import com.ironsoftware.ironpdf.PdfDocument;  
import com.ironsoftware.ironpdf.render.ChromePdfRenderOptions;  
import java.io.IOException;  
import java.nio.file.*;

// #1 Use Case: Create a PDF Form from HTML Form Markup  
Path outputLocation = Paths.get("assets/BasicForm.pdf");  
String formHTML = "<html>"  
  + "<body>"  
  + "<h2>Editable PDF  Form</h2>"  
  + "<form>"  
  + "First name: <br> <input type='text' name='firstname' value=''> <br>"  
  + "Last name: <br> <input type='text' name='lastname' value=''>"  
  + "</form>"  
  + "</body>"  
  + "</html>";  
  
ChromePdfRenderOptions renderOptions = new ChromePdfRenderOptions();  
renderOptions.setCreatePdfFormsFromHtml(true);  
PdfDocument.renderHtmlAsPdf(formHTML, renderOptions).saveAs(outputLocation);  
  
// #2 Use Case: Writing Values to the PDF Form  
PdfDocument form = PdfDocument.fromFile(outputLocation);  
  
// Set the value of the firstname input field.  
form.getForm().setFieldValue("firstname", "Minnie");  
  
// Set the value of the lastname input field.  
form.getForm().setFieldValue("lastname", "Mouse");  
  
// Save the changes to the PDF Form.  
form.saveAs(Paths.get("assets/BasicForm_Filled.pdf"));