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JAVA入门第二季4-2练习

爱宝宝真的太好了
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public class Transportation {

    private String transportway;
    private int num;
    public static int n = 1;

    public Transportation(String transportway, int num)
    {
        this.transportway = transportway;
        this.num = num;     
    }

    public void show() 
    {
        System.out.print("No."+ n);
        n++;
        System.out.println(" transportation is taking on " + transportway + ", and the Capacity is " + num);
    }

//recommend to use STATIC class blah blah
static class Bus extends Transportation
{
    public Bus(String a, int b)
    {
        super(a,b);
    }
}

static class Ship extends Transportation
{
    public Ship(String a ,int b) 
    {
        super(a,b);
    }
}

static class Airplane extends Transportation
{
    public Airplane(String a ,int b) 
    {
        super(a,b);
    }
}

static class Subway extends Transportation
{
    public Subway(String a ,int b) 
    {
        super(a,b);
    }
}

static class Car extends Transportation
{
    public Car(String a ,int b) 
    {
        super(a,b);
    }
}

public static void main(String[] args) 
    {
    Bus bus = new Bus("Land", 40);
    Ship ship = new Ship("Sea", 500);
    Airplane airplane = new Airplane("Sky", 300);
    Subway subway = new Subway("Underground", 200);
    Car car = new Car("Street", 4);

    bus.show();
    ship.show();
    airplane.show();
    subway.show();
    car.show();
    }
}
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