Question

定义班级Passenger和TrainCoach，并从TrainCoach

String[]

定义一个类Passenger，其中包含字段名称（String），年龄（int），性别（char：M / F），重量（ int）
定义一个包含TrainCoach字段的班级Passenger[] passengers。
定义类Train及其中的函数。班级火车有矢量教练。给定Vector作为输入，创建对象Train，其中每个String []类似于上面作为TrainCoach输入的那个。

以下就是我所做的。但是我陷入了火车课。我没有得到如何将矢量对象传递给main方法。我试过以下：

乘客等级：

package Passenger;

 public class Passenger {
    String name;
    int age;
    char gender;
    int weight;  
    public Passenger(){}
        public Passenger(String data){
                String[] s=data.split(":");
                this.name=s[0];
                this.age=Integer.parseInt(s[1]);
                this.gender=s[2].charAt(0);
                this.weight=Integer.parseInt(s[3]);
        }
        public Passenger[] makePassenger(String[] input){
            Passenger[] passengers=new Passenger[input.length];
            for(int i=0;i<input.length;i++){
                passengers[i]=new Passenger(input[i]);
            }
            return passengers;
        }
}

TrainCoach课程： 包裹乘客;

public class TrainCoach {
    Passenger[] passengers;
    static char gender;
    public TrainCoach(){}
    public TrainCoach(Passenger[] passengers){
        this.passengers=passengers;
    }
    public TrainCoach(String[] data){
        Passenger[] passengers=new Passenger[data.length];
                for(int i=0;i<data.length;i++){
                    passengers[i]=new Passenger(data[i]);
                }
                this.passengers=passengers;     
    }
    public static class PassengerTest{

        public static void main(String[] args){
            String[] str={"Amit Sharma:24:M:72","Rahul:12:M:55"};
            Passenger pass=new Passenger();
            Passenger[] passenger=pass.makePassenger(str);
            TrainCoach traincoach=new TrainCoach(passenger);
            int c=traincoach.numberOfPassengers();
            int d=traincoach.numberOfChildren();
            int b=traincoach.totalWeight();
            int a=traincoach.numberOf(gender);
            System.out.print(c+","+d+","+b+","+a);
        }
    }
    public int numberOfPassengers(){
        return this.passengers.length;
    }
    public int numberOfChildren(){
        int count=0;
        for(int i=0;i<passengers.length;i++){
            if(passengers[i].age < 16){
                count++;
            }
        }
        return count;
    }
    public int totalWeight(){
        int sum=0;
        for(int i=0;i<passengers.length;i++){
            sum+=passengers[i].weight;
        }
        return sum;
    }
    public int numberOf(char gender){
        int count=0;
        for(int i=0;i<passengers.length;i++){
            if(passengers[i].gender=='M'){
                count++;
            }
            else if(passengers[i].gender=='F'){
                count++;
            }
        }
        return count;
    }
}

培训班：

package Passenger;

import java.util.Vector;

public class Train{

    Vector<TrainCoach>coaches;

    public Train(){}
    public Train(Vector<String[]> data){
        for(int i=0;i<data.size();i++){
            coaches.addElement(new TrainCoach(data.elementAt(i)));
        }
        this.coaches=coaches;
    }
    public static  class PassTrain{

        public static void main(String[] s){
            Passenger p=new Passenger();
            Passenger[] passenger =p.makePassenger(s);
            Vector<String[]> tc=new Vector<String[]>();
                    tc.addAll(tc);
            Train t=new Train(tc);
            int c=tc.numberOfPassengers();
            System.out.print(c);
        }
    }
    public int numberOfPassengers(){
        int numOfPassengersInTrain = 0;
        for(int i = 0; i < coaches.size(); i++){
            numOfPassengersInTrain += this.coaches.elementAt(i).numberOfPassengers();
        }
        return(numOfPassengersInTrain);
    }
}

如何将vector对象传递给main方法？

0 个答案: