Question

Define an interface called Vehicle, which requires the following methods getName: returns a String getTopSpeed: returns an int getMaxPassengers: returns an int Note that the class Car implements this interface and is preloaded (in one of the following questions you will define this class)

For example:

Test

Vehicle v = new Car("BMW", 280, 5); System.out.println(v.getName()); System.out.println(v.getTopSpeed()); System.out.println(v.getMaxPassengers());

Results :

BMW

280

5

Test 2 :

Vehicle v = new Car("Smart", 150, 2); System.out.println(v.getName()); System.out.println(v.getTopSpeed()); System.out.println(v.getMaxPassengers());

Results :

Smart

150

2

Answer 1

//Test.java

/* Interface Vehicle with abstract methods */
interface Vehicle {
   public String getName();

   public int getTopSpeed();

   public int getMaxPassengers();
}

/* class car implements interface Vehicle */
class Car implements Vehicle {
   private String name;
   private int topSpeed, maxPassengers;

   public Car(String string, int i, int j) {
       setName(string);
       setTopSpeed(i);
       setMaxPassengers(j);
   }

   public String getName() {
       return name;
   }

   public void setName(String name) {
       this.name = name;
   }

   public int getTopSpeed() {
       return topSpeed;
   }

   public void setTopSpeed(int topSpeed) {
       this.topSpeed = topSpeed;
   }

   public int getMaxPassengers() {
       return maxPassengers;
   }

   public void setMaxPassengers(int maxPassengers) {
       this.maxPassengers = maxPassengers;
   }
}

/* Test class */
public class Test {
   public static void main(String[] args) {
       Vehicle v = new Car("BMW", 280, 5);
       System.out.println(v.getName());
       System.out.println(v.getTopSpeed());
       System.out.println(v.getMaxPassengers());
   }
}

//Output