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Java Java Objects (Retired) Creating the MVP Comparing Characters

Alexander Nowak
Alexander Nowak
498 Points
Posted by Alexander Nowak
Alexander Nowak
498 Points

Comparing characters challenge

Hi, I am having trouble sorting the people into two lines by comparing there last name to then determine which line they go in.

Thanks!

ConferenceRegistrationAssistant.java 
public class ConferenceRegistrationAssistant {

  public int getLineFor(String lastName) {
    lastName = console.readLine("Enter your last name")
    char firstLetter = lastName.charAt(0);
    if (firstLetter) {



    /* If the last name is between A thru M send them to line 1
       Otherwise send them to line 2 */
    int line = 0;
    return line;
  }

}

1 Answer

Kevin Faust
Kevin Faust
15,353 Points
Kevin Faust
Kevin Faust
15,353 Points

Hey Alexander,

Firstly, we do not prompt for a lastname within the method. A lastname string will already be passed in for us. All we have to do is check if the letter is less than 'N'

int line=0 should be the first line in our method as everything we will do in the code will manipulate that number

we then do a simple if statement. you got the charAt(0) part correct. All you have to do is check if the charAt(0) is less than the letter 'N' aka letters 'A through M'. If it is indeed less than 'N' we put them in line 1. otherwise we put them in line 2. I have attached the solution below as reference in case your still stuck

public class ConferenceRegistrationAssistant {

  public int getLineFor(String lastName) {
    /* If the last name is between A thru M send them to line 1
       Otherwise send them to line 2 */
    int line = 0;
        if (lastName.charAt(0) < 'N') {
         line = 1; 
        } else {
         line = 2; 
        }
    return line;
  }

}

Happy coding and best of luck,

Kevin

Alexander Nowak
Alexander Nowak
498 Points
Alexander Nowak
Alexander Nowak
498 Points

Hi Kevin, thanks again!!

what does int line = 0; mean/do?

Kevin Faust
Kevin Faust
15,353 Points
Kevin Faust
Kevin Faust
15,353 Points

Hey Alexander,

Its basically just a placeholder value. Its just an empty int variable and through our code we will either add 1 or 2 to it depending on the last nam and then we return that value.

Kevin