Are regular expressions limited

Question

hey
I tried this
public class Main
     public static void main(String[] args)
          String string = "ksjdfjk_kjsdfjk_jkfsdjkf";
          boolean match = string.contains("_.+_");
          if(match == true)
               System.out.println("worked");
          else
               System.out.println("not worked");
}but I keep getting "not worked"
Are regular expressions limited or is there a way
to set dot "." to any character but "_";
I'm trying to get the program
to detect anycharacters
out of anycharacters_anycharacters_anycharacters

Answer 1

Here's a solution for anyone
searching the forums.
public class Main
     public static void main(String[] args)
          String string = "ksjdfjk_sdfsdfdsf_jkfsdjkf";
          boolean match = string.matches(".*_.+_.*");
          if(match == true)
               System.out.println("worked");
          else
               System.out.println("not worked");
}Thanks for the quick replies. :)