CS 111: Lab 3 main content

Student Learning Objectives

Demonstrate the ability to

Use the jGRASP programming environment to create a new Java project at u:\Lab3\ with two Java code files: PasswordVerifier.java and Driver.java.
Use class (static) methods in class PasswordVerifier.
Use String and Character class methods

Do Chapter 8, Programming Challenge 5: Password Verifier

Create a new Java project at u:\Lab3\.
Add two Java files to the project:
1. Driver should contain the main method
2. PasswordVerifier should contain class (static) methods to check each condition for a valid password
  1. Password should contain at least six characters
  2. Password should contain at least one uppercase letter
  3. Password should contain at least one lowercase letter
  4. Password should contain at least one digit
Write the code for the Driver class to
- Prompt for and read in a user password
- Call a static method in PasswordVerifier to validate the password
- Display whether the password is valid or not

Follow the sample sessions shown below:

Enter a password: aas2ss
Invalid password.

Session 2

Enter a password: aa5SSc
Valid password.

If you finish during Tuesday's lab, ask your TA to come over to check your program and give you credit.
Note: The TA will check your program on your computer. You do not need to print out the source code.
If you are unable during Tuesday's lab, turn in the printout of PasswordVerifier.java by the start of class on Wednesday.

If you finish early, get yourself checked off first! As a programming challenge (not required but recommended):

Modify your program so that the

The user needs to keep entering candidate passwords until they enter a valid one
The user need to also enter a confirming password that must match the first candidate password