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 Scrabble Tiles

What am I supposed to put before the +=?

Task:

Okay great, now can you fix the hasTile method for me, right now it always returns false.

Correct the existing hasTile method to return true if the tile is in the tiles field, and false if it isn't. You can solve this a few ways, however, I'd like you to practice returning the result of the expression that uses the index of a char in a String.

My code is down below. What am I supposed to put before both += tile (near at the bottom of the code).

Please help!

ScrabblePlayer.java
public class ScrabblePlayer {
  // A String representing all of the tiles that this player has
  private String tiles;

  public ScrabblePlayer() {
    tiles = "";
  }

  public String getTiles() {
    return tiles;
  }

  public void addTile(char tile) {
    // TODO: Add the tile to tiles
      tiles += tile;
  }

  public boolean hasTile(char tile) {
    // TODO: Determine if user has the tile passed in
    boolean tile = tiles.indexOf(tile) != -1;
    if (tile) {
      += tile;
    } else {
      += tile;
    }
    return tile;
  }

}

2 Answers

Justin Horner
STAFF
Justin Horner
Treehouse Guest Teacher

Hello Tianerad,

You're really close to getting this one! I think we can greatly simplify the implementation of hasTile.

Your first line of code that declares and sets the tile variable to the index of the tile character is all you need to return whether or not the tile parameter value is contained within the tiles string.

To simplify it, I would recommend returning that boolean value. You could shorten it to something like this.

  public boolean hasTile(char tile) {
    return tiles.indexOf(tile) > -1;
  }
}

I hope this helps.

Ok, thanks a lot! :)