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Start your free trialMariana Nuta
5,321 PointsHow to check if a character is upperCased? I tried Character.isUpperCase(), but it is not imported
How to check if a character is upperCased? I tried Character.isUpperCase(), but it is not imported
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("Fieldname must start with m and second letter to be uppercase");
}
return fieldName;
}
}
1 Answer
jcorum
71,830 PointsMariana, I just tried this:
if(fieldName.charAt(0) != 'm' || Character.isUpperCase(fieldName.charAt(1)) ) {
throw new IllegalArgumentException("Fieldname must start with m and second letter must be uppercase");
}
and it compiled.
But I still got a Bummer! because it now says it wants
m_first_name
to validate. But since Character.isUpperCase('_') is false the test as written won't validate it! I didn't watch the video but the comments in the challenge seem to imply that the only requirements are that an instance variable's name start with m and be camelCased! So looks like you'll need a slightly more complicated or clause.