Draw barcodes to image files

 BarCode barcode = new BarCode(); 
  barcode.setType(BarCode.CODE39); 
  barcode.setData("0123456789"); 
  barcode.draw("C://code39.gif"); 

Draw barcodes to java.io.OutputStream object

 BarCode barcode = new BarCode(); 
  barcode.setType(BarCode.CODE39); 
  barcode.setData("0123456789"); 
  barcode.draw(outputStreamObject); 

Draw barcodes to java.awt.Graphics2D object

 BarCode barcode = new BarCode(); 
  barcode.setType(BarCode.CODE39); 
  barcode.setData("0123456789"); 
  barcode.draw(graphicsObject); 

How to generate barcode image in html or jsp pages?

1. Download trial package, unzip it, copy barcode folder and its contents to your Java Servlet container like Tomcat, or Jboss.
   
   
2. Start Tomcat, navigate to http://url:port/barcode/barcode?data=0123456789&type=4
   
   
3. To generate barcodes in html page or jsp page, insert the following html code.
   <img src="http://url:port/barcode/barcode?data=0123456789&type=4" />
   
   

How to generate barcode image in Java Servlet?

  public void doPost(HttpServletRequest request, HttpServletResponse response) throws
   ServletException 
    { 
        try { 
            BarCode barcode = new BarCode();
            barcode.setType(BarCode.CODE39); 
            barcode.setData("0123456789"); 
             
            ServletOutputStream sout = response.getOutputStream(); 
 
            response.setContentType("image/jpeg"); 
            response.setHeader("Pragma", "no-cache"); 
            response.setHeader("Cache-Control", "no-cache"); 
            response.setDateHeader("Expires", 0); 
 
            barcode.drawBarcode(sout); 
 
        } catch (Exception e) { 
            throw new ServletException(e); 
        } 
    }