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Java example source code file (

This example Java source code file ( is included in the "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

entering, exception, exiting, here, integer, log4j13calls, logger, number, testcase, the, trace, violets

The Java example source code

 * Logback: the reliable, generic, fast and flexible logging framework.
 * Copyright (C) 1999-2006,
 * This library is free software, you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation.

package test;

import junit.framework.TestCase;

import org.apache.log4j.Logger;
import org.apache.log4j.MDC;

 * A test case that issues the typical calls
 * that an application using log4j 1.3 would do.
 * @author Ceki Gülcü
 * @author Sébastien Pennec

public class Log4j13Calls extends TestCase {
  public static final Logger logger = Logger.getLogger(Log4j12Calls.class);
  public void testLog() {
    MDC.put("key", "value1");
    logger.trace("Trace level can be noisy");
    logger.debug("Entering application");"Violets are blue");
    logger.warn("Here is a warning");"The answer is {}.", new Integer(42));"Number: {} and another one: {}.", new Integer(42), new Integer(24));
    logger.error("Exiting application", new Exception("just testing"));

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