Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Java Java Basics Perfecting the Prototype Looping until the value passes

Benjamin Cha
Benjamin Cha
2,761 Points

How to fix this prompt-related project?

I must get this program to work, but there's one compile error that's causing it to malfunction. What way should I fix this...

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

1 Answer

Steven Parker
Steven Parker
231,172 Points

The result suggests that you use the "preview" button to see the errors. When you do, you get this:

JavaTester.java:123: error: cannot find symbol
  booleanisNotUnderstanding = (response.equalsIgnoreCase("no"));
  ^
  symbol:   variable booleanisNotUnderstanding
  location: class JavaTester
1 error

This refers to the variable on line 5 of the code, which on line 2 was declared with the name "isNotUnderstanding". The type of variable is indeed "boolean", but that keyword is not part of the name.

Changing the name on line 5 to "isNotUnderstanding" will remove the compile error.

Benjamin Cha
Benjamin Cha
2,761 Points

Thanks! I didn't know that there was an error on the 5th line, but I saw that I accidentally added "boolean" on to the isNotUnderstanding variable and deleted it. It worked after fixing it! :)

Thank you!