pdf system
In this example we are going to see how the data which
we have in the pdf file will be printed on the command prompt. After going
through this example you will be able to write the pdf data on the command
prompt, just go through this tutorial properly.
To make a program over this, firstly we need to import
some packages. Remember to make this program the first and foremost thing to
remember is to place the iText.jar in WEB-INF/lib of your web
application. The packages we were talking about are java.io.* for input
output, com.lowagie.text.pdf.*, and com.lowagie.text.*. These two
package will help us to make and use pdf file in our program.
Now create a file named helloSystemPDF. Remember
the name of the file should be such that the reader can understand what the
program is going to perform. Inside the class declare a main method inside which
we are going to write the logic of our program.
Firstly make a object of class Paragraph. Now make a object of class Document. The Document
describes a document's page size, margins, and other important attributes. It
works as a container for a document's chapters, sections, images, paragraphs,
and other content. Inside the constructor of the Document pass the PageSize.
Now create a document writer that writes the equivalent
syntax for a document's content to a specific OutputStream. PdfWriter.getInstance()
creates a PDF document writer that writes PDF syntax to concerned
file by a FileOutputStream. If the pdf file doesn't exist then it will
create a pdf file by that name. In this program we are strictly specifying where
the output has to be printed. We are printing the output on the command
prompt.
Now open the document by document.open(). After
that add the content to the document. Create a Paragraph that houses a
paragraph of text, tells the PDF document writer to ensure that the
Paragraph's text is justified on both sides and adds the Paragraph to the
previously created Document. Inside the constructor of Paragraph
pass any String. To set the margins of the pdf file call the method setMargins
and add it to Document object. The method setMarginMirroring(true),
the parameter passed in the method allows you to margin mirroring. Now add the Paragraph
object to the previously created Document object. At last closes the document by
using the document.close(). The closing of the document is important
because it flushes and closes the OutputStream instance.
To run this program firstly compile the program by
using javac. The output of the file will be given by the java command.
The code of the program is given below:
import java.io.*;
import java.awt.*;
import com.lowagie.text.*;
import com.lowagie.text.pdf.*;
public class helloSystemPDF{
public static void main(String arg[])throws Exception{
System.out.println("Hello RoseIndia");
Paragraph paragraph=new Paragraph();
Document document = new Document(PageSize.A4, 36, 72, 108, 180);
PdfWriter.getInstance(document,System.out);
PdfWriter.getInstance(document,
new FileOutputStream("helloSystemPDF.pdf"));
document.open();
document.add(new Paragraph("Margin--->>roseinia.net"));
document.setMargins(180,108,71,10);
document.add(new Paragraph("You can visit
roseindia.net for more java tutorials"));
paragraph.add("Hello roseindia.net,
Hello roseindia.net,Hello roseindia.net,
Hello roseindia.net,Hello roseindia.net,
Hello roseindia.net,Hello
roseindia.net,Hello roseindia.net.");
document.setMarginMirroring(true);
document.add(new Paragraph("Starting on
the next page, the margins will be mirrored."));
document.add(paragraph);
document.close();
}
}
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The output of the program is given below: 
Download
this example.
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Y! MyWeb
