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Start your free trialThomas Katalenas
11,033 PointsI've added the method validatedFieldName it will return the validated field name. If the value passed in doesn't meet th
it says I can't do fieldName[0]
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[0] != 'm'){
continue;
}else{throw IllegalArgumentException;}
return fieldName;
}
}
3 Answers
Kourosh Raeen
23,733 PointsTry the charAt() method. Call it on fieldName and pass 0 to it as the index.
Thomas Katalenas
11,033 Pointspublic 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')
continue;
if (fieldName.charAt(1) == fieldName.charAt(1).toUpperCase())
return fieldName;
}
}
./TeacherAssistant.java:9: error: continue outside of loop
continue;
^
./TeacherAssistant.java:10: error: char cannot be dereferenced
if (fieldName.charAt(1) == fieldName.charAt(1).toUpperCase())
^
2 errors
Kourosh Raeen
23,733 PointsThe continue keyword is used in loops. You need an if-else statement. In the if part check to see if fieldName doesn't start with 'm' or the second letter of fieldName is not uppercase. If that's the case you need to throw an IllegalArgumentException exception. In the else part return fieldName.
Also, you can make use of the isUpperCase() method of the Character class to see if the second letter is uppercase:
!Character.isUpperCase(fieldName.charAt(1))