I'm confused. Am I supposed to make sure that it does not say no or that it is only allowed to say no

Question

I do not understand why my code is not going through, am I supposed to make sure this is only allowed to say no or say anything other than no?

Example.java

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

String response;

boolean isValidWord;
do {
  response = console.readLine("Do you understand do while loops?  ");
  isValidWord = (response.equalsIgnoreCase("no"));
};

Answer 1 · 2017-02-25T05:00:01Z

February 25, 2017 5:00am

You are supposed to continue looping if the response is No (notice the capital N, programming is not case insensitive so matching the requested capitalization is essential). The problem (other than the case issue) is that your do not define a while condition for your do loop. Simply setting a Boolean to true won't make the do loop continue. You have to provide said Boolean as a condition for the loop like this:

String response;

boolean isValidWord;
do {
  response = console.readLine("Do you understand do while loops?  ");
  isValidWord = (response.equalsIgnoreCase("No"));
} while (isValidWord); // A do loop always needs a while condition attached to it.

You can also shorten the code a bit by not storing the boolean in a variable and instead using its value directly as a condition like this:

String response;

do {
  response = console.readLine("Do you understand do while loops?  ");
} while (response.equalsIgnoreCase("No")); // This works exactly like the example above.

Variables are often not necessary if you only need to use the value in one place in your code. Its when you start repeating the same value, or need to store a value for use later in the program that variables becomes really useful.

Edit: I just realized that you use equalsIgnoreCase which means that the case issue actually doesn't matter at all. I made this post shortly before going to bed so I'll have to blame that little brain fart on being a bit sleep deprrived.

Answer 2 · 2017-02-25T04:45:24Z

February 25, 2017 4:45am

i think it is just supposed to loop, asking for the input, until it gets an answer. so i think it would be something like DO - prompt for response - WHILE response is empty. a do-while loop will execute at least one time, so there will be at least one prompt for a response, and if it isn't given, the loop continues until a response is given. at that point the while condition fails and you move on.

Answer 3 · 2017-02-25T06:02:10Z

February 25, 2017 6:02am

Thank you guys, I appreciate and took from what you all told me. //Declare a String variable named response, then initialize it using double quotes String response ="";

// The do while loop keeps asking the same question until "yes" is entered //So we want to keep repeating when "no" is typed // Exit the loop when "yes" is entered

do{ response = console.readLine("Do you understand do while loops?"); // "yes" or "no" is stored in the response variable // when someone types "no" the loop repeats // when someone types "yes" the loop is exited }while(response.equalsIgnoreCase("no"));

//After the loop exits, the following line prints to the console console.printf("Because you said %s, you passed the test!",response); //task 3

Welcome to the Treehouse Community

Looking to learn something new?

Chris Stringer

Chris Stringer

I'm confused. Am I supposed to make sure that it does not say no or that it is only allowed to say no

3 Answers

andren

andren

james south

james south

Chris Stringer

Chris Stringer

andren

andren