/**
  * creates a copy of the input file into the output file, and readd the given page at the end of the output file.
  * 
  * @param inputFile the path of the input document.
  * @param password the password of the input document.
  * @param outputFile the path of the output document.
  * @param pageToDuplicate the page to remove (0-based from 0 to GetPageCount() - 1)
  * @return true or false
  */
 public static boolean duplicatePage(String inputFile, String password, String outputFile, int pageToDuplicate) {
     try {
         //init the library and activate the license
         Global.Init(company, email, key);
    
         //open the input file
         Document mInputFile = new Document();
         if(mInputFile.Open(inputFile, password) == 0) {
             //create the output file
             Document mOutputDoc = new Document();
             if(mOutputDoc.Create(outputFile) == 0) {
                 ImportContext mContext = mOutputDoc.ImportStart(mInputFile);
                 if(mContext != null) { //import all pages
                     int pagesCount = mInputFile.GetPageCount();
                     for(int i = 0; i < pagesCount; i++) 
                         mOutputDoc.ImportPage(mContext, i, i);
                     mContext.Destroy();
      
                     //destroy the old import context, and create a new one
                     if(pageToDuplicate >= 0 && pageToDuplicate < pagesCount) { //now re-import the page to duplicate
                         mContext = mOutputDoc.ImportStart(mInputFile);
                         mOutputDoc.ImportPage(mContext, pageToDuplicate, pagesCount);
                         mContext.Destroy();
                     }
                 }
                 mOutputDoc.Save();
                 mOutputDoc.Close();
             }
          }
          mInputFile.Close();
          return true;
      } catch (Exception e) {
          e.printStackTrace();
      }
      return false;
 }