java strings letters only

Sure!!! Just make a for cycle and use the .charAt function o fthe String class to add to a new String everithing that is not a space or a punctuation sign, which could be easily done with the indexOf function. All you have to do is a little investigation about how this functions work. I won't tell you becouse it would be to give you the whole solutions without you to make any effort... sorry.

Metallana at 2007-7-15 18:15:20 >

String aString = "This is the string you are editing.";

StringBuffer sb = new StringBuffer(aString);

for (int i = 0; i < sb.length(); i++) {

if (Character.isLetter(sb.charAt(i))) {

continue;

} else {

sb.deleteCharAt(i);

i--;

}

}

// Change original to the new edited version.

aString = sb.toString();

kablaira at 2007-7-15 18:15:20 >

> Sure!!! Just make a for cycle and use the .charAt

> function o fthe String class to add to a new String

> everithing that is not a space or a punctuation sign,

> which could be easily done with the indexOf function.

> All you have to do is a little investigation about

> how this functions work. I won't tell you becouse it

> would be to give you the whole solutions without you

> to make any effort... sorry.

In a word: no.

That would require you to either hard code editing out everything you don't consider a letter by searching for it, or hard code what you do consider a letter. What happens if you miss a punctuation character in your code? Oops, rewrite, recompile, redistribute. What happens if you want to use it in another language you didn't hard code it for? Oops. Rewrite, recompile, restribute. Java provides functions like Character.isLetter() for a reason.

To the original author: using Character.isLetter(int) would be preferable to Character.isLetter(char) as the latter can't handle supplementary characters.I used it to keep it easier to understand, but if your program is faced with the prospect of handling supplemental characters you should look at the Character API and change it to use the other.

kablaira at 2007-7-15 18:15:20 >

> Man, you're telling him EVERITHING!!! Let him do some

> research, it could be a homework or something...

I would prefer to offer a solution with an OO approach so they can learn. Yes, I could spend a great deal more time explaining to them how to go about it without showing him the actual code, but that quickly becomes so confusing as to be worthless. I'd prefer to think that they'll analyze the code and understand it, which is the real value of any assignment. If they just copy and paste it will catch up to them one way or another and it will be their problem to deal with when it does.

kablaira at 2007-7-15 18:15:20 >