Getting numbers from within a string

Question

I am writing a Java hangman game where the user enters a letter guess and then guesses in which spaces the letter is in. For easy mode, the user can guess 4 spaces. The user must guess 4 spaces with a space between the numbers.

My question is, I have String guesses = keyboard.next(); but the issue I am having issue with is, how can I get the number that's at index 0, 2, 4, and 6? I am not allowed to use int space1 = keyboard.nextInt(); and so on. I have to use a string. So how can I extract the numbers at indices 0, 2, 4, and 6 from the string guesses?

P.S. I am not allowed to use arrays or the string builder class.

Have a look at String.substring docs.oracle.com/javase/7/docs/api/java/lang/… — NeplatnyUdaj
– NeplatnyUdaj, Commented Feb 26, 2015 at 22:13
Did you try anything? You wil have a much better chance of getting useful answers if you can provide some code that you have tried, together with a few comments on what isn't working. — Keppil
– Keppil, Commented Feb 26, 2015 at 22:13
Also, the code you gave would make more sense if you included some context. — Tripp Kinetics
– Tripp Kinetics, Commented Feb 26, 2015 at 22:15
HI Keppil, I would post some code but I am not allowed to post my code online per my class academic honesty policy. I have done quite a bit of research, but what I've found uses stuff I have not yet learned. Also, please don't post if it's not helpful. Thank you. — Johnny Appleseed
– Johnny Appleseed, Commented Feb 26, 2015 at 22:16
You're not allowed to share the code, but you can ask strangers to do the work for you? — NeplatnyUdaj
– NeplatnyUdaj, Commented Feb 26, 2015 at 22:17

JHH · Accepted Answer · 2015-02-26 22:25:58Z

2

Assuming for example

String s = "xx3x";

int j = s.charAt(2) - '0';

This gives j == 3.

answered Feb 26, 2015 at 22:25

JHH

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