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 (Retired) Creating the MVP Strings and Chars

Antone Bagnall
Antone Bagnall
6,744 Points

hasTile method error. When I run the program there is a compiler error in my hasTile method

I think i may be calling the "IndexOf" method wrongly? Any help would be greatly appreciated! Thanks.

ScrabblePlayer.java
public class ScrabblePlayer {
    private String mHand;

    public ScrabblePlayer() {
        mHand = "";
    }

    public String getHand() {
       return mHand;
    }

    public void addTile(char tile) {
        // Adds the tile to the hand of the player
      mHand += tile;

    }

    public boolean hasTile(char tile) {
      boolean verdict;

      if(mHand.IndexOf(tile) >= 0) {
      verdict = true;
      }

      else {
      verdict = false;
      }

      return verdict;
    }
}

1 Answer

Hi there,

You're not far off at all. Lose the capital i at the start of indexOf. It is lower case. And that's it; your code will now pass. However, the code can be simplified.

My solution looked like:

public boolean hasTile(char tile) {
  if(mHand.indexOf(tile) >= 0) {
    return true;
  } else {
    return false;
  }
}

which does exactly the same thing without using an interim boolean variable. But that can be simplified still further with this:

public boolean hasTile(char tile) {
  return mHand.indexOf(tile) >= 0
}

The mHand expression can only result in a true or false answer. The if statement adds some clarity, perhaps, but it isn't needed.

I hope that helps.

Steve.

Antone Bagnall
Antone Bagnall
6,744 Points

Great! Thanks for your help :)