import java.io.*;
import java.awt.*;
import com.lowagie.text.*;
import com.lowagie.text.pdf.*;
public class pageSizePDF
         {  
    public static void main(String arg[])throws Exception
              {
               
               Document document=new Document(PageSize.A4,0,0,10,10);
               PdfWriter.getInstance(document,new FileOutputStream("pageSizePDF.pdf"));
               document.open();
               document.add(new Paragraph("A4 page Size--->>roseinia.net"));
               document.close();
        }
}