PDFluent vs Apache PDFBox

use pdfluent::Document;

fn main() -> pdfluent::Result<()> {
    let doc = Document::open("contract.pdf")?;

    // Extract text
    let text = doc.page(0)?.extract_text()?;
    println!("{}", text);

    // Fill AcroForm field
    let mut form = doc.acroform()?;
    form.set_field("signature_date", "2024-04-14")?;
    form.flatten()?;

    doc.save("contract_signed.pdf")?;
    Ok(())
}

import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.text.PDFTextStripper;
import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;

public class Example {
    public static void main(String[] args) throws Exception {
        PDDocument doc = PDDocument.load(new File("contract.pdf"));

        // Extract text
        PDFTextStripper stripper = new PDFTextStripper();
        String text = stripper.getText(doc);
        System.out.println(text);

        // Fill AcroForm field
        PDAcroForm acroForm = doc.getDocumentCatalog().getAcroForm();
        acroForm.getField("signature_date").setValue("2024-04-14");
        acroForm.flatten();

        doc.save("contract_signed.pdf");
        doc.close();
    }
}