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Java Java Objects (Retired) Creating the MVP For Each Loop

Whitney Barber
Whitney Barber
9,453 Points
Posted by Whitney Barber
Whitney Barber
9,453 Points

I'm not having any success with correcting the errors found in my scrabble player code, please assist.

MY CODE

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) { return mHand.indexOf(tile) > -1; }

public String getTileCount() { String count = ""; for (char tile : mHand.toCharArray()) { char display = '_'; if (mHand.indexOf(letter) >= 0) { display = letter; } progress += display; } return progress; } }

ERROR MESSAGE

./ScrabblePlayer.java:25: error: cannot find symbol if (mHand.indexOf(letter) >= 0) { ^ symbol: variable letter location: class ScrabblePlayer ./ScrabblePlayer.java:26: error: cannot find symbol display = letter; ^ symbol: variable letter location: class ScrabblePlayer ./ScrabblePlayer.java:28: error: cannot find symbol progress += display; ^ symbol: variable progress location: class ScrabblePlayer ./ScrabblePlayer.java:30: error: cannot find symbol return progress; ^ symbol: variable progress location: class ScrabblePlayer 4 errors

3 Answers

Ken Alger
STAFF
Ken Alger
Treehouse Teacher
Ken Alger
Ken Alger
Treehouse Teacher

Whitney;

I don't see where you have initialized letter or progress. I think we are trying to do something like:

public int getTileCount(char tileToFind) {
    int tileCount = 0;
    for (char searchingTile : mHand.toCharArray()) {
      if (searchingTile == tileToFind) {
        tileCount++;
      }
    }
    return tileCount;
}

Does that make any sense? Post back if you are still stuck or the above code doesn't make sense.

Happy coding,
Ken

Whitney Barber
Whitney Barber
9,453 Points
Whitney Barber
Whitney Barber
9,453 Points

I don't understand why searchingFile which is the amount of characters found in mHand matching tileToFind increments the tileCount.

Ken Alger
Ken Alger
Treehouse Teacher
Ken Alger
Ken Alger
Treehouse Teacher

Whitney;

Great question.

That for loop is going through each "tile" in mHand, right? Then in the if statement we look to see if the requested tile is in mHand, if it is we increment tileCount. So, if our hand has 3 of the letter "t", and we do getTileCount(t), we should expect our method to return 3. Does that help?

Ken

Whitney Barber
Whitney Barber
9,453 Points
Whitney Barber
Whitney Barber
9,453 Points

Yes, your explanation is a huge help. Thanks again Ken!