Question 1: Consider the Java code given below. The method boolean co…

1import java.util.*;
2interface Vehicle {
3    void start();
4}
5class Car implements Vehicle {
6    public void start() {
7        System.out.println("Starting a Car");
8    }
9}
10class Motorcycle implements Vehicle {
11    public void start() {
12        System.out.println("Starting a Motorcycle");
13    }
14}
15class Garage<T extends Vehicle> {
16    private Map<String, T> vehicles;
17    public Garage() {
18        vehicles = new LinkedHashMap<String, T>();//LINE A
19    }
20
21    public void add(String name, T vehicle) {
22        vehicles.put(name, vehicle);
23    }
24    public void startVehicle(String name) {
25        if (vehicles.containsKey(name)) {
26            T v = vehicles.get(name); //LINE B
27            v.start();
28        } else {
29            System.out.println("Vehicle not found");
30        }
31    }
32}
33public class TestGarage {
34    public static void main(String[] args) {
35        Garage<Vehicle> g = new Garage<Vehicle>();
36        Vehicle v1 = new Car();
37        Vehicle v2 = new Motorcycle();
38        g.add("car", v1);
39        g.add("motorcycle", v2);
40        g.startVehicle("car");
41        g.startVehicle("bicycle");
42    }
43}