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Java Java Objects (Retired) Creating the MVP Comparing Characters

Nathan Pickard
Nathan Pickard
10,950 Points
Posted by Nathan Pickard
Nathan Pickard
10,950 Points

Stumped on challenge

Not sure what to do differently to get the correct output. They ask : "I have modeled an assistant for a tech conference. Since there are so many attendees, registration is broken up into two lines. Lines are determined by last name, and they will end up in line 1 or line 2. Please help me fix the getLineFor method." NEW INFO: chars can be compared using the > and < symbols. For instance 'B' > 'A' and 'R' < 'Z'Thanks!

ConferenceRegistrationAssistant.java 
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 */
    if (lastName.charAt(0) <= 'M') {
      System.out.println("Line 1");
    } else {
      System.out.println("Line 2");
    }
    int line = 0;
    return line;
  }

}

2 Answers

Rob Bridges
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Rob Bridges
Full Stack JavaScript Techdegree Graduate 35,467 Points
Rob Bridges
.a{fill-rule:evenodd;}techdegree seal-36
Rob Bridges
Full Stack JavaScript Techdegree Graduate 35,467 Points

Hey there Nathan!

You're super close on this, just a few very minor things need to changed,

The first thing you want to do is your if statements are set up perfectly, after in the first one since we are checking if lastName.charAt(0) is greater than 'M', if it is than they should go to line 2, not one.

The other thing that needs to be corrected is change your System.out.println() statements to changing the value of your line variable, also be sure to that your int line = 0; declaration is at the top, so that both loops have an access to it.

It should look something like below

public class ConferenceRegistrationAssistant {

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

    return line;
  }

}

Thanks, don't hesitate to let me know if this doesn't help, and I'll look at what I can explain better.

David Gómez
David Gómez
4,389 Points
David Gómez
David Gómez
4,389 Points

Thanks for you two, I was having problems in this same challenge. I hadn't figured out I needed to add ".charAt(0)", then it worked. Instead of >= 'M' I wrote <'N'... less keys to press XD

Thanks!

Nathan Pickard
Nathan Pickard
10,950 Points
Nathan Pickard
Nathan Pickard
10,950 Points

I appreciate the help Rob! I changed the '>' to '<' and adjusted the 'int line = 0;' statement to the top. It's encouraging when you have people willing to provide such great help!