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Java Java Basics Perfecting the Prototype Looping until the value passes

Posted by Mark Weinberg
Mark Weinberg
468 Points

I am having trouble with Challenge Task 2 of 3 in the last Java Basics challenge.

My code is not working. I don't know what I am doing wrong. Please need some guidance.

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

2 Answers

Rob Bridges
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Rob Bridges
Full Stack JavaScript Techdegree Graduate 35,459 Points
Rob Bridges
.a{fill-rule:evenodd;}techdegree seal-36
Rob Bridges
Full Stack JavaScript Techdegree Graduate 35,459 Points

Hey there, console is already imported so you don't need to import it, but you should create a variable to hold the answer, and then have it changed throughout the while loop, (which is exactly what you did when you created response)

Next you'll just want to check and make sure that the answer doesn't equal no.

You were super close on this, you just have that if statement in your code that isn't required.

Try 

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

Thanks.

Moath Maharmah
Moath Maharmah
3,613 Points
Moath Maharmah
Moath Maharmah
3,613 Points

You need to create an instance of System.console() like this: Console co = System.console();

the use it like this: response = co.readLine("Do you understand do while loops? ");

your final could shall be:

String response; Console co = System.console(); do { response = co.readLine("Do you understand do while loops? "); if (response.equals("no")) { co.readLine(response); } } while(response.equals("no"));