APCSA/U5/L6/runner_Plane.java

import java.util.Scanner;

public class runner_Plane {

    public static void main(String str[]) {
        Scanner scan = new Scanner(System.in);
        Plane p = new Plane();
        String instruction = "";
        while (!instruction.equals("q")) {
            System.out.println(p);
            System.out.println("Location: " + p.getLocation());
            System.out.println(
                "Type \"u\" to move upwards, \"d\" to move downwards, \"n\" for new Plane, \"q\" to quit."
            );
            instruction = scan.nextLine();
            if (instruction.equals("u")) {
                p.upward();
            } else if (instruction.equals("d")) {
                p.downward();
            } else if (instruction.equals("n")) {
                System.out.println("Starting location for a new Plane?");
                int start = scan.nextInt();
                p = new Plane(start);
                scan.nextLine();
            } else if (!instruction.equals("q")) {
                System.out.println("Instruction not recognized.");
            }
        }
    }
}