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Java Java Basics Perfecting the Prototype Looping until the value passes

luis martinez
luis martinez
2,480 Points
Posted by luis martinez
luis martinez
2,480 Points

i don't know if I'm doing this right

/* 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: String who = ("banana"); 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? "); do { who=console.readLine("type banana"); } if (who.equalsIgnoreCase("banana"); { console.printf("banana who?\n"); } while (who); // Person B responds: //console.printf("%s who?\n", who);

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

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:
String who = ("banana");
String PersonA = ("banana");
console.printf("Knock Knock.\n");
//boolean isInvalidWord;
// Person B asks and Person A's response is stored in the String who:
String who = console.readLine("Who's there?  ");
do { who=console.readLine("type banana");
   }
if (who.equalsIgnoreCase("banana");
{
  console.printf("banana who?\n");
}
while (who);
// Person B responds:
//console.printf("%s who?\n", who);

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

1 Answer

Rob Bridges
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Rob Bridges
Full Stack JavaScript Techdegree Graduate 35,467 Points
Rob Bridges
.a{fill-rule:evenodd;}techdegree seal-36
Rob Bridges
Full Stack JavaScript Techdegree Graduate 35,467 Points

Hey there Luis,

Looks like you might slightly be overthinking this problem, you did a good job at declaring your string outside of the loop, but really we don't need to set it to anything yet, just declare it so that the loop can correctly modify the variable.

After that we should wrap the three lines of the joke in a do loop, and at the end of the loop tell it to repeat the loop while who equals Banana, it should look something like below.

String who;
do {
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"));

What this basically does is it will repeat each 3 lines of the loop, but as soon as we pass the problem a value of who that is not banana it will let the program continue and break it's cycle.

Thanks, let me know if this helps, or even it doesn't.

luis martinez
luis martinez
2,480 Points
luis martinez
luis martinez
2,480 Points

Thank you for the help. Feel much better now.