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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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;
import org.apache.log4j.Logger;
import org.apache.log4j.BasicConfigurator;
import org.apache.log4j.NDC;
/**
View the <a href="doc-files/Trivial.java">source code</a> of this a
trivial usage example. Running <code>java examples.Trivial</code>
should output something similar to:
<pre>
0 INFO [main] examples.Trivial (Client #45890) - Awake awake. Put on thy strength.
15 DEBUG [main] examples.Trivial (Client #45890 DB) - Now king David was old.
278 INFO [main] examples.Trivial$InnerTrivial (Client #45890) - Entered foo.
293 INFO [main] examples.Trivial (Client #45890) - Exiting Trivial.
</pre>
<p> The increasing numbers at the beginning of each line are the
times elapsed since the start of the program. The string between
the parentheses is the nested diagnostic context.
<p>See {@link Sort} and {@link SortAlgo} for sligtly more elaborate
examples.
<p>Note thent class files for the example code is not included in
any of the distributed log4j jar files. You will have to add the
directory <code>/dir-where-you-unpacked-log4j/classes</code> to
your classpath before trying out the examples.
*/
public class Trivial {
static Logger logger = Logger.getLogger(Trivial.class);
public static void main(String[] args) {
BasicConfigurator.configure();
NDC.push("Client #45890");
logger.info("Awake awake. Put on thy strength.");
Trivial.foo();
InnerTrivial.foo();
logger.info("Exiting Trivial.");
}
static
void foo() {
NDC.push("DB");
logger.debug("Now king David was old.");
NDC.pop();
}
static class InnerTrivial {
static Logger logger = Logger.getLogger(InnerTrivial.class);
static
void foo() {
logger.info("Entered foo.");
}
}
}
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