How to remove watermarks from documents in Java

FindWatermarks.java

// Configure search criterion for image watermark
ImageSearchCriteria imageSearchCriteria = new ImageDctHashSearchCriteria("filepath/watermark.png");
imageSearchCriteria.setMaxDifference(0.2); // Set how much the watermark can differ from the provided image.

// Configure search criterion for text watermark
TextSearchCriteria textSearchCriteria = new TextSearchCriteria("CONFIDENTIAL");

// Combining the text and image search criteria
SearchCriteria combinedSearchCriteria = imageSearchCriteria.or(textSearchCriteria);
PossibleWatermarkCollection possibleWatermarks = watermarker.search(combinedSearchCriteria);

Imports.java

import com.groupdocs.watermark.Watermarker;
import com.groupdocs.watermark.search.ImageDctHashSearchCriteria;
import com.groupdocs.watermark.search.ImageSearchCriteria;
import com.groupdocs.watermark.search.PossibleWatermarkCollection;
import com.groupdocs.watermark.search.SearchCriteria;
import com.groupdocs.watermark.search.TextSearchCriteria;

LoadDocument.java

Watermarker watermarker = new Watermarker("filepath/watermarked.pdf");

RemoveWatermark.java

//Iterate through the possible watermarks collection, check, and remove watermarks
while(possibleWatermarks.getCount()>0)
{
	if (possibleWatermarks.get_Item(0).getImageData() != null)
	{
		possibleWatermarks.removeAt(0);
		System.out.println("Removed Image Watermark.");
	}
	else
	{
		possibleWatermarks.removeAt(0);
		System.out.println("Removed Text Watermark.");
	}
} 

RemoveWatermarkFromDocuments.java

// Find and Remove Watermarks from PDF, Word, Excel, PowerPoint, and Visio documents in Java
Watermarker watermarker = new Watermarker("filepath/watermarked.pdf"); // Provide any supported document

// Configure search criterion for image watermark
ImageSearchCriteria imageSearchCriteria = new ImageDctHashSearchCriteria("filepath/watermark.png");
imageSearchCriteria.setMaxDifference(0.2); // Set how much the watermark can differ from the provided image.

// Configure search criterion for text watermark
TextSearchCriteria textSearchCriteria = new TextSearchCriteria("CONFIDENTIAL");

// Combining the text and image search criteria
SearchCriteria combinedSearchCriteria = imageSearchCriteria.or(textSearchCriteria);
PossibleWatermarkCollection possibleWatermarks = watermarker.search(combinedSearchCriteria);

//Iterate through the possible watermarks collection, check, and remove watermarks
while(possibleWatermarks.getCount()>0)
{
	if (possibleWatermarks.get_Item(0).getImageData() != null)
	{
		possibleWatermarks.removeAt(0);
		System.out.println("Removed Image Watermark.");
	}
	else
	{
		possibleWatermarks.removeAt(0);
		System.out.println("Removed Text Watermark.");
	}
} 
watermarker.save("filepath/without_watermark.pdf");
watermarker.close(); 

SaveDocument.java

 watermarker.save("filepath/without_watermark.pdf");
 watermarker.close();