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Java中log4j 的使用

package com.cn.test;

import java.util.concurrent.TimeUnit;

import org.apache.log4j.Level;
import org.apache.log4j.Logger;

public class Lo4jTest {

	/* Get actual class name to be printed on */
	static Logger log = Logger.getLogger(Lo4jTest.class.getName());

	public static void main(String[] args) throws InterruptedException {
		log.setLevel(Level.ALL);
		log.trace("Trace Message!");
		log.debug("Debug Message!");
		log.info("Info Message!");
		log.warn("Warn Message!");
		log.error("Error Message!");
		TimeUnit.SECONDS.sleep(5);
		log.fatal("Fatal Message!");
		
	}

}