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Java Java Basics Perfecting the Prototype Looping until the value passes

Johnathan Mullen
Johnathan Mullen
1,868 Points
Posted by Johnathan Mullen
Johnathan Mullen
1,868 Points

Do while loop

I need help figuring out what my error message means and am I going in the right direction on this question

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?");
do {
console.printf(response);
}
  while(response.equalsIgnoreCase("no"));

1 Answer

andren
andren
28,558 Points
andren
andren
28,558 Points

In your code you tell Java to run the loop as long as the response variable equals "no", but within that looping code you only print the variable, you don't have any code that might change what that variable holds, meaning the loop will never end if the user enters "no" during the prompt.

You are definitively on the right track, but you need to have a prompt within the loop that asks the question again and stores the result back into the response variable. That is the point of the loop, to repeatedly ask the question until a response other than "no" is given.

Johnathan Mullen
Johnathan Mullen
1,868 Points
Johnathan Mullen
Johnathan Mullen
1,868 Points

What if I replace the console.printf(response); with console.printf(console.readLine("Do you understand do while loops?");