import com.aspose.pdf.*;
public class Main {
    public static void main(String[] args) throws Exception {//Fill PDF Form

        // Load a license
        License lic = new License();
        lic.setLicense("Conholdate.Total.Product.Family.lic");

        // Load the PDF
        Document pdf = new Document("TextBox_out.pdf");

        // Access the textbox
        TextBoxField textbox = (TextBoxField) pdf.getForm().get("textbox1");

        // Set the value
        textbox.setValue("New value for the field");

        // Set the field appearance
        textbox.setColor(Color.fromRgb(Color.getRed().toRgb()));
        textbox.setTextVerticalAlignment(VerticalAlignment.Bottom);

        // Save the PDF
        pdf.save("Filled.pdf");

        System.out.println("Done");
    }
}