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Get Document Information from PdfReader

import com.lowagie.text.pdf.PdfReader; public class MainClass {   public static void main(String[] args) throws Exception {     PdfReader reader = new PdfReader("HelloWorldToRead.pdf");     System.out.println("PDF Version: " + reader.getPdfVersion());     System.out.println("Number of pages: " + reader.getNumberOfPages());     System.out.println("File length: " + reader.getFileLength());     System.out.println("Encrypted? " + reader.isEncrypted());     System.out.println("Rebuilt? " + reader.isRebuilt());   } }