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!

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

giuseppe prinno
giuseppe prinno
5,060 Points

Can't figure this out!!

Please help, I've tried but it just seems that nothing works, I didn't quite get how to use this (IndexOf)

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 isHit = tile.indexOf(tiles) != -1;
      if (isHit){
        tiles += tile;
      }return isHit;



1 Answer

Antonio De Rose
Antonio De Rose
20,883 Points

this way, the tiles string is checked, against the character in tile, given the character in tile is available in the string tiles, it would send the index position of the string tiles, for the character tile, provided the character isn't there in the string, it would return a -1

return tiles.indexOf(tile) >= 0;