java Logger设置LogLevel例子，loggerloglevel,package cn.o

java Logger设置LogLevel例子，loggerloglevel,package cn.o

package cn.outofmemory.snippets.core;import java.util.logging.Logger;import java.util.logging.Level;public class LogLevelExample {    // Create logger instance    private static Logger logger = Logger.getLogger(LogLevelExample.class.getName());    public static void main(String[] args) {        // Set the log level to Level.INFO        logger.setLevel(Level.INFO);        logger.severe("This message will be logged.");        // Set the log level to Level.SEVERE        logger.setLevel(Level.SEVERE);        logger.warning("This message won't be logged.");        // Turn of the log        logger.setLevel(Level.OFF);        logger.info("All log is turned off.");        // Turn the logger on        logger.setLevel(Level.ALL);        logger.info("Information message.");        logger.warning("Warning message.");        logger.severe("Severe message.");    }}

输出：

Αυγ 12, 2012 1:03:32 ΜΜ com.javacodegeeks.snippets.core.LogLevelExample mainSEVERE: This message will be logged.Αυγ 12, 2012 1:03:32 ΜΜ com.javacodegeeks.snippets.core.LogLevelExample mainINFO: Information message.Αυγ 12, 2012 1:03:32 ΜΜ com.javacodegeeks.snippets.core.LogLevelExample mainWARNING: Warning message.Αυγ 12, 2012 1:03:32 ΜΜ com.javacodegeeks.snippets.core.LogLevelExample mainSEVERE: Severe message