Module 09 Post-Assessment Part 2 Password Verifier

Imagine you are developing a software package for Amazon.com that requires users to enter their own passwords. Your software requires that
users’ passwords meet the following criteria:
 The password should be at least six characters long.
 The password should contain at least one uppercase and at least one lowercase letter.
 The password should have at least one digit.
Write a class that verifies that a password meets the stated criteria.
Demonstrate the class in a program that allows the user to enter a password and then displays a message indicating whether it is valid or not