Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Java Java Objects Creating the MVP Scrabble Tiles

Sama Salim
Sama Salim
574 Points

How do I get the answer

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.

I am adding this to the method:

boolean isTile=tiles.indexOf(tile)!=-1; return true;

Can someone help me understand why it's not working?

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) {
    tiles += tile;

  }

  public boolean hasTile(char tile) {
   boolean isTile=tiles.indexOf(tile)!=-1;
   return true; 
  }

}

1 Answer

Your expression is true but ur being asked to return the result of the evaluation of the expression which means u need to write: return (write expression here); if it evaluates to true than the tile is exists in the tiles if it’s false then it’s not.

Sama Salim
Sama Salim
574 Points

Makes sense, many thanks!