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Java Java Basics Perfecting the Prototype Looping until the value passes

Posted by James Hazel
James Hazel
Courses Plus Student 729 Points

Stuck on second step of the Do While

i can not see what i am doing wrong for the second step of the Do while quiz

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

2 Answers

lambda
lambda
12,556 Points
lambda
lambda
12,556 Points 
} while (response.equalsIgonreCase("no"));
// There is a typo somewhere on this line

// the way you wrote the program, these lines are unecessary
 boolean isInvalidWord;
 isInvalidWord = (response.equalsIgnoreCase("no"));
Franciscus Agnew
Franciscus Agnew
23,028 Points
Franciscus Agnew
Franciscus Agnew
23,028 Points

Hello James,

I noticed to things that were problematic with your code:

  1. You were missing an if statement to check if the user input was invalid or in this case "no".
  2. Remember Dont Repeat Yourself! Not using your boolean variable "isInvalidWord" as your condition for the do-while loop to exit.

As shown here:

String response;
boolean isInvalidWord;
do {
  response = console.readLine("Do you understand do while loops? ");
  isInvalidWord = (response.equals("no"));
  if (isInvalidWord) {
    console.printf("Invalid response. Try again. \n\n");
  }
} while (isInvalidWord);

Hope that helps!