Adding List in a PDF using Java

In this article, we will learn how to create a PDF and add a list to that PDF using java. For adding a list in a PDF, we will use the iText library. These are the steps that should be followed to add a list in a PDF using java.

1. Creating a PdfWriter object

The PdfWriter class represents the DocWriter for a PDF. The constructor of this class accepts a string, i.e. the path of the file where the PDF is to be created.

Java

// importing the PdfWriter class.
import com.itextpdf.kernel.pdf.PdfWriter;

// path where the pdf is to be created.
String path = "C:/JavaPdf/addingList.pdf";
PdfWriter pdfwriter = new PdfWriter(path);

2. Creating a PdfDocument object

The PdfDocument class is the class that represents the PDF Document in iText, To instantiate this class in write mode, you need to pass an object of the class PdfWriter (i.e. pdfwriter from above code ) to its constructor.

Java

// Creating a PdfDocument  object.
// passing PdfWriter object constructor of pdfDocument.
PdfDocument pdfdocument = new PdfDocument(pdfwriter);

3. Creating the Document object

The Document class is the root element when creating a self-sufficient PDF. One of the constructors of this class accepts an object of the class PdfDocument (i.e. pdfdocument).

Java

// Creating a Document and passing pdfDocument object
Document document = new Document(pdfdocument);

4. Creating a List object and adding elements to the list object.

The List represents a series of objects that are vertically oriented. We add elements to the list object using the add() method of the List class.

Java

// Creating a list
List list = new List();

//  Adding contents to the list
list.add("geekforgeeks");
list.add("helps");
list.add("to");
list.add("master");
list.add("DSA");

5. Here comes the final part Adding List objects to the document.

Add the list object using the add() method of the Document class, and close the document using close() method of Document class 

Java

// Adding list to the document
document.add(list);

// Closing the document
document.close();

Example: Here is the final code that helps us in understanding how to add a list in PDF using java. 

Java

// Java program to add a list in a PDF

import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.layout.element.List;
import com.itextpdf.layout.element.Paragraph;
import com.itextpdf.layout.Document;

public class AddList {
    public static void main(String args[])
    {
        try {
            // path where the pdf is to be created.
            String path = "C:/JavaPdf/addingList.pdf";
            PdfWriter pdfwriter = new PdfWriter(path);

            // Creating a PdfDocument object.
            // passing PdfWriter object constructor of
            // pdfDocument.
            PdfDocument pdfdocument
                = new PdfDocument(pdfwriter);

            // Creating a Document and passing pdfDocument
            // object
            Document document = new Document(pdfdocument);

            // Creating a list
            List<String> list = new ArrayList();

            // Adding contents to the list
            list.add("geekforgeeks");
            list.add("helps");
            list.add("to");
            list.add("master");
            list.add("DSA");

            // Adding list to the document
            document.add(list);

            // Closing the document
            document.close();
            System.out.println(
                "List has been successfully added to the file :"
                + path);
        }
        catch (Exception e) {
            System.out.println(
                "failed to add the list to file due to "
                + e);
        }
    }
}

Compile and execute the saved Java file from the Command prompt using the following commands: 

javac AddList.java 
java AddList

Output

pdf with a list added using java