Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Java Java Objects Creating the MVP Conference Registration Assistant

David Carlson
David Carlson
564 Points
Posted by David Carlson
David Carlson
564 Points

Can't figure out the Challenge.

Can somebody explain what I'm supposed to do in the challenge??

Gabe Olesen
Gabe Olesen
1,606 Points
Gabe Olesen
Gabe Olesen
1,606 Points

Can you post the code please?

Steve Hunter
Steve Hunter
57,712 Points

Gabe,

You can click the 'View Challenge' button, top-right, to see the code challenge.

Steve.

2 Answers

Steve Hunter
Steve Hunter
57,712 Points
Steve Hunter
Steve Hunter
57,712 Points

Hi David,

For this, you need to use the lastName parameter passed into the method, getLineNumberFor(), and test its first character to see if it is within A & M or not. If the former, set lineNumber to 1, else set it to 2.

I suggest investigating the charAt() method for use on the lastName string. That will give you the first character if you use it right. Then, you want an if/else conditional test should allow you to set the lineNumber to either possible outcome. Then return that outcome.

Does that help?

Steve.

David Carlson
David Carlson
564 Points
David Carlson
David Carlson
564 Points

It clears up what I'm supposed to do, but what I don't understand is how to program it. If you could show me what to put and then explain what the code is doing that would solve my problems! Thanks so much!

David.

Steve Hunter
Steve Hunter
57,712 Points

I'm not going to stick a load of code here to solve the challenge but I am happy to look at your code and work through any issues. I'm sure you do know how to get through the code challenge so give it a go, post your code and I'll take you through any issues that throws up.

I've given you some pointers in the answer above, so have a play with those and keep hitting the Preview button to see if there's any errors. Do a bit of Googling to fix those errors and if you get nowhere, come back here with your code and I'll help in more detail.

It's 01:18 here now, so I'm off to sleep. Good luck; keep going; keep trying.

Let me know how you get on.

Steve.

David Carlson
David Carlson
564 Points
David Carlson
David Carlson
564 Points

Hi Steve, Quick question..... should I use the whole "scanner" deal he used in the video? Or just the char.At ()?

Steve Hunter
Steve Hunter
57,712 Points

Hi David,

I don't think you need a Scanner instance - we're not taking user input here. The method receives the lastName as a parameter so where that came from isn't our concern here.

I'd take that parameter, get its first character with .charAt(0) and test it for being less than 'N' (or less than or equal to 'M') and set lineNumber depending on the result of that test.

Make sense?

Steve.