چگونه با فایل های PDF در جاوا کار کنیم

PdfFileEditor editor = new PdfFileEditor();
String[] inputs = {"part1.pdf", "part2.pdf", "part3.pdf"};
editor.concatenate(inputs, "merged.pdf");

PdfFileEditor editor = new PdfFileEditor();
// Extract pages 2 through 5 (1-indexed)
editor.extract("source.pdf", 2, 5, "extracted.pdf");

PdfFileEditor editor = new PdfFileEditor();
editor.splitToPages("document.pdf", "output_dir/");

try (Document doc = new Document("input.pdf")) {
    PdfFileEditor editor = new PdfFileEditor();
    ContentsResizeParameters params = new ContentsResizeParameters(
        ContentsResizeValue.percents(10),  // left margin
        ContentsResizeValue.percents(80),  // content width
        ContentsResizeValue.percents(10),  // right margin
        ContentsResizeValue.percents(10),  // top margin
        ContentsResizeValue.percents(80),  // content height
        ContentsResizeValue.percents(10)   // bottom margin
    );
    editor.resizeContents(doc, params);
    doc.save("resized.pdf");
}

PdfFileEditor editor = new PdfFileEditor();
editor.makeBooklet("input.pdf", "booklet.pdf");