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Start your free trialShane May
5,114 PointsHow do I check if the first letter is a 'm' or if the second letter is capitol?
How do I check if the first letter is a 'm' or if the second letter is capitol?
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.is){
throw new IllegalArgumentException("Must begin with an m");
}
if(fieldName[1] != fieldName[1].toUpperCase()){
throw new IllegalArgumentException("Second letter must be a capitol");
}
return fieldName;
}
}
1 Answer
Geovanie Alvarez
21,500 PointsThis is a way that i did it
public class TeacherAssistant {
public static String validatedFieldName(String fieldName) {
// These things should be verified:
// 1. Member fields must start with an 'm'
if (!fieldName.startsWith("m")) {
throw new IllegalArgumentException("something"); // replace "something" with the message
}
// 2. The second letter in the field name must be uppercased to ensure camel-casing
if (!Character.isUpperCase(fieldName.charAt(1))) {
throw new IllegalArgumentException("something"); // replace "something" with the message
}
// NOTE: To check if something is not equal use the != symbol. eg: 3 != 4
return fieldName;
}
}
Shane May
5,114 PointsShane May
5,114 PointsThank you. I didn't know about the methods startsWith() and isUpperCase(). How did you know about those?