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Java Java Objects (Retired) Delivering the MVP Validation

I'm having some trouble with this challenge! I think my code should pass, but its not.

My code is throwing 'Expected "m_first_name'' as an error.

Can anyone help?

Thanks, Sam

TeacherAssistant.java
public class TeacherAssistant {

  public static String validatedFieldName(String fieldName) {
    // These things should be verified:
    // 1.  Member fields must start with an 'm'
    // 2.  The second letter in the field name must be uppercased to ensure camel-casing
    // NOTE:  To check if something is not equal use the != symbol. eg: 3 != 4
    char second =  fieldName.charAt(1);

    if (fieldName.charAt(0) != 'm'){
      throw new IllegalArgumentException("first letter must be M!");
    }
    if (Character.isUpperCase(second)){
      throw new IllegalArgumentException("first letter must be M!");
    }




    return fieldName;
  }

}

3 Answers

Try this...

if (!Character.isUpperCase(second)){
      throw new IllegalArgumentException("second letter must be Capitalized!");
    }

Well, that was embarrassing!

Thanks

private char validateGuess(char letter) {
    if (!Character.isLetter(letter)) {
      throw new IllegalArgumentException("A letter is required."
    }
    letter = Character.toLowerCase(letter);
    if (mMisses.indexOf(letter) >= 0 || mHits.indexOf(letter) >= 0) { 
      throw new IllegalArgumentException(letter + " has already been guessed")           }
    return letter;
  }
  • The above code is the example to follow.
  • We care about charAt for this challenge, rather than indexOf
  • In pseudocode, we want to check for the following condition, and throw an error: " if the character at index 0 of fieldName does not equal 'm' OR the character at index 1 of fieldName is not upper case"