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Start your free trialAdiv Abramson
6,919 PointsIf validatedFieldName() throws an exception, doesn't "throws <type>Exception" need to be in its signature?
In the exercise, the validatedFieldName() method will throw an IllegalArgumentException when the fieldName parameter doesn't begin with "m" followed by an uppercase letter. I thought that methods that throw exceptions must have a signature which includes a list of the exceptions thrown, e.g.
public void myMethod() throws IllegalArgumentException { //code if (<test>) { throw new IllegalArgumentException("Invalid parameter."); } }//myMethod()
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
return fieldName;
}
}
1 Answer
Dan Johnson
40,533 PointsSince IllegalArgumentException
is an unchecked exception (it extends RuntimeException
) you're not required to add the throws clause or use a try-catch block.