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Java Java Basics Perfecting the Prototype Looping until the value passes

David Tsai
David Tsai
7,969 Points
Posted by David Tsai
David Tsai
7,969 Points

Exception in thread

well, I think some people might also got this problem. I don't actually understand is this a bug or what ?

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

String response = console.readLine("Do you understand do while loops?");
//String response;
do {
  if(response.equalsIgnoreCase("No")) { 
    console.printf("That language is not allowed.");
  }
} while(response.equalsIgnoreCase("No"));
Edvardas Markevicius
Edvardas Markevicius
Courses Plus Student 9,193 Points

You need to continue prompting for a response from the user, or the loop will never end, just declare the String outside the loop, and prompt for a response inside the loop. If you still haven't understood what I said, just check the code below (I recommend you to try solving it yourself before checking, much more rewarding ;) )

// 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?  ");

}while (response.equalsIgnoreCase("No"));

console.printf("Because you said %s, you passed the test!", response);