itext chunk
In this free tutorial we are going to tell you about
chunk in iText. iText is a framework for creating pdf files in java. A
Chunk is the smallest significant part of the text that can be added to a
document. All the contents of the Chunk are of the same font, fontsize, style,
color, etc. In the following sections you will know more about the Chunk
functionality.
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. Without this jar file our application will not run. The packages
which we need to import are java.io.* for input
output, java.awt.* package, 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 chunkPDF. 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 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.
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 for you by that name.
Now open the document by document.open(). Now
make a object of the Chunk class. Use the method setUnderline() which
takes two argument. This method will draw a line that has the length of the
Chunk, the first parameter points to the thickness which positioned at -2f
above the baseline of the Chunk. The method setBackground(Color.red)
lets you define the color of the line. Now add the chunk to the previously
created Document. 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.
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 chunkPDF{
public static void main(String arg[])throws Exception{
Document document=new Document();
PdfWriter.getInstance(document,new FileOutputStream("chunkPDF.pdf"));
document.open();
Chunk chunk=new Chunk("Welecome To RoseIndia.");
chunk.setUnderline(+1f,-2f);
Chunk chunk1=new Chunk("RoseIndia.net");
chunk1.setUnderline(+4f,-2f);
chunk1.setBackground(Color.red);
document.add(chunk);
document.add(chunk1);
document.close();
}
}
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The output of the program is given below:
Download this example.
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