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The Apache Commons Codec package contains simple encoder and decoders for various formats such as Base64 and Hexadecimal. In addition to these widely used encoders and decoders, the codec package also maintains a collection of phonetic encoding utilities.

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/*   Copyright 2017, 2018 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.xmlbeans.impl.common;

/**
 * A logger class that strives to make it as easy as possible for
 * developers to write log calls, while simultaneously making those
 * calls as cheap as possible by performing lazy evaluation of the log
 * message.
 */
public class NullLogger extends XBLogger {
    @Override
    public void initialize(final String cat) {
       // do nothing
    }

    /**
     * Log a message
     *
     * @param level One of DEBUG, INFO, WARN, ERROR, FATAL
     * @param obj1 The object to log.
     */

    @Override
    protected void _log(final int level, final Object obj1) {
        // do nothing
    }

    /**
     * Log a message
     *
     * @param level One of DEBUG, INFO, WARN, ERROR, FATAL
     * @param obj1 The object to log.  This is converted to a string.
     * @param exception An exception to be logged
     */
    @Override
    protected void _log(int level, Object obj1, final Throwable exception) {
        // do nothing
    }

    /**
     * Log a message. Lazily appends Object parameters together.
     * If the last parameter is a {@link Throwable} it is logged specially.
     *
     * @param level One of DEBUG, INFO, WARN, ERROR, FATAL
     * @param objs the objects to place in the message
     */
    @Override
    public void log(int level, Object... objs) {
        // do nothing
    }

    
    /**
     * Check if a logger is enabled to log at the specified level
     *
     * @param level One of DEBUG, INFO, WARN, ERROR, FATAL
     */
    @Override
    public boolean check(final int level) {
       return false;
    }
}