1.程序

package com.zhiyou100;

import java.util.logging.Level;

import java.util.logging.Logger;

public class Java4J {     public static Logger log = Logger.getLogger(Java4J.class.getName());

    public static void main(String[] args) {

        // 记录info级别的信息         log.info("This is info message.");         log.warning("This is warning message.");         log.log(Level.OFF, "This is error message.");

    }

}

2.运行结果

十一月 16, 2016 12:51:59 下午 com.zhiyou100.Java4J main

信息: This is info message. 十一月 16, 2016 12:51:59 下午 com.zhiyou100.Java4J main 警告: This is warning message. 十一月 16, 2016 12:51:59 下午 com.zhiyou100.Java4J main 禁用: This is error message.