Extract Links from PDF in Java. For details: https://kb.aspose.com/pdf/java/extract-links-from-pdf-in-java/

Extract Links from PDF in Java.java

import com.aspose.pdf.*;
import java.util.List;

public class Main {

    public static void main(String[] args) throws Exception {//main() method for fetching URI        
        License license = new License();//Initialize the PDF license
        license.setLicense("license.lic");//Apply the license

        Document pdfDocument = new Document("PdfWithLinks.pdf");// Load hyperlinks PDF

        // Iterate all the pages
        for (int pageNumber = 1; pageNumber <= pdfDocument.getPages().size(); pageNumber++) {
            System.out.println("Processing Page " + pageNumber);// Display the current page number
            
            Page pdfPage = pdfDocument.getPages().get_Item(pageNumber);// Get the current page

            // Create an annotation selector to find link annotations on the page
            AnnotationSelector linkSelector = new AnnotationSelector(new LinkAnnotation(pdfPage, Rectangle.getTrivial()));

            // Extract all annotations from the current page
            pdfPage.accept(linkSelector);

            // Retrieve the list of selected link annotations
            List<Annotation> linkAnnotations = linkSelector.getSelected();

            // Iterate through each link annotation
            for (Annotation annotation : linkAnnotations) {
                // Check if the annotation is a LinkAnnotation and has actions
                if (annotation instanceof LinkAnnotation) {
                    LinkAnnotation linkAnnotation = (LinkAnnotation) annotation;

                    // Check if the LinkAnnotation has any associated actions
                    if (linkAnnotation.getAction() instanceof GoToURIAction) {
                        // Cast the action to a GoToURIAction to access the URI
                        GoToURIAction uriAction = (GoToURIAction) linkAnnotation.getAction();

                        // Display the extracted URI
                        System.out.println("Found URI: " + uriAction.getURI());
                    }
                }
            }
        }

        // Indicate that the process is complete
        System.out.println("URI extraction completed.");
    }
}