3. log4j的Hello World 程序源代码
package com.sinosuperman.log4j;import org.apache.log4j.BasicConfigurator;import org.apache.log4j.Logger;public class Test {private static final Logger logger = Logger.getLogger(Test.class);public static void main(String[] args) {BasicConfigurator.configure();logger.info("Hello World, This is an information message.");logger.error("Hello World, This is a error message.");logger.warn("Hello World, This is a warning message.");logger.debug("Hello World, This is a debugging message.");logger.fatal("Hello World, This is a fatal message.");System.exit(0);}}
4. log4j的Hello World 程序运行结果1 [main] INFO com.sinosuperman.log4j.Test - Hello World, This is an information message.3 [main] ERROR com.sinosuperman.log4j.Test - Hello World, This is a error message.3 [main] WARN com.sinosuperman.log4j.Test - Hello World, This is a warning message.3 [main] DEBUG com.sinosuperman.log4j.Test - Hello World, This is a debugging message.3 [main] FATAL com.sinosuperman.log4j.Test - Hello World, This is a fatal message.