Help with charAt()

**HackerOfDoom** · 03-21-2010, 03:56 PM

Hi everyone, I have looked and really need help with my specific problem.
My code is as follows:

int counter;
for (counter = 0; counter < phrase.length(); counter++);
{
int p = counter;
int shiftNum = Integer.parseInt(shift.trim());

System.out.print("\n" + phrase.charAt(p)+ shiftNum);
}

My variables are all accounted for and there are no errors in the code, but i keep getting this error message:

Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 5
at java.lang.String.charAt(Unknown Source)
at Crypto.main(Crypto.java:49)

Thanks in advance!

**JosAH** · 03-21-2010, 04:02 PM

Originally Posted by HackerOfDoom

Hi everyone, I have looked and really need help with my specific problem.
My code is as follows:

for (counter = 0; counter < phrase.length(); counter++);

What is that semicolon doing there at the end of the line? Get rid of it.

kind regards,

Jos

**HackerOfDoom** · 03-21-2010, 04:08 PM

Thanks for your reply, It totally worked (and I deleted the "\n" lol, because it was printing on separate lines). Another question I have about this project is that I ask the user to enter input without spaces, is there any way for the .length() command to omit spaces in its calculation?
Thanks again

**HackerOfDoom** · 03-21-2010, 04:10 PM

Nevermind, turns out the space bar has an ascii value.

**Fubarable** · 03-21-2010, 04:12 PM

Java Code:

int lengthWithoutSpaces = myString.removeAll(" ").length();

**HackerOfDoom** · 03-21-2010, 04:17 PM

Ok I'll make sure to use the tags next time. Also, since my real point in this program is encryption/decryption for a school thing, I decided to leave in the spaces because they have an ascii value after all, so we can add numbers to the ascii value, then translate it back with (char). I got the idea from hackthissite.org, because they do something with ascii values that I am just realizing I could have used a program to solve. Anyway, thanks a bunch....