Shouldn't “static” patterns always be static?

Question

I just found a bug in some code I didn\'t write and I\'m a bit surprised:

Pattern pattern = Pattern.compile(\"\\\\d{1,2}.\\\\d{1,2}.\\\\d{4}\");
Matcher matc         


        

Answer 1

Static Patterns would remain in memory as long as the class is loaded.

If you are worried about memory and want a throw-away Pattern that you use once in a while and that can get garbage collected when you are finished with it, then you can use a non-static Pattern.