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Adam Hoffman
1,813 PointsWhat am i doing wrong ???
I'm stuck in the java validation code challenge could you please tell me what i am doing wrong????
her's my code:
public class TeacherAssistant {
public static String validatedFieldName(String fieldName) {
char [] myArray = fieldName.toCharArray();
if(myArray[0] != 'm'){
throw new IllegalArgumentException ("The first letter must be an m !!!!");
}else{
if(myArray[1] == myArray[1].toUpperCase()){
return fieldName;
}else{
throw new IllegalArgumentException ("The second letter must be uppercase !!!!");
}
}
// 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
}
}
my error console tells me this error:
./TeacherAssistant.java:8: error: char cannot be dereferenced if(myArray[1] == myArray[1].toUpperCase()){ ^ 1 error
sorry i don't no how to add a picture ;(
Moderator Edited to add markdown to the code
4 Answers
Brandon Adams
10,325 PointsI think you have to use .equals() instead of == in the code. For the != use something like if(!x.equals(y))
Jeremy Hill
29,567 Pointsit should be something like this:
if((!fieldName.charAt(0).equals('m')) || Character.isLowerCase(fieldName.charAt(1)))
throw new IllegalArgumentException ("Field Name is invalid!");
else
return fieldName;
I had to edit my code- I didn't realize at first that it said that it had to have an 'm' at the beginning.
Jeremy Hill
29,567 PointsI had to open my workspace to check it: the code will work like this:
public class javaExample {
public static String validatedFieldName(String fieldName) {
if((fieldName.charAt(0) != 'm') || Character.isLowerCase(fieldName.charAt(1)))
throw new IllegalArgumentException ("Field Name is invalid!");
else
return 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
}
Martin Krstevski
5,171 PointsIn the if statement where you check if the letter is upper cased you should state as Character.toUpperCase(myArray[1]) It should look like this if(myArray[1] == Character.toUpperCase(myArray[1]))