PdfToImageConverter.java

package filetools.pdf;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.imageio.ImageIO;

import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;

public class PdfToImageConverter {
	static String folder;
	static String newFileName;

	public static void main(String args[]) {
		try {
			folder = utilities.BrowserDialogs.chooseFolder();
			// TODO: create a method which tests if the file is an
			// ok-to-the-end-PDF to work with
			if (folder != null) {
				ArrayList<File> files = utilities.ListsFiles.getPaths(new File(folder),
						new ArrayList<File>());
				if (files != null) {
					for (int i = 0; i < files.size(); i++) {
						if (files.get(i) != null) {
							try {
								System.out.println(files.get(i)
										.getCanonicalPath());
						if (PdfAnalysis.testPdfOk(files.get(i))) {								
										PDDocument testfile = PDDocument
												.load(files.get(i));
									
											// to create new file eliminate the
											// ".pdf"-extension
											int lenOld = files.get(i)
													.toString().length();
											int lenNew = lenOld - 4;
											 newFileName = (files.get(i)
													.toString().substring(0,
													lenNew));											 
											convertToJpegPages(testfile);								
										}								
								}
							 catch (IOException e) {
								System.out.println(e);
							}
						}
					}
				}
			}
		} catch (IOException e) {
			System.out.println(e);
		}
	}

	@SuppressWarnings("unchecked")
	private static void convertToJpegPages(PDDocument testfile) throws IOException {
		int j = 0;
		List<PDPage> pages = testfile
				.getDocumentCatalog()
				.getAllPages();
		for (PDPage page : pages) {
			BufferedImage img = page
					.convertToImage(
							BufferedImage.TYPE_INT_RGB,
							72);
			ImageIO.write(img, "jpg",
					new File(newFileName
							+ "_page_" + j
							+ ".jpg"));
			j++;
		}
		
	}
}