java - 如何将字符串从一个类获取到另一个类

Question

我正在制作一个空中交通管制系统，我有一个 Plane 类，根据是否有飞机来调用它的名称。如果有 1 架飞机，则显示 KLM；如果没有，则显示没有飞机。

我正在寻找一种方法将该飞机名称从飞机类别转移到机场类别以放入队列中。这是平面类的代码

package airtrafficcontrolv3;

import java.util.TimerTask;


class Plane
        extends TimerTask
{

    public int nextPlaneLoop = 0;
    public int planes;
    public int fuel;
    public String planeName;

    @Override
    public void run()
    {
        Observer o = new ObserverImpl();
        Subject s = new SubjectImpl();

        if (nextPlaneLoop <= 167)
        {
            //Currently only running 1 or 0 planes...
            planes = (int) (Math.random() * ((2 - 1) + 1));
            //System.out.println("Random generated plane amount: " + planes);
            //System.out.println("Method called, one whole day loop");
            //Adds to the plane in the airspace loop
            nextPlaneLoop++;
            //System.out.println("Loop incrementing: " + nextPlaneLoop);

            if (planes == 0)
            {
                //System.out.println("No fuel is required as no planes are coming in");
                planeName = "No incoming plane";
                //System.out.println("Planes name is: " + planeName);

                System.out.println("Inbound amount of planes: "+planes);
                System.out.println("Inbound: " + planeName);
                System.out.println("Inbound fuel amount: None ");

                System.out.println(" ");
            }
            else
            {
                //Amount of fuel
                fuel = 30 + (int) (Math.random() * ((120 - 30) + 1));
                //System.out.println("Random fuel: " + fuel);
                planeName = "KLM AirFrance";
                System.out.println("Inbound amount of planes: "+planes);
                System.out.println("Inbound: " + planeName);
                System.out.println("Inbound fuel amount: "+fuel);

                System.out.println(" ");
            }
        }
        else
        {
            this.cancel();
            System.out.println("Day Finished");
        }

                s.addObserver(o);
                s.setState(planeName);

                System.out.println(planeName);

                //finalName = planeName;
                Airport point = new Airport();

                //System.out.println(planeName);
    }
}

这就是我的机场舱位。

/*
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package airtrafficcontrolv3;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;

public class Airport
{
    Plane point = new Plane();
    Queue <String> waiting = new LinkedList<String>();

    public Airport()
    {
        //waiting.add(point.);

        while (!waiting.isEmpty())
        {
            System.out.println("Waiting to take off: "+waiting);
            try
            {
                System.out.println("Preparing to taxi: "+waiting.remove());
                Thread.sleep(5000);
            }
            catch (InterruptedException ex)
            {
                Logger.getLogger(Airport.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
    }

}

是否有人可以建议如何从飞机舱位到机场舱位的名称。

Answer 1

在 Plane 类中为 planeName 创建一个访问器(getName() 是常见的样式命名法)。从每个 Plane 实例的 Airport 类中调用它。