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Java Java Basics Perfecting the Prototype Looping until the value passes

Posted by Samapan Sharma
Samapan Sharma
352 Points

Don't know where/how to start?

Do we have to set variables? Not sure how to start

KnockKnock.java 
/*  So the age old knock knock joke goes like this:

    Person A:  Knock Knock.
    Person B:  Who's there?
    Person A:  Banana
    Person B:  Banana who?
    ...as long as Person A has answered Banana the above repeats endlessly
    ...assuming the person answers Orange we'd see
    Person B:  Orange who?
    ...and then the punchline.
    Person A:  Orange you glad I didn't say Banana again?
    (It's a really bad joke that makes it sound like "Aren't you glad I didn't say Banana again?")

    Let's just assume the only two words passed in from the console from Person B are either banana or orange.
*/

// ====BEGIN PROMPTING CODE====
do { 
// Person A asks:
console.printf("Knock Knock.\n");

// Person B asks and Person A's response is stored in the String who:
String who = console.readLine("Who's there?  ");

// Person B responds:
console.printf("%s who?\n", who);
while (isInvalidWord);
// ==== END PROMPTING CODE ====

1 Answer

Victor Learned
Victor Learned
6,976 Points
Victor Learned
Victor Learned
6,976 Points

You're on the right track. First I would look at what your Do While is actually checking. In the comments it states you can assume the user will only enter Banana or Orange so you don't need to get fancy on your check. You can just check for Banana. Plus remember to include the response outside of your loop.

String who;
// ====BEGIN PROMPTING CODE====
do {
   // Person A asks:
   console.printf("Knock Knock.\n");

   // Person B asks and Person A's response is stored in the String who:
   who = console.readLine("Who's there?  ");

    // Person B responds:
    console.printf("%s who?\n", who);
} while(who.equalsIgnoreCase("banana"));