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Java Java Basics Perfecting the Prototype Looping until the value passes

Aaron Williams
Aaron Williams
1,702 Points

How do i do this?

Im not sure how i would do this.

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====

// 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);

// ==== END PROMPTING CODE ====

The comment says, "as long as Person A has answered Banana the above repeats endlessly", so you want to wrap the code in the do{} while loop like this.

do{ ... code... } while (who == "banana");

And remember to declare the String who outside the do while block.

1 Answer

Harry James
Harry James
14,780 Points

Gunjeet Hattar did a great job at explaining this question over here! I highly recommend you take a look at this if you're still having trouble with this question!

Also, if it helped you, be sure to vote up Gunjeet's comment on the page I linked!