regular expressions in java

I'm passing in the PATH environment variable into my java program and I want to compare every entry in the PATH variable to the regular expression *j2sdk* to find out where the jdk is located on the user's machine. However, I don't understand how to do regular expressions in java despite reading the documentation on it. My code is like this:

Pattern p = Pattern.compile("\\wj2sdk\\w");
Matcher m = p.matcher(temp);

Help please.

"temp" above is of course one of the entries in from the PATH environment variable that I'm using for the comparison

I figured out the solution if I'm trying to match any string containing the string "j2sdk" using regular expressions

Pattern p = Pattern.compile("(\\w|\\W)*j2sdk(\\w|\\W)*");

Yeah, it's nasty isn't it? That's how you do it though.