# FontMappers.java

    /*
     * 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 org.apache.pdfbox.pdmodel.font;

    /**
     * FontMapper factory class.
     *
     * @author John Hewson
     */
    public final class FontMappers
    {
        private static FontMapper instance;

        private FontMappers()
        {
        }

        // lazy thread safe singleton
        private static class DefaultFontMapper
        {
            private static final FontMapper INSTANCE = new FontMapperImpl();
        }

        /**
         * Returns the singleton FontMapper instance.
         */
        public static FontMapper instance()
        {
            if (instance == null)
            {
                instance = DefaultFontMapper.INSTANCE;
            }
            return instance;
        }

        /**
         * Sets the singleton FontMapper instance.
         */
        public static synchronized void set(FontMapper fontMapper)
        {
            instance = fontMapper;
        }
    }