ImageOutputStream output = null;
ImageWriter imageWriter = null;
try
{
PDPage page = (PDPage)pages.get( i );
BufferedImage image = page.convertToImage();
String fileName = outputPrefix + (i+1) + "." + imageType;
System.out.println( "Writing:" + fileName );
output = ImageIO.createImageOutputStream( new File( fileName ) );
boolean foundWriter = false;