedItem());
System.out.println(DestinationBox.getSelectedItem());
System.out.println(TypeOfFlightBox.getSelectedItem());
System.out.println(DateBox.getSelectedItem());
System.out.println(TimeBox.getSelectedItem());
System.out.println(classOfSeatBox.getSelectedItem());
System.out.println(FlightBagBox.getSelectedItem());
System.out.println(FlightMealBox.getSelectedItem());
}
catch (FileNotFoundException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
最佳答案
PrintWriter 有一个讨厌的习惯，就是向您隐藏错误。我建议切换到另一个读/写类。请查看以下内容以获取有关 BufferedWriter 的信息。或者，如果您无法使用 PrintWriter，请研究如何检查错误。
http://www.mkyong.com/java/how-to-write-to-file-in-java-bufferedwriter-example/
请注意，您必须使用 BufferedReader 添加换行符，因为它没有 println 方法。有关差异的更多详细信息，请查看这篇文章。
Difference between java.io.PrintWriter and java.io.BufferedWriter?
关于java - 为什么我的 printWriter 不工作？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/31274105/