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 Keanu Barnard
Keanu Barnard
2,018 Points

Help with these task ?

Could someone please give me the the awnser to these tasks i really cant do it , ive been stuck on it for like 3 days and it would be great if someone could give me the awnsers so that i could see where i was going wrong thank you !

Example.java 
// I have initialized a java.io.Console for you. It is in a variable named console.

1 Answer

Nuno Castro
Nuno Castro
21,029 Points
Nuno Castro
Nuno Castro
21,029 Points

For the first part of the challenge, you need to initialize the input, like this:

String reponse = console.readLine("Do you understand while loops");

Then, you have to create the do-while loop. Don't forget to declare your string and a boolean outside the loop. The input goes inside the loop:

String response;
boolean isNo;
do {
  response = console.readLine("Do you understand while loops?");
  isNo = (response.equalsIgnoreCase("no"));
  if(isNo){
    console.printf("Try again.");
  }
} while(isNo);

This is because the input (readLine) must be created while the answer is no (while(isNo)). The final solution is as follows:

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