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1   /**
2    * Logback: the reliable, generic, fast and flexible logging framework.
3    * Copyright (C) 1999-2009, QOS.ch. All rights reserved.
4    *
5    * This program and the accompanying materials are dual-licensed under
6    * either the terms of the Eclipse Public License v1.0 as published by
7    * the Eclipse Foundation
8    *
9    *   or (per the licensee's choosing)
10   *
11   * under the terms of the GNU Lesser General Public License version 2.1
12   * as published by the Free Software Foundation.
13   */
14  package chapter5;
15  
16  import org.slf4j.Logger;
17  import org.slf4j.LoggerFactory;
18  
19  import ch.qos.logback.classic.LoggerContext;
20  import ch.qos.logback.classic.joran.JoranConfigurator;
21  import ch.qos.logback.core.joran.spi.JoranException;
22  import ch.qos.logback.core.util.StatusPrinter;
23  
24  public class CallerEvaluatorExample {
25  
26    public static void main(String[] args)  {
27      Logger logger = LoggerFactory
28          .getLogger(CallerEvaluatorExample.class);
29      LoggerContext lc = (LoggerContext) LoggerFactory.getILoggerFactory();
30  
31      try {
32        JoranConfigurator configurator = new JoranConfigurator();
33        configurator.setContext(lc);
34        lc.reset();
35        configurator.doConfigure(args[0]);
36      } catch (JoranException je) {
37        StatusPrinter.print(lc);
38      }
39  
40      for (int i = 0; i < 5; i++) {
41        if (i == 3) {
42          logger.debug("who calls thee?");
43        } else {
44          logger.debug("I know me " + i);
45        }
46      }
47    }
48  }