Package com

Source Code of com.HeaderFooter

package com;
import com.itextpdf.text.Document;
import com.itextpdf.text.Element;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.ColumnText;
import com.itextpdf.text.pdf.PdfPageEventHelper;
import com.itextpdf.text.pdf.PdfWriter;

public class HeaderFooter extends PdfPageEventHelper {
          Phrase[] header = new Phrase[2];
          int pagenumber;
  
          public void onOpenDocument(PdfWriter writer, Document document) {
             
          }
  
          public void onChapter(PdfWriter writer, Document document,
                  float paragraphPosition, Paragraph title) {
              pagenumber = 1;
          }
  
          public void onStartPage(PdfWriter writer, Document document) {
              pagenumber++;
          }
  
          public void onEndPage(PdfWriter writer, Document document) {
              Rectangle rect = writer.getBoxSize("art");

              switch(writer.getPageNumber() % 2) {
              case 0:
                  ColumnText.showTextAligned(writer.getDirectContent(),
                          Element.ALIGN_RIGHT, header[0],
                          rect.getRight(), rect.getTop(), 0);
                  break;
              case 1:
                  ColumnText.showTextAligned(writer.getDirectContent(),
                          Element.ALIGN_LEFT, header[1],
                          rect.getLeft(), rect.getTop(), 0);
                  break;
              }
              ColumnText.showTextAligned(writer.getDirectContent(),
                      Element.ALIGN_CENTER, new Phrase(String.format("page %d", pagenumber)),
                      (rect.getLeft() + rect.getRight()) / 2, rect.getBottom() - 18, 0);
          }
      }
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