how to configure apache log4j for gwt application

[peter tong]

I placed the log4j-1.2.16.jar under WEB-INF\llib\

in server code, I write the following

class DBConnection{
private static Logger logger = Logger.getLogger(DBConnection.class);

public static Connection getConnection(){

  PropertyConfigurator.configure("server_resources/log4j.properties");
 

then the console show error:

java.io.FileNotFoundException: server_resources\log4j.properties (the system cannot find the path specified)

how to make it found the log4j.properties?

I try to copy the server_resources/log4j.properties under web-inf and placed inside war, it is ok and no error, but I want it placed under WEB-inf, no method if placed under web-inf?