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Java Java Objects (Retired) Creating the MVP Remaining Tries

Posted by Benjamin Lush
Benjamin Lush
2,707 Points

[SOLVED] What happens at this stage when you successfully guess the word?

I get a syntax error, for the loop exits only on a failure.

You have 3 tries left to solve: treehouse
Enter a letter:
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 0
at java.lang.String.charAt(String.java:646)
at Prompter.promptForGuess(Prompter.java:20)
at Prompter.play(Prompter.java:13)
at Hangman.main(Hangman.java:7)

Ricky Libby
Ricky Libby
1,664 Points
Ricky Libby
Ricky Libby
1,664 Points

While I'm not able to see your code, I'm going to take a crack at this...

It looks like the string you are using hasn't yet been initialized and in the following line I would imagine you are trying to use it?

Try initializing your string with a value:

String myString = "";

1 Answer

Benjamin Lush
Benjamin Lush
2,707 Points

It turns out that this error occurs in the next lesson and is addressed in the lesson after that:

When reading from console we can get a zero length string. So,

"Zero Length String".charAt(0);

Returns an unhandled exception. This was handled by checking the length of string when reading from console and raising a known exception if it is of zero length.

public boolean applyGuess(String letters) {

if (letters.length() == 0) {

throw new IllegalArgumentsException("No letter(s) found!");

}

char firstLetter = letters.charAt(0);

return applyGuess(firstLetter);

}