Answer to Question #245600 in Java | JSP | JSF for kavin

Question

The Airplane always needs to check with the Airport to see if it has an

available runway before it's able to take off or land. Simulate the above-

mentioned scenario using multi-threading.

Answer 1

package com.company;
import java.util.*;
class my_airport
{
    Scanner sc = new Scanner(System.in);

    //setting the number of runways
    public int[] set_runway()
    {
        System.out.println("Setting my airport run ways");
        System.out.println("Enter number of run ways in the airport");
        int number_of_runways = sc.nextInt();
        int run_ways[] = new int[number_of_runways];
        System.out.println("please, if runaway is available enter 1 else enter any integer");
        for(int i = 0; i<number_of_runways; i++)
        {
            System.out.println("Enter the availability of runway "+(i+1));
                run_ways[i] = sc.nextInt();
        }
        return  run_ways;
    }


}

public class Main {
    static Scanner sc = new Scanner((System.in));

    public static void main(String[] args) throws InterruptedException {
        //create an object of the class
        my_airport my_object = new my_airport();
        int choice;
        System.out.println("Enter your option :");
        System.out.println("1.CHECK AVAILABILITY OF RUNAWAY");
        System.out.println("2.EXIT");
        choice = sc.nextInt();
        switch (choice)
        {
            case 1: Thread add = new Thread(new Runnable() {
                @Override
                public void run() {
                    synchronized (my_object)
                    {
                        //declare an array to store the runaways and their availability
                        int run_way_availability_array[] = my_object.set_runway();
                        //check there is any run way whose value is 1
                        int number_of_runways = run_way_availability_array.length;
                        int available = 0;
                        //check the run way available for landing
                        for(int i = 0; i<number_of_runways; i++)
                        {
                            if(run_way_availability_array[i]==1)
                            {
                                System.out.println("Runway "+(i+1)+" available for landing");
                                //set available = 1
                                available = 1;
                                //if you get any available runway just notify the pilot the runway number and exit the program
                                break;
                            }
                        }
                        if(available==0)
                        {
                            System.out.println("No run way is available for landing");
                        }
                    }

                }
            });
                add.start();
                add.join();
                break;
            case 2: Thread sub = new Thread(new Runnable() {
                @Override
                public void run() {
                    synchronized (my_object)
                    {
                        System.out.println("Program exited successfully");
                    }

                }
            });
                sub.start();
                sub.join();
                break;

            default:
                System.out.println("Invalid option, please try again");
        }
    }
}