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Java Java Objects (Retired) Delivering the MVP Validation

Posted by Jon Tibbetts
Jon Tibbetts
6,892 Points

syntax

Everything looks fine, what is wrong with the syntax

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 c = fieldName.charAt(0);
    if (Character.toLowerCase(c) != 'm') {
        throw new IllegalArgumentException("member field must start with an m");
    }


    return fieldName;
  }

}

2 Answers

ISAIAH S
ISAIAH S
1,409 Points
ISAIAH S
ISAIAH S
1,409 Points

Looks good. You got number 1 down. Now all you need to do is make sure that the second letter is not lower case.

HINT: Use isUpperCase() and !.

Jon Tibbetts
Jon Tibbetts
6,892 Points
Jon Tibbetts
Jon Tibbetts
6,892 Points

ya figured it out... thanks