Java Postnet Generator generate, create barcode
Postnet images in Java application

Generate, Create, Print, Draw Postnet barcode in Java projects

• Easy to generate POSTNET barcodes in Java Class, J2EE applications
• Simple to redistribute Java POSTNET barcode library. No registration key. No activation code.
• Generating high quality POSTNET Bar Code images in GIF, JPEG, & EPS formats
• Generate POSTNET barcodes in Jasper Reports, iReport & Eclipse BIRT
• Compatible with high-resolution and low-resolution printers for high-quality barcode output
• Completely developed in Java
• Mature POSTNET barcode generation Java library used by 2000+ clients

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? (Complete Java POSTNET Generator Demo Source Code)

   // Create Java POSTNET object 
   Postnet barcode = new Postnet(); 
   
   // Set POSTNET data text to encode
   barcode.setData("12345"); 
   
   // 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("12345"); 
   
   // 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=12345&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=12345&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("12345"); 
                    
               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?
   
   You can stream barcodes into your BIRT reports using Java Barcode Generator.
   
   However we recommend you use our BIRT Barcode Generator Plugin to generate and print POSTNET barcodes in your BIRT reports.
   
   
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
   
   

// generate barcode and output to OutputStream object
public boolean drawBarcode(OutputStream outputStream) throws Exception

// generate barcode into a new BufferedImage object
public BufferedImage drawBarcode() throws Exception

/*
    Use this method to generate barcode, and save into gif or jpeg files
    1. to save into gif file, filename ends with ".gif", like "c:\\barcode.gif"
    2. to save into jpeg file, filename ends with ".jpg", like "c:\\barcode.jpg"
*/
public byte[] drawBarcodeToBytes() throws Exception

public boolean drawBarcode(String imageFile) throws Exception

// Generate barcode and save into EPS file, the filename must ends with ".eps"
public void drawBarcode2EPS(String filename) throws Exception

// Generate barcode on Graphics2D object within certain area
public void drawBarcode(Graphics2D g, Rectangle2D rectangle) throws Exception