Java Requires Chilkat v11.7.0+

Extract One Section of a PDF by its Heading

See more PDF Text Extraction Examples

Demonstrates "labelValue": "section", which returns everything from a heading up to the next heading of the same or higher level. With the "markdown" operation the section keeps its own sub-headings. Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.JsonObject;
import com.chilkatsoft.chilkat2.Pdf;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        // The PDF used in this example is available at sectioned_doc.pdf

        Pdf pdf = new Pdf();
        try {
            pdf.loadFile("qa_data/pdf/sectioned_doc.pdf");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        JsonObject json = new JsonObject();
        JsonObject jsonOut = new JsonObject();

        // The document has the sections Introduction, Opening Hours, Terms and Conditions (with the
        // sub-sections Admission, Safety and Liability) and Contact.  Get the Terms and Conditions:
        // everything after that heading up to the next heading of the same level (Contact).  The heading
        // itself is not part of the value; labelMatches[0].label has it.
        json.updateString("label", "Terms and Conditions");
        json.updateString("labelValue", "section");

        try {
            pdf.extractText("markdown", json, jsonOut);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println(jsonOut.stringOf("markdown"));

        // The same with the "text" operation gives the section as plain text.
        try {
            pdf.extractText("text", json, jsonOut);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println("---- as text ----");
        System.out.println(jsonOut.stringOf("text"));

        // Sample output:

        // ### Admission
        //
        // Admission is free. Groups of more than ten should book in advance so that a volunteer can be assigned to them.
        //
        // ### Safety
        //
        // No more than eight people may be on the stair at one time. Children under twelve must be accompanied by an adult, and the lantern room is closed in high winds.
        //
        // ### Liability
        //
        // Visitors climb the tower at their own risk. The society carries public liability insurance but accepts no responsibility for personal property.
        // ---- as text ----
        // Admission
        //
        // Admission is free. Groups of more than ten should book in advance so that a volunteer can be assigned to them.
        //
        // Safety
        //
        // No more than eight people may be on the stair at one time. Children under twelve must be accompanied by an adult, and the lantern room is closed in high winds.
        //
        // Liability
        //
        // Visitors climb the tower at their own risk. The society carries public liability insurance but accepts no responsibility for personal property.
    }
}