Log a message at a given level
@param level the log level, from 0 to 5, where 0 is "error" and 5 is "debug"
@param message Message being logged. null messages are not logged, however, zero-length stringsare.
All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.