3-3Please tell if each line of code compiles and run, compiles with rumtime exception, or if it does not compile for #1-#4 based on the heirarchy of code in the first pictrure. 1 Bike bikeA =(Bike) mb;2 MountainBike mountainBikeA3 MountainBike mountainBikeB4 MountainBike mountainBikeC1: compiles and runs2: [Select]===(MountainBike) b1;(MountainBike) rb;(MountainBike) b2;<3: [Select]4 compiles, but runtime exception public class Bikepublic Bike ()public class MountainBike extends Bike. public MountainBike ()Bike b1 = new Mountain Bike ();Bike b2 new RoadBike ();MountainBike mb = new MountainBike();RoadBike rb = new RoadBike();public class RoadBike extends Bike• public RoadBike ()For the class hierarchy and declarations above, correctly indicate whether eachof the following statements will compile and what will happen at runtime (runscorrectly or runtime exception). It may be helpful to use scratch paper to keeptrack of each variable's static and dynamic type.

1 Compiles and runs 2 Compiles and runs

Answered: 1 Bike bikeA - (Bike) mb; 2…

1 Bike bikeA - (Bike) mb; 2 MountainBike mountainBikeA 3 MountainBike mountainBikeB 4 MountainBike mountainBikeC (MountainBike) b1; (MountainBike) rb; = (MountainBike) b2;

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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