Module 4 / Ch 4 Math Functions, Characters and Strings

This third week in Java we study a number of critical java skills: Math functions, Characters and Strings. Numbers can be used in mathematic such as Addition, Subtraction, etc. They can also be used in text such as a SSN or address. Both types of code manipulation are very important. Thus, please take the time needed to master these skills in Chapter 4.

I will discuss these new skills this evening in our Monday Evening 6:30 Working Session: https://us.bbcollab.com/guest/22ae06764b7143ab9a60a8c753635022

Assignment 3 / Exercise 4.15 Phone Key Pad (page 154)

The international standard letterumber mapping found on the telephone is shown below:

Write a program that prompts the user to enter a lowercase or uppercase letter and displays its corresponding number. For a nonletter input, display invalid input.

Enter a letter: A

The corresponding number is 2

Enter a letter: t

The corresponding number is 8

Enter a letter: +

+ is an invalid input