java - 如何将对象添加到 vector 中？

Question

问题是——将航类的详细信息作为输入，创建对象 Ticket 的 vector。请注意，门票应以与输入相同的顺序出现在 vector 中。详细信息已作为 String[] 提供。数组中的每一项都对应一张机票，并具有以下空格分隔的详细信息:Origin, destination, departure, arrival, amount。

我尝试跟随，但由于我是新手，而且我是第一次这样做，所以我找不到自己的路。

   import java.util.Vector;

    public class FlightTickets {

        String origin;
        String destination;
        String departure;
        String arrival;
        String amount;
        Vector v = new Vector();

        public FlightTickets(String origin, String destination, String departure, String arrival, String amount) {
            this.origin = origin;
            this.destination = destination;
            this.departure = departure;
            this.arrival = arrival;
            this.amount = amount;
        }

        public static void main(String[] args) {
            FlightTickets ticket = new FlightTickets("Caledonia", "South Korea", "10:00", "5:00", "15000");
            v.add(ticket);
        }
    }

Answer 1

试试这个:

public static void main(String[] args) {           
    FlightTickets ticket = new FlightTickets("Caledonia", "South <bKorea", "10:00", "5:00", "15000");
    ticket.v.add(ticket);
}

请记住，您不能从静态方法访问非静态变量。顺便说一句，由于 Vector 类是泛型类型，因此最好像这样定义“v”:

Vector<TestClass> v = new Vector<TestClass>();

---

作为对您评论的回应，我提供了一个相当完整的实现以获取更多详细信息:

import java.util.Iterator;
import java.util.Vector;

public class TestClass {

    String Origin;
    String destination;
    String departure;
    String arrival;
    String amount;
    Vector<TestClass> v = new Vector<TestClass>();

    public TestClass(String Origin, String destination, String departure, String arrival, String amount) {
        this.Origin = Origin;
        this.destination = destination;
        this.departure = departure;
        this.arrival = arrival;
        this.amount = amount;
    }

    public static void main(String[] args){
        TestClass ticket = new TestClass("Caledonia", "South Korea", "10:00", "5:00", "15000");
        ticket.v.add(ticket);
        Iterator<TestClass> it = ticket.v.iterator();
        while(it.hasNext())
            System.out.println(it.next().Origin);
    }
}