use itext create a PDF file

import Java.awt.Color;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.MalformedURLException;

import com.lowagie.text.*;
import com.lowagie.text.pdf.*;
/*
 * Created on 2004-11-10
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */

/**
 * @author Administrator
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
public class PDFCreate {

 public static void main(String[] args) throws MalformedURLException, IOException {
  PDFCreate pdfCreate = new PDFCreate();
  try {
   pdfCreate.createPDF();
  } catch (FileNotFoundException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (DocumentException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 }
 public void createPDF() throws DocumentException, BadElementException, MalformedURLException, IOException
 {
  Document document = new Document(PageSize.A4);
  //document.addTitle("Title");
  //document.addHeader("header","Header");
  
  PdfWriter.getInstance(document, new FileOutputStream("C:/Helloworld.PDF"));
  
  document.open();
  //add a Word
  document.add(new Paragraph("Hello World!您好！hehe!"));
  //add a table
  Table table = new Table(3);
  table.setBorderWidth(1);
  table.setBorderColor(new Color(0, 0, 255));
  table.setPadding(5);
  table.setSpacing(5);
  Cell cell = new Cell("header");
  cell.setHeader(true);
  cell.setColspan(3);
  table.addCell(cell);
  table.endHeaders();
  cell = new Cell("example cell with colspan 1 and rowspan 2");
  cell.setRowspan(2);
  cell.setBorderColor(new Color(255, 0, 0));
  table.addCell(cell);
  table.addCell("1.1");
  table.addCell("2.1");
  table.addCell("1.2");
  table.addCell("2.2");
  table.addCell("cell test1");
  cell = new Cell("big cell");
  cell.setRowspan(2);
  cell.setColspan(2);
  table.addCell(cell);
  table.addCell("cell test2");
  
  document.add(table);