utilities.PDFUtilities.java Source code

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Here is the source code for utilities.PDFUtilities.java

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/*
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package utilities;

import java.awt.image.BufferedImage;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;

/**
 *
 * @author Bernhard
 */
public class PDFUtilities {
    public static ArrayList<BufferedImage> extractPagesAsImage(File file) throws Exception {
        ArrayList<BufferedImage> images = new ArrayList<>();

        if (file != null) {
            PDDocument doc = PDDocument.load(file);
            List<PDPage> pages = doc.getDocumentCatalog().getAllPages();
            for (PDPage page : pages) {

                BufferedImage bImage = page.convertToImage(BufferedImage.TYPE_INT_RGB, 160);
                images.add(bImage);
            }
        }
        return images;
    }

    public static BufferedImage extractSingleImage(File file, int pageIndex) throws Exception {
        ArrayList<BufferedImage> images = extractPagesAsImage(file);
        if (!(images.size() + 1 < images.size())) //enough pictures in list
        {
            return images.get(pageIndex - 1);
        } else {
            throw new Exception("PageIndex to high!");
        }

    }
}