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The Apache PDFBox library is an open source Java tool for working with PDF documents.
/*
* 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;
import java.io.IOException;
import java.util.Properties;
import org.apache.pdfbox.util.ResourceLoader;
/**
* A simple command line utility to get the version of PDFBox.
*
* @author Ben Litchfield
* @version $Revision: 1.5 $
*/
public class Version
{
private static final String PDFBOX_VERSION_PROPERTIES =
"org/apache/pdfbox/resources/pdfbox.properties";
private Version()
{
//should not be constructed.
}
/**
* Get the version of PDFBox or unknown if it is not known.
*
* @return The version of pdfbox that is being used.
*/
public static String getVersion()
{
String version = "unknown";
try
{
Properties props = ResourceLoader.loadProperties( PDFBOX_VERSION_PROPERTIES, false );
version = props.getProperty( "pdfbox.version", version );
}
catch( IOException io )
{
//if there is a problem loading the properties then don't throw an
//exception, 'unknown' will be returned instead.
io.printStackTrace();
}
return version;
}
/**
* This will print out the version of PDF to System.out.
*
* @param args Command line arguments.
*/
public static void main(String[] args)
{
if( args.length != 0 )
{
usage();
return;
}
System.out.println( "Version:" + getVersion() );
}
/**
* This will print out a message telling how to use this example.
*/
private static void usage()
{
System.err.println( "usage: " + Version.class.getName() );
}
}