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Start your free trialBenjamin Ing
910 PointsStuck :(
I'm not sure how to check for upper case validation
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' && fieldName.charAt(1) )
{
throw new IllegalArgumentException("member field names must start with an 'm'");
}
return fieldName;
}
}
2 Answers
Michael Hess
24,512 PointsHi Benjamin,
Try this:
public class TeacherAssistant {
public static String validatedFieldName(String fieldName) {
if (fieldName.startsWith("m") && Character.isUpperCase(fieldName.charAt(1))) {
return fieldName;
} else {
throw new IllegalArgumentException("Invalid field name");
}
}
}
If you have any questions feel free to ask!
Mark VonGyer
21,239 PointsGoogle it.
I believe there is a method called isUpperCase(), which should return a boolean value of true for uppercased.