/* * 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 org.apache.log4j.xml.examples;import org.apache.log4j.xml.DOMConfigurator;import org.apache.log4j.Logger;import java.net.*;/**   This <a href="XMLSample.java">example code</a> shows how to   read an XML based configuration file using a DOM parser.   <p>Sample XML files <a href="sample1.xml">sample1.xml</a>   and <a href="sample2.xml">sample2.xml</a> are provided.   <p>Note that the log4j.dtd is not in the local directory.   It is found by the class loader.   @author Ceki G&uuml;lc&uuml;*/public class XMLSample {  static Logger cat = Logger.getLogger(XMLSample.class);  public  static  void main(String argv[]) {    if(argv.length == 1)      init(argv[0]);    else      Usage("Wrong number of arguments.");    sample();  }  static  void Usage(String msg) {    System.err.println(msg);    System.err.println( "Usage: java " + XMLSample.class.getName() +			"configFile");    System.exit(1);  }  static  void init(String configFile) {    DOMConfigurator.configure(configFile);  }  static  void sample() {    int i = -1;    Logger root = Logger.getRootLogger();    cat.debug("Message " + ++i);    cat.warn ("Message " + ++i);    cat.error("Message " + ++i);    Exception e = new Exception("Just testing");    cat.debug("Message " + ++i, e);  }}