Java Barcode is a Java barcode generator which generates high quality 1D (linear) and 2D (matrix) barcodes in Java, Jasper Reports, iReport, and Eclipse BIRT projects.

 

Postnet Introduction

POSTNET (Postal Numeric Encoding Technique) is a barcode symbology that is used by the United States Postal Service to assist in directing mail. The ZIP Code or ZIP+4 code is encoded in half- and full-height bars.

 

Java Postnet Generator - Valid Data Scope

Java Postnet Generator encodes:

• 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

 

1. How to generate barcode POSTNET in Java class?

   // Create Java POSTNET object 
   Postnet barcode = new Postnet(); 
   
   // Set POSTNET data text to encode
   barcode.setData("0123456789"); 
   
   // Generate POSTNET barcode & print into Graphics2D object
   barcode.drawBarcode("Java Graphics2D object"); 
   
   // Generate POSTNET barcode & encode into GIF format
   barcode.drawBarcode("C://barcode-postnet.gif"); 
   
   // Generate POSTNET barcode & encode into JPEG format
   barcode.drawBarcode("C://barcode-postnet.jpg"); 
   
   

   
   
   

2. How to generate & encode POSTNET barcodes to EPS?

   // Create Java Postnet object 
   Postnet barcode = new Postnet(); 
   
   // Set Postnet data text to encode
   barcode.setData("0123456789"); 
   
   // Generate Postnet barcode & encode into EPS
   barcode.drawBarcode2EPS("C://barcode-postnet.eps"); 

   
   
   

3. How to create & encode POSTNET image in html or jsp pages?

   
   
   
   • Under demo package, copy barcode folder and its contents to your tomcat.
     
     
   • Start tomcat, navigate to http://YourDomain:Port/barcode/barcode?DATA=0123456789&TYPE=postnet
     
     
   • To create bar code images in html or jsp pages, you can insert a image tag (img) into your page.
     For example, <img src="http://YourDomain:Port/barcode/barcode?DATA=0123456789&TYPE=postnet" />
     
     
   
   
   

4. How to create & print barcode POSTNET image in Java Servlet class?

   import com.onbarcode.barcode.AbstractBarcode; 
   import com.onbarcode.barcode.Postnet; 
   import javax.servlet.http.HttpServlet; 
   import javax.servlet.http.HttpServletRequest; 
   import javax.servlet.http.HttpServletResponse; 
   import javax.servlet.ServletException; 
   import javax.servlet.ServletOutputStream; 
      
   public class BarcodeServlet extends HttpServlet 
   { 
       public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException 
       { 
           try { 
               Postnet barcode = new Postnet(); 
               barcode.setData("0123456789"); 
                    
               ServletOutputStream servletoutputstream = response.getOutputStream(); 
                 
               response.setContentType("image/jpeg"); 
               response.setHeader("Pragma", "no-cache"); 
               response.setHeader("Cache-Control", "no-cache"); 
               response.setDateHeader("Expires", 0); 
              
               // Generate POSTNET barcode & output to ServletOutputStream
               barcode.drawBarcode(servletoutputstream); 
         
           } catch (Exception e) { 
               throw new ServletException(e); 
           } 
       } 
   } 

   
   
   
5. How to generate POSTNET barcode image in Jasper Reports?
   
   Complete Guide for Barcode Generation in Jasper Reports
   
   
6. How to generate POSTNET barcode image in iReport?
   
   Complete Guide for Barcode Generation in iReport
   
   
7. How to generate POSTNET barcode image in Eclipse BIRT?
   
   Complete Guide for Barcode Generation in Eclipse BIRT
   
   
8. How to set generated POSTNET barcode image width and height?

   1) You can set barcode image width and height through properties barcodeWidth and barcodeHeight values.
   
   or
   
   2) You can set X (bar module width) and Y (bar module height) values
   
   

 
Java Postnet Generator in Java Class: com.onbarcode.barcode.Postnet

Category	Class Properties	Servlet Properties	Default	Comments
Basic	data	DATA	""	value to encode
	addCheckSum	ADD-CHECK-SUM	true	addCheckSum property is not applied here. Barcode Library will automatically add one checksum character using Modulo 10.
Postnet Special	shortTallRatio	SHORT-TALL-RATIO	0.4f	short bar vs tall bar ratio
Size Related	uom	UOM	0	Unit of meature for all size related setting in the library. 0: pixel; 1: inch; 2: cm.
	X	X	1	width of barcode module (narrow bar), default is 1 pixel
	Y	Y	30	barcode module height, default is 30 pixel
	barcodeWidth	BARCODE-WIDTH	0	generted barcode image width
	barcodeHeight	BARCODE-HEIGHT	0	generted barcode image height
	leftMargin	LEFT-MARGIN	0	image left margin
	rightMargin	RIGHT-MARGIN	0	image right margin
	topMargin	TOP-MARGIN	0	image top margin
	bottomMargin	BOTTOM-MARGIN	0	image bottom margin
	resolution	RESOLUTION	72	in DPI
	rotate	ROTATE	IBarcode.ROTATE_0 (0)	valid values: IBarcode.ROTATE_0 (0), IBarcode.ROTATE_90 (1), IBarcode.ROTATE_180 (2), IBarcode.ROTATE_270 (3)
Text & Color	showText	SHOW-TEXT	true	If true, display barcode data text, otherwise do not display.
	showCheckSumChar	SHOW-CHECKSUM-CHAR	true	If true, display the check sum character in the end of data, if there is a check sum.
	textFont	TEXT-FONT	Arial, Plain, 11	Barcode text font style
	textMargin	TEXT-MARGIN	6	Space between barcode and barcode data text, default is 6 pixel