# Version.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.util;

    import java.io.BufferedInputStream;
    import java.io.IOException;
    import java.io.InputStream;
    import java.util.Properties;

    import org.apache.commons.logging.Log;
    import org.apache.commons.logging.LogFactory;

    /**
     * Exposes PDFBox version.
     */
    public final class Version
    {
        private static final Log LOG = LogFactory.getLog(Version.class);

        private static final String PDFBOX_VERSION_PROPERTIES =
                "/org/apache/pdfbox/resources/version.properties";

        private Version()
        {
            // static helper
        }

        /**
         * Returns the version of PDFBox.
         */
        public static String getVersion()
        {
            try (InputStream resourceAsStream = Version.class.getResourceAsStream(PDFBOX_VERSION_PROPERTIES);
                 InputStream is = new BufferedInputStream(resourceAsStream))
            {
                Properties properties = new Properties();
                properties.load(is);
                return properties.getProperty("pdfbox.version", null);
            }
            catch (IOException io)
            {
                LOG.debug("Unable to read version from properties - returning null", io);
                return null;
            }
        }
    }