Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)
7th Edition
ISBN: 9780134802213
Author: Tony Gaddis
Publisher: PEARSON
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Chapter 9, Problem 5PC
Program Plan Intro
Password Verifier
Program Plan:
The detail of “PasswordDemo” class is shown below:
- In the “main()” method,
- Declare the required variable.
- Read the password input from user.
- Check whether the password is valid or not. If yes,
- Display the error message to user.
- Otherwise, display the valid password message to user.
- Exit the system.
The detail of “PasswordVerifier” class is shown below:
- Declare and initialize the minimum password length.
- In the isValid() method,
- Declare the variable.
- Check whether the password is valid or not. If yes,
- Set the status as “true”.
- Otherwise, set the status as “false”.
- Return the status.
- In the hasUpperCase() method,
- Declare the variable.
- The for loop executes until length of string. If yes,
- Check the string has at least one uppercase character. If yes, set the status as “true”.
- Return the status.
- In the hasLowerCase() method,
- Declare the variable.
- The for loop executes until length of string. If yes,
- Check the string has at least one lowercase character. If yes, set the status as “true”.
- Return the status.
- In the hasDigit() method,
- Declare the variable.
- The for loop executes until length of string. If yes,
- Check the string contains numeric digit. If yes, set the status as “true”.
- Return the status.
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Chapter 9 Solutions
Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)
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