/* * Copyright 1999-2005 The Apache Software Foundation. *  * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at *  *      http://www.apache.org/licenses/LICENSE-2.0 *  * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package examples.lf5.InitUsingLog4JProperties;import org.apache.log4j.Logger;import java.io.IOException;/** * This class is a simple example of how to use the LogFactor5 logging * window. * * The LF5Appender is the primary class that enables logging to the * LogFactor5 logging window. The simplest method of using this Appender * is to add the following line to your log4j.properties file: * *    log4j.appender.A1=org.apache.log4j.lf5.LF5Appender * * The log4j.properties file MUST be in you system classpath. If this file * is in your system classpath, a static initializer in the Category class * will load the file during class initialization. The LF5Appender will be * added to the root category of the Category tree. * * Create a log4j.properties file and add this line to it, or add this line * to your existing log4j.properties file. Run the example at the command line * and explore the results! * * @author Brent Sprecher */// Contributed by ThoughtWorks Inc.public class InitUsingLog4JProperties {    //--------------------------------------------------------------------------    //   Constants:    //--------------------------------------------------------------------------    //--------------------------------------------------------------------------    //   Protected Variables:    //--------------------------------------------------------------------------    //--------------------------------------------------------------------------    //   Private Variables:    //--------------------------------------------------------------------------    private static Logger logger =            Logger.getLogger(InitUsingLog4JProperties.class);    //--------------------------------------------------------------------------    //   Constructors:    //--------------------------------------------------------------------------    //--------------------------------------------------------------------------    //   Public Methods:    //--------------------------------------------------------------------------    public static void main(String argv[]) {        // Add a bunch of logging statements ...        logger.debug("Hello, my name is Homer Simpson.");        logger.debug("Hello, my name is Lisa Simpson.");        logger.debug("Hello, my name is Marge Simpson.");        logger.debug("Hello, my name is Bart Simpson.");        logger.debug("Hello, my name is Maggie Simpson.");        logger.info("We are the Simpsons!");        logger.info("Mmmmmm .... Chocolate.");        logger.info("Homer likes chocolate");        logger.info("Doh!");        logger.info("We are the Simpsons!");        logger.warn("Bart: I am through with working! Working is for chumps!" +                "Homer: Son, I'm proud of you. I was twice your age before " +                "I figured that out.");        logger.warn("Mmm...forbidden donut.");        logger.warn("D'oh! A deer! A female deer!");        logger.warn("Truly, yours is a butt that won't quit." +                "- Bart, writing as Woodrow to Ms. Krabappel.");        logger.error("Dear Baby, Welcome to Dumpsville. Population: you.");        logger.error("Dear Baby, Welcome to Dumpsville. Population: you.",                new IOException("Dumpsville, USA"));        logger.error("Mr. Hutz, are you aware you're not wearing pants?");        logger.error("Mr. Hutz, are you aware you're not wearing pants?",                new IllegalStateException("Error !!"));        logger.fatal("Eep.");        logger.fatal("Mmm...forbidden donut.",                new SecurityException("Fatal Exception"));        logger.fatal("D'oh! A deer! A female deer!");        logger.fatal("Mmmmmm .... Chocolate.",                new SecurityException("Fatal Exception"));    }    //--------------------------------------------------------------------------    //   Protected Methods:    //--------------------------------------------------------------------------    //--------------------------------------------------------------------------    //   Private Methods:    //--------------------------------------------------------------------------    //--------------------------------------------------------------------------    //   Nested Top-Level Classes or Interfaces:    //--------------------------------------------------------------------------}