Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Java Java Basics Perfecting the Prototype Looping until the value passes

Posted by Francis Ojuok
Francis Ojuok
1,238 Points

Help! How do I continually prompt the user in a do while loop. as long as the response is No?

I've ensured that I've declared String response outside the do code block.

Example.java 
// I have initialized a java.io.Console for you. It is in a variable named console.
String response;
String adverb;
boolean isInvalidWord;
do {
    adverb = console.readLine ( " Enter an adverb:");
    response = console.readLine ( " Do you understand do while loops?"); 
 isInvalidWord = (adverb.equalsIgnoreCase ( "no" ));
 if (isInvalidWord) {
  console.printf ( " Do you understand do while loops? \n\n");
  }
} while ( isInvalidWord);  
   //response = console.readLine ( " Do you understand do while loops?");
console.printf (" Kindly try to answer again");

2 Answers

doesitmatter
doesitmatter
12,885 Points
doesitmatter
doesitmatter
12,885 Points

Hi Francis Ojuok,

It should be: 

String response;
do {
    response = console.readLine ( " Do you understand do while loops?"); 
} while (response.equalsIgnoreCase("no"));  
console.printf ("Because you said %s, you passed the test!", response);

You've introduced a lot of variables here which you don't really need to get the result they are asking for, why make it more complicated when you can do the same simpler?

I hope this helped!

sig

Florian Tönjes
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Florian Tönjes
Full Stack JavaScript Techdegree Graduate 50,856 Points
Florian Tönjes
.a{fill-rule:evenodd;}techdegree seal-36
Florian Tönjes
Full Stack JavaScript Techdegree Graduate 50,856 Points

Hi Francis,

just take out the "adverb" variable. The challenge wants you to store the response in the "response" variable only.

Here is your code without adverb again:

// I have initialized a java.io.Console for you. It is in a variable named console.
String response;
boolean isInvalidWord;
do {
    response = console.readLine ( " Do you understand do while loops?"); 
    isInvalidWord = (response.equalsIgnoreCase ( "no" ));
 if (isInvalidWord) {
  console.printf ( " Do you understand do while loops? \n\n");
  }
} while ( isInvalidWord);

Kind Regards, Florian