import java.util.logging.Logger; ……… Logger log

题目

import java.util.logging.Logger; ……… Logger log
import java.util.logging.Logger; ……… Logger log=Logger.getLogger(A.class.getName()); log.debug(msg); 它说the method debug(String) is undefined for the type Logger debug下面有波浪线.

答案

　　把
　　import java.util.logging.Logger
　　换成试试
　　import org.apache.log4j.Logger;