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![Andrew Mitchell](https://secure.gravatar.com/avatar/6d6e6c930b540e80b14425014086aad7?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Andrew Mitchell
2,739 PointsWhat the crap I get the message Bummer! "mFirstName" should have passed, but "mFirstName" was reported.
I get the message Bummer! "mFirstName" should have passed, but "mFirstName" was reported.
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
if (fieldName.indexOf(0)!='m') {
throw new IllegalArgumentException("mFirstName") ;
}
if (!Character.isUpperCase(fieldName.indexOf(1))) {
throw new IllegalArgumentException("Must be camel-cased");
}
return fieldName;
}
}
1 Answer
![Clayton Perszyk](https://secure.gravatar.com/avatar/91570a217e3dbbeb3a4bb32bd92c70e8?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Clayton Perszyk
Treehouse Moderator 48,838 PointsI replaced your calls to indexOf() to charAt() and was able to get it to pass. You pass indexOf() a char and it returns an int that will be -1, if the character was not found; If the character was found the method will return the char's index. You pass charAt() an index value and it will return a char (i.e. a letter) which you can use for comparison.
Andrew Mitchell
2,739 PointsAndrew Mitchell
2,739 PointsThanks after your help and adding a block against underscores i passed the challenge :) :D thank you very much