Question

public class FlightTest 
{
    public static void main(String[] args) 
    {
        Flight info = new Flight(null, 0, null, null);
        String name = "Delta Airlines";
        int flightNum = 54663;
        String origin = "Dallas, TX";
        String destination = "Canton, MI";
        info.setDestination(destination);
        info.setFlightNum(flightNum);
        info.setName(destination);
        info.setOrigin(destination);
        System.out.print(info);
    }
}

上面的代码是我的驱动程序。
以下是我使用的方法。我不确定它是否被正确调用或命名不正确。

public class Flight {

    private String name;
    private int flightNum;
    private String origin;
    private String destination;

    public Flight (String name, int flightNum, String origin, String destination) {
        name = "";
        flightNum = 0;
        origin ="";
        destination = "";
    }
    public enum Status {
        ONTIME, DELAYED, CANCELLED;
    }
    private Status flightStatus = Status.ONTIME;

    public String getName() {
        return name;
    }

    public void setName(String newName) {
        name = newName;
    }

    public int getFlightNum() {
        return flightNum;
    }

    public void setFlightNum(int newFlightNum) {
        flightNum = newFlightNum;
    }

    public String getOrigin() {
        return origin;
    }

    public void setOrigin(String newOrigin) {
        origin = newOrigin;
    }

    public String getDestination() {
        return destination;
    }

    public void setDestination(String newDestination) {
        destination = newDestination;
    }

    public String toString() {
        return "The airline name is " +name+ ".\the flight number is " +flightNum+".\the origin is " + origin + ".\the destination is " +destination;
    }
}

.toString()在打印时切断了“ the”一词，对于除flightnum之外的所有内容，打印出来的都是“ can mi”。

Answer 1

，除了flightnum以外，所有内容都显示为“ canton mi” 。

好吧，您正在将所有内容都设置到目标位置，即"canton, mi"：

    info.setDestination(destination); // destination
    info.setFlightNum(flightNum);     
    info.setName(destination);        // destination
    info.setOrigin(destination);      // destination

您需要使用正确的值填充info：

    info.setDestination(destination);
    info.setFlightNum(flightNum);
    info.setName(name);
    info.setOrigin(origin);

此外，\t只是一个选项卡，因此将其打印为空白。删除开头的\。

Answer 2

您的字符串中有\t，这是一个转义字符。 \t表示制表符，因此您的结果是

The airline name is Canton, MI.{tab}he

您应该删除\。

驱动程序和方法不正常

2 个答案: