Palindrome Checker

Write a class PalindromeChecker that includes at least two methods:

• a setter method setStrictMode() that takes a boolean value as input, which turns "strict mode" on and off
• a boolean method checkPhrase() that takes a phrase as a parameter and returns true if the phrase is a palindrome, and false if it isn't.

If "strict mode" is on, a palindrome will only be indicated if the phrase reads exactly the same, forwards and backwards, including spaces, punctuation, and case (upper and lower). If "strict mode" is off, then spaces, punctuation, and different cases are allowed, and the phrase will be identified as a palindrome because their letters all match.

You may wish to write an additional helper method cleanPhrase() that will produce a new, "sanitized" version of a phrase that doesn't have any spaces, punctuation, or uppercase letters in it. This method can be useful when "strict mode" is off.

Write a PalindromeCheckerTester class that will test your PalindromeChecker.

Sample interaction with tester:

Palindrome Checker!
Do you want strict mode 1) on, or 2) off? --> 1
Phrase: Madam in Eden, I'm Adam!
Not a palindrome.

Palindrome Checker!
Do you want strict mode 1) on, or 2) off? --> 1
Phrase: racecar a racecar
Is a palindrome.

Palindrome Checker!
Do you want strict mode 1) on, or 2) off? --> 2
Phrase: "Madam in Eden, I'm Adam!"
Is a palindrome.