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Start your free trialDonna Norris
5,197 Pointsdon't know why this doesn't work
It's asking me to throw an exception if the second letter in the field name is not uppercase.
char[] charFieldName=fieldName.toCharArray();
if (charFieldName[1].isLowerCase()){
throw new IllegalArgumentException("Must use camel case");
}
public class TeacherAssistant {
public static String validatedFieldName(String fieldName) {
char[] charFieldName=fieldName.toCharArray();
if (charFieldName[0]!='m'){
throw new IllegalArgumentException("Must begin with 'm'");
}
if (charFieldName[1].isLowerCase()){
throw new IllegalArgumentException("Must use camel case");
}
// 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
return fieldName;
}
}
2 Answers
Rebecca Rich
Courses Plus Student 8,592 PointsYour issue is with:
charFieldName[1].isLowerCase()
charFieldName[1] is a character. The isLowerCase()
method is a static method, so it needs to be used like this:
Character.isLowerCase(charFieldName[1])
Dustin Bryce Flanary
17,663 PointsThanks for the question and answer.
Donna Norris
5,197 PointsDonna Norris
5,197 PointsThanks!