How do I check if the first letter is a 'm' or if the second letter is capitol?

Question

TeacherAssistant.java

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;
  }

}

Answer 1 · 2016-02-17T01:05:26Z

February 17, 2016 1:05am

This 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;
    }

}

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Shane May

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How do I check if the first letter is a 'm' or if the second letter is capitol?

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Geovanie Alvarez

Geovanie Alvarez

Shane May

Shane May