Question: I don't understand why the first code doesn't work but the second one does. 2.10 Does this code compile? If it does, what is its

I don't understand why the first code doesn't work but the

I don't understand why the first code doesn't work but the second one does.

2.10 Does this code compile? If it does, what is its output? class A 1 public class B extends A public static void main(String [] args) -[ B a Syst (B) new A(); em. out.println("works"); ClassCastException 2.11 Does this code compile? If it does, what is its output? class A 1 public class B extends A public static void main(String [] args) -[ A a - new B(); B b- (B)a; System.out .println(" works"); works

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!

MainDriver_ReverseList.cpp // List Reverse #include /* cin, cout, */ #include /* srand, rand */ #include /* time */ #include "IntList.h" /* user defined list operations */ using namespace std; int...

Draw an FST that will use as input pronunciation representations, one symbol at a time, and produce the corresponding words as output. The input alphabet should be the set of phonemes in the CMU...

c++ In Part A, you will develop functions to convert a string to a row and column. As you develop them, you will write a main function to test them. Perform the following steps: 1. Create a main. cpp...

please use Java to program Your program will read from an input file: courseData.txt . Note that when you click on the link to this file, Canvas will automatically put it into a window in the Canvas...

why doesn't code in 2.9 work like in 2.8? 2.8 Does this code compile? If it does, what is its output? class A 1 public class B extends At public static void main(Stringl] args) f Aa=new B();...

import java.util.Random; public class Main { public static void main(String[] args) { Random random = new Random(); int[] dieTosses = new int[20]; for (int i = 0; i System.out.println("Runs in die...

use Java, add scanner in code, use the unit test after finish code, use JUnit 4. that's all the informations I got. Instructions: Review the requirements given below and Complete your work. Please...

JAVA CODING The files provided in the code editor to the right contain syntax and/or logic errors. In each case, determine and fix the problem, remove all syntax and coding errors, and run the...

Assignment {8.1 A} [20 points] Rewrite your high scores program that uses a highscore struct -- but use an STL vector instead of an array. (Note, you will be using an STL vector, not the MyVector...

You are to write java code called NumericKeypad class. The way this keypad should work is that when it is created, it will have two 4 digit codes that are stored as Strings and a boolean variable...

In a Compton scattering experiment, a photon of energy Eis scattered from an electron at rest. After the scattering event occurs which of the following statements in true? Select one: a. The momentum...

a. Considering the nature of the relationship between Robatellis home office and its franchise owners, the company may be quite vulnerable to theft or fraudulent financial reporting committed by...

One point on an $ 8 0 , 0 0 0 loan for the purchase of a $ 1 1 0 , 0 0 0 home would equal A . $ 1 , 0 0 0 . B . $ 1 , 1 0 0 . C . $ 1 0 0 . D . $ 8 0 0 .

SIMAD UNIVERSITY Class: BACC25 Subject: Islamic Accounting Instructions: a) Follow The Instructions. Midterm Exam Instructor: All Ibrahim Date: 6-4-2022 b) You Have 1.5 Hrs. To Complete This Test. c)...

(Appendices) SALES, SALES RETURNS, AND SALES ALLOWANCES. The contractor sales department of a Builders Square store in suburban Chicago had the following salesrelated transactions on a recent day: a)...

(Appendices) DISCOUNT POLICY AND GROSS MARGIN. Compton Electronics sells Motorola cellular phones. During 19x8, Compton sold 1,000 units for $300 per unit. Each unit costs Compton $180. At present,...

(Appendices) INTERNAL CONTROL FOR SALES. Alcoa Building Products distributes aluminum siding and related building products to building contractors, all of whom purchase on credit. LO6 REQUIRED: List...