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Java Java Objects (Retired) Delivering the MVP Validation

Emeka Okoro
PLUS
Emeka Okoro
Courses Plus Student 11,724 Points
Posted by Emeka Okoro
Emeka Okoro
Courses Plus Student 11,724 Points

exercise on validation in delivering the mvp

i need help with this .. the error seems to be in my second if condition

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

    if(fieldName.charAt(0) != 'm') {
      throw new IllegalArgumentException("make this a member variable");
    }
    if(!Character.isUppperCase(fieldName.charAt(1))) {
      throw new IllegalArgumentException("use camelCasing");
    }
    return fieldName;
  }

}
Gareth Gray
Gareth Gray
3,336 Points
Gareth Gray
Gareth Gray
3,336 Points

Really hope I'm wrong but is the error here simply because of the extra 'p' in '.isUpperCase'?

3 Answers

Paul Willis
Paul Willis
4,082 Points 
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.charAt(0) != 'm' || !Character.isUpperCase(fieldName.charAt(1))) {
      throw new IllegalArgumentException();
    } else {
      return fieldName;
    }
  }
Paul Willis
Paul Willis
4,082 Points

Sure! No problem! Would you mind marking my answer as 'best answer'? Thanks!