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Java example source code file (LogManager.java)

This example Java source code file (LogManager.java) is included in the alvinalexander.com "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

class, enumeration, logger, loggerfactory, logmanager, string, suppresswarnings, util

The LogManager.java Java example source code

/*
 * Copyright 2001-2004 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;

import org.apache.log4j.spi.LoggerFactory;

import java.util.Enumeration;
import java.util.Vector;

/**
 * <p/>
 * This class is a minimal implementation of the original
 * <code>org.apache.log4j.LogManager class (as found in log4j 1.2)
 * delegating all calls to SLF4J.
 * <p/>
 * <p/>
 * This implementation does <b>NOT implement the setRepositorySelector(),
 * getLoggerRepository(), exists(), getCurrentLoggers(), shutdown() and
 * resetConfiguration() methods which do not have SLF4J equivalents.
 *
 * @author Ceki Gülcü
 */
@SuppressWarnings("rawtypes")
public class LogManager {

    public static Logger getRootLogger() {
        return Log4jLoggerFactory.getLogger(org.slf4j.Logger.ROOT_LOGGER_NAME);
    }

    public static Logger getLogger(final String name) {
        return Log4jLoggerFactory.getLogger(name);
    }

    public static Logger getLogger(final Class clazz) {
        return Log4jLoggerFactory.getLogger(clazz.getName());
    }

    /**
     * Returns a logger instance created by loggerFactory. This method was requested in
     * <a href="http://jira.qos.ch/browse/SLF4J-225">SLF4J-225. Note that
     * log4j-over-slf4j does not ship with a LoggerFactory implementation. If this
     * method is called, the caller must provide his/her own implementation.
     *
     * @param name          the name of the desired logger
     * @param loggerFactory an instance of {@link LoggerFactory}
     * @return returns a logger instance created by loggerFactory
     * @since 1.6.6
     */
    public static Logger getLogger(String name, LoggerFactory loggerFactory) {
        return loggerFactory.makeNewLoggerInstance(name);
    }

    /**
     * This bogus implementation returns an empty enumeration.
     *
     * @return
     */
    public static Enumeration getCurrentLoggers() {
        return new Vector().elements();
    }

    /**
     * Implemented as NOP.
     */
    public static void shutdown() {
    }

    /**
     * Implemented as NOP.
     */
    public static void resetConfiguration() {
    }
}

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