Java之Logger日誌（Java8特性）

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 1 import java.util.logging.Level; 2 import java.util.logging.Logger; 3  4 public class LoggingDemo { 5     public static final Logger logger = Logger.getLogger("LoggingDemo.class"); 6  7     public static void main(String args[]) { 8         Level level = Level.parse("FINEST"); 9         logger.info(level.toString());10 11         //下面的訊息將被輸出12         logger.setLevel(level);13         logger.info("this is an info");14         logger.warning("this is a warn");15         logger.severe("this is a severe");16 //        logger.config("config");17 //        logger.fine("fine");18 //        logger.finer("finer");19 //        logger.finest("finest");20 21         logger.info("LoggerName: " + logger.getName());22         logger.info("LoggerLevelName: " + logger.getLevel().getName());23 24     }25 }

運行結果：

五月 23, 2018 5:13:24 下午 org.study2.java8.logging.LoggingDemo main資訊: FINEST五月 23, 2018 5:13:24 下午 org.study2.java8.logging.LoggingDemo main資訊: this is an info五月 23, 2018 5:13:24 下午 org.study2.java8.logging.LoggingDemo main警告: this is a warn五月 23, 2018 5:13:24 下午 org.study2.java8.logging.LoggingDemo main嚴重: this is a severe五月 23, 2018 5:13:24 下午 org.study2.java8.logging.LoggingDemo main資訊: LoggerName: LoggingDemo.class五月 23, 2018 5:13:24 下午 org.study2.java8.logging.LoggingDemo main資訊: LoggerLevelName: FINEST

 

Java之Logger日誌（Java8特性）