Java/Convert PDF to PNG Images

<repositories>    <repository>        <id>com.e-iceblue</id>        <name>e-iceblue</name>        <url>https://repo.e-iceblue.com/nexus/content/groups/public/</url>    </repository></repositories><dependencies>    <dependency>        <groupId>e-iceblue</groupId>        <artifactId>spire.pdf.free</artifactId>        <version>5.1.0</version>    </dependency></dependencies>

import java.awt.image.BufferedImage;import java.io.File;import java.io.IOException;import com.spire.pdf.PdfDocument;import com.spire.pdf.graphics.PdfImageType;import javax.imageio.ImageIO;public class WholePDFToImages {    public static void main(String[] args) throws IOException {        //Create a PdfDocument instance        PdfDocument pdf = new PdfDocument();        //Load a PDF sample document        pdf.loadFromFile("input.pdf");        //Loop through every page        for (int i = 0; i < pdf.getPages().getCount(); i++) {            //Convert all pages to images and set the image Dpi            BufferedImage image = pdf.saveAsImage(i, PdfImageType.Bitmap,500,500);            //Save images to a specific folder as a .png files            File file = new File("C:\\Users\\Administrator\\Desktop\\PDFToImages" + "/" + String.format(("ToImage-img-%d.png"), i));            ImageIO.write(image, "PNG", file);        }        pdf.close();    }}

import java.awt.image.BufferedImage;import java.io.File;import java.io.IOException;import com.spire.pdf.PdfDocument;import com.spire.pdf.graphics.PdfImageType;import javax.imageio.ImageIO;public class ParticularPDFToImage {    public static void main(String[] args) throws IOException {        //Create a PdfDocument instance        PdfDocument pdf = new PdfDocument();        //Load a PDF sample document        pdf.loadFromFile("input.pdf");        //Convert the third page to an image and set the image Dpi        BufferedImage image= pdf.saveAsImage(2, PdfImageType.Bitmap,500,500);        //Save the image to another file as a .png format         ImageIO.write(image, "PNG", new File("ToPNG.png"));    }}