The following sample program return true, but should return false.  Perhaps the 
escaped '.' is being interpreted unescaped and matching the 'x' in the str?

Sample program
--------------
import org.apache.regexp.*;

public class Test { 
  public static void main(String arg[]) {
    try {
      String pattern = ".*\\.";
      String str = ".x";
      RE re = new RE(pattern);
      System.out.println(re.match(str));        // should be false
    } catch(Exception e) {
      e.printStackTrace();
    }
  }
}