Best way to replace string in substring?

Java newbie here. I wish to open an html document and search for kewords which are to be replaced with other values.

I checked out the String.replace() function which only works on characters. Is there another function I can use? I thought about trying to learn the regular expression functions to do it.

Can anyone point me in the right direction?

I figured it out, as follows:

String htmlDoc = "<input name=cmName type=text value=__cmName__>";
String oldString = "__cmName__";
String newString = "Joel Nelson";

int htmlLength = htmlDoc.length();
int oldLength = oldString.length();
int index = htmlDoc.indexOf(oldString.toString());

if (index != -1) {
htmlDoc = htmlDoc.substring (0, index) + newString.toString() + htmlDoc.substring (index + oldLength, htmlLength);
}

Well, if you have access to jdk 1.4, go ahead and learn the regular expression functions. They're not very difficult, and they're *extremely* useful.

One suggestion that I might make to your code is to put it into a loop. That way all occurence get replaced, not just the first.

Good point on the looping, bricker!

I actually do know regular expressions, but via perl (my main language). I'm sure there are some differences in usage but they prolly work about the same. I'll check it out!

yah that works.. and you dont need toString() for all the strings it is default