2023 Fancy phone numbers Note you are required to use concepts learned in this week | Assignment Collections

Fancy phone numbers.

Note: you are required to use concepts learned in this week: strings and the Java library method the String class contains.

Write a Java class PhoneNumber that will take in a seven-letter word and return the phone number that corresponds to it. In the United States, the digits on a phone pad are mapped to letters by the following table:

digit

letter

1

2

A B C

3

D E F

4

G H I

5

J K L

6

M N O

7

P Q R S

8

T U V

9

W X Y Z

0

Hence a 7 digit phone number like HAIRCUT would map to 424-7288; NEWCARS would map to 639-2277. Submit a Java program PhoneNumber.java which has just one method decode and behaves as belo

PhoneNumber pn = new PhoneNumber();
pn.decode( “HAIRCUT”) => “4247288”
pn.decode(“NEWCARS”) => “6392277”

Implementation Requirement:

If s is a variable of type String, that holds the phone number to be decoded (e.g. “HAIRCUT”) then you should structure your program around a nested if-else statement and use the the contains method of the String class to check for the condition below:

if (“ABC”.contains(“”+s.charAt(i))) {
…;
} else if (“DEF”.contains(“”+s.charAt(i))) {
…;
…
}

Create a new project in BlueJ by clicking on the menu option Project > New project. This will create a folder with the project name (see below). All BlueJ project-related files for this project will be stored in this folder. Create new classes by clicking on the [New Class] button. All Java class files that you create (.java files) will be stored in the BlueJ project folder. The project folder will contain other files as well. After completing and testing your assignment, zip the entire BlueJ folder and submit it. Since your Instructor will need all files in the project folder, make sure you zip the entire folder. For this assignment the names of the BlueJ project, Java class files, and the zip file you submit are given below:

BlueJ project: phone_number2
Java class file: PhoneNumber.java
Submit: phone_number2.zip