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Java example source code file (StaticLoggerBinder.java)

This example Java source code file (StaticLoggerBinder.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

iloggerfactory, loggerfactorybinder, requested_api_version, singleton, staticloggerbinder, string

The StaticLoggerBinder.java Java example source code

/**
 * Copyright (c) 2004-2011 QOS.ch
 * All rights reserved.
 *
 * Permission is hereby granted, free  of charge, to any person obtaining
 * a  copy  of this  software  and  associated  documentation files  (the
 * "Software"), to  deal in  the Software without  restriction, including
 * without limitation  the rights to  use, copy, modify,  merge, publish,
 * distribute,  sublicense, and/or sell  copies of  the Software,  and to
 * permit persons to whom the Software  is furnished to do so, subject to
 * the following conditions:
 *
 * The  above  copyright  notice  and  this permission  notice  shall  be
 * included in all copies or substantial portions of the Software.
 *
 * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
 * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
 * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */
package org.slf4j.impl;

import org.slf4j.ILoggerFactory;
import org.slf4j.LoggerFactory;
import org.slf4j.spi.LoggerFactoryBinder;

/**
 * The binding of {@link LoggerFactory} class with an actual instance of 
 * {@link ILoggerFactory} is performed using information returned by this class. 
 * 
 * @author Ceki Gülcü
 */
public class StaticLoggerBinder implements LoggerFactoryBinder {

    /**
     * The unique instance of this class.
     * 
     */
    private static final StaticLoggerBinder SINGLETON = new StaticLoggerBinder();

    /**
     * Return the singleton of this class.
     * 
     * @return the StaticLoggerBinder singleton
     */
    public static final StaticLoggerBinder getSingleton() {
        return SINGLETON;
    }

    /**
     * Declare the version of the SLF4J API this implementation is compiled against. 
     * The value of this field is modified with each major release. 
     */
    // to avoid constant folding by the compiler, this field must *not* be final
    public static String REQUESTED_API_VERSION = "1.6.99"; // !final

    private static final String loggerFactoryClassStr = org.slf4j.impl.JDK14LoggerFactory.class.getName();

    /** The ILoggerFactory instance returned by the {@link #getLoggerFactory} method
     * should always be the same object
     */
    private final ILoggerFactory loggerFactory;

    private StaticLoggerBinder() {
        // Note: JCL gets substituted at build time by an appropriate Ant task
        loggerFactory = new org.slf4j.impl.JDK14LoggerFactory();
    }

    public ILoggerFactory getLoggerFactory() {
        return loggerFactory;
    }

    public String getLoggerFactoryClassStr() {
        return loggerFactoryClassStr;
    }
}

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