Java Barcode QR Code GeneratorBarcode QR-Code Generation in Java Class, Jasper Reports, iReport, BIRT
Java Barcode offers the most affordable Java barcode generator for barcode Java professionals.
Java QR-Code Introduction
QR-Code is also known as Denso Barcode, QRCode, Quick Response Code, JIS X 0510, ISO/IEC18004
QR Code is a kind of 2-D (two-dimensional) symbology developed by Denso Wave (a division of Denso Corporation at the time) and released in 1994 with the primary aim of being a symbol that is easily interpreted by scanner equipment. QR Code is capable of handling all types of data, such as numeric and alphabetic characters, Kanji, Kana, Hiragana, symbols, binary, and control codes. The symbol versions of QR Code range from Version 1 to Version 40. Each version has a different module configuration or number of modules (the module refers to the black and white dots that make up QR Code). "Module configuration" refers to the number of modules contained in a symbol, commencing with Version 1 (21 x 21 modules) up to Version 40 (177 x 177 modules). Each higher version number comprises 4 additional modules per side. Each QR Code symbol version has the maximum data capacity according to the amount of data, character type and error correction level. In other words, as the amount of data increases, more modules are required to comprise QR Code, resulting in larger QR Code symbols. QR Code has error correction capability to restore data if the code is dirty or damaged. Four error correction levels are available for users to choose according to the operating environment. Raising this level improves error correction capability but also increases the amount of data QR Code size. To select error correction level, various factors such as the operating environment and QR Code size need to be considered. Level Q or H may be selected for factory environment where QR Code gets dirty, whereas Level L may be selected for clean environment with the large amount of data. Typically, Level M (15%) is most frequently selected. The QR Code error correction feature is implemented by adding a Reed-Solomon Code to the original data.
Java QR-Code Properties
Java Barcode QR Code Generator - Java Class Implementation
The following Java code illustrates how to generate a barcode in Java class:
22 private static void testLinear() throws Exception
23 {
24 Linear barcode = new Linear();
25
26 // set barcode properties
27 barcode.setType(Linear.CODE128);
28 barcode.setData("1234567890");
29
30 // draw and generate barcode to specified file
31 barcode.draw("C:\\Code128.gif");
32 }
Java Barcode QR Code Generator - Java Servlet Implementation
The following Java code illustrates how to generate a barcode in Java Servlet class:
11 public class BarcodeServlet extends HttpServlet {
12 public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException
13 {
14 try {
15 Linear barcode = new Linear();
16
17 // set barcode properties
18 barcode.setType(Linear.CODE128);
19 barcode.setData("1234567890");
20
21 // draw and generate barcode to response's ServletOutputStream
22 ServletOutputStream servletoutputstream = response.getOutputStream();
23
24 barcode.draw(servletoutputstream);
25
26 } catch (Exception e) {
27 throw new ServletException(e);
28 }
29 }
30 }
31
View BarcodeServlet.java source code Java Barcode QR Code Generator - HTTP Request Implementation
Java Barcode QR Code Generator - java.awt.Image Object Implementation
The following Java source code shows how to generate a barcode in a java.awt.Image object:
21
22 private static void testLinear() throws Exception
23 {
24 Linear barcode = new Linear();
25
26 // set barcode properties
27 barcode.setType(Linear.CODE128);
28 barcode.setData("1234567890");
29
30 // create image object
31 java.awt.image.BufferedImage image = new java.awt.image.BufferedImage(300,300,java.awt.image.BufferedImage.TYPE_BYTE_INDEXED );
32 // get graphic context of image
33 java.awt.Graphics2D imgGraphics = image.createGraphics();
34
35 // draw barcode to specified location in Rectangle
36 barcode.draw(imgGraphics, new java.awt.Rectangle(0, 0, 300, 300));
37 }
Java Barcode supports: 2D / Matrix Barcode Symbologies: Data Matrix, PDF-417, QR-Code 1D / Linear Barcode Symbologies: Codabar, Code 11, Code 2 of 5, Interleaved 2 of 5, Code 39, Code 93, Code 128 EAN 128, EAN 8, EAN 13, UPC-A, UPC-E, ISBN, ISSN, ITF-14, Identcode, Leitcode, MSI Plessey, Onecode, Planet, Postnet, RM4SCC, |