Answered: need some help with my Java homework.…

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

See similar textbooks

Related questions

Concept explainers

Question

Hello! I need some help with my Java homework. Please use Eclipse

Please add comments to the to program so I can understand what the code is doing and learn

Create a new Eclipse project named so as to include your name (eg smith15 or jones15).
In this project, create a new package with the same name as the project.
In this package, write a solution to the exercise noted below.

public static double listAdder(ArrayList<? extends Number> list) {
???
}

Examine the listAdder method fragment above. Complete the method so that it displays the list elements all on one line and returns the sum of the elements. Demonstrate the method by calling it in main with ArrayLists of three different classes that extend class Number. The operator instanceof can test for object type which would be necessary to have in a foreach loop for the data types types supported ( Integer , Byte and Double )

SAMPLE OUTPUT

12 21 7 16 8 13

Integer list totals 77.0

1.1 2.2 3.3 4.4 5.5 6.6

Double list totals 23.1

12 20 4 7

Byte list totals 43.0

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions