Convert ZIP To PDF
Lets discuss the conversion of a zipped file
into pdf file with the help of an example.
Download iText API
required for the compilation of this example from the link http://www.lowagie.com/iText/download.html.
First set the class path for jar file by using the
following steps:
1.Download the iText jar files.
2.Unzip all the .jar files.
3.Copy all .jar files into lib directory of jdk. e.g. For jdk1.6.0 we
need to copy C:\jdk1.6.0\lib.
4.Set the classpath by using the following steps.
Right click on " My Computer->Click on
Properties->Advanced->Environment variables
In the Environment variable check whether the
classpath is set or not in the variable "classpath". If the path
is not set then click on "Edit" button (if variable classpath is
already created otherwise create the variable "classpath") and
set the full path with the name of iText API .jar files then click
on OK and Apply button.
Pass the name of a zipped file
through command line argument. Take the zipped file as input by using the FileInputStream.
Read this file from the system, unzip it and then store it into a byte array.
Convert this array of byte into the string by using the string class
constructor.Generate a pdf file by using the following steps.
1.Create an instance of the Document class. The Document class describes a document's page size, margins, and other important attributes. The Document class act
as a container for a document's sections, images, paragraphs, chapters and other
contents.
2.Open the document by using doc.open ().
3.Pass the string into the paragraph by using the code Paragraph p = new Paragraph (String
str).
6.Add this paragraph to the document by using doc.add(p).
Create a pdf file and pass this document in this pdf file by using the
code PdfWriter.getInstance (doc, new FileOutputStream ("pdfFile.pdf"))
for creating a PDF document writer
5.Close the document by using doc.close ().
Here is the code of the program :
import java.io.*;
import java.awt.*;
import com.lowagie.text.*;
import com.lowagie.text.pdf.*;
import java.io.*;
import java.util.zip.*;
public class ZipToPDF
{
public static void main(String arg[])throws Exception
{
System.out.println("Hello RoseIndia");
Document document = new Document(
PageSize.A4, 36, 72, 108, 180);
PdfWriter.getInstance(document,System.out);
PdfWriter.getInstance(document,new
FileOutputStream("pdfFile.pdf"));
document.open();
ZipInputStream zip = new ZipInputStream(new
BufferedInputStream(new FileInputStream(arg[0])));
ZipEntry entry;
while((entry = zip.getNextEntry()) != null)
{
byte data[]=new byte[1024];
int count;
String text="";
while((count=zip.read(data,0,1024))!=-1)
{
text=new String(data);
document.add(new Paragraph(text));
}
}
document.close();
}
}
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Output of The Example:
Download this example.
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