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Java Java Objects (Retired) Delivering the MVP Validation

Alex Jackson
PLUS
Alex Jackson
Courses Plus Student 1,352 Points
Posted by Alex Jackson
Alex Jackson
Courses Plus Student 1,352 Points

Don't know what I'm doing wrong

Comes up with 'Expected "firstName" to fail, but passed

TeacherAssistant.java 
public class TeacherAssistant {

  public static String validatedFieldName(String fieldName) {
    boolean isValidFieldName = true; 
    while (isValidFieldName != true) {
      if (fieldName.charAt(0) == 'm' || Character.isUpperCase(fieldName.charAt(1))) {
        isValidFieldName = true;
      } else {
        throw new IllegalArgumentException("Please insert either an 'm' before your field name, or capitalize the first letter of your name.");
      }
    }
      return fieldName;
    }
  }

1 Answer

codebyamir
codebyamir
12,108 Points

Hi Alex,

You are pretty close.

A while loop is not needed here since we are just testing a single string.

Also, your if statement condition will need a boolean AND (&&) to ensure that both conditions are met.

If the condition is true, just return the fieldname. If false, throw the exception.

  if (fieldName.charAt(0) == 'm' && Character.isUpperCase(fieldName.charAt(1))) {
        return fieldName;
   }  
   else {
     throw new IllegalArgumentException("Please insert either an 'm' before your field name, or capitalize the first letter of your name.");
   }