Java QR Code Generator Tutorial
Generate, create 2d barcode QR Code images in Java Class, JSP Pages, Servlet, Jasper Report
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Purchase Java Barcode Generator SDK License
This Java Barcode Generator proves very helpful for our project. Thanks a lot!
- Charly Nelson

Generate, Create, Print, Draw QR Code barcode in Java projects

  • Easy to Generate QR Code in Applet, Java class, Swing, JavaBean, J2SE applications
  • Create QR Code 2d barcode in JSP, Java Servlet, EJB, Tomcat, JBoss, J2EE server side applications
  • Print, draw QR Code barcode images in Eclipse BIRT, iReport, Jasper Reports Java reporting software
  • Generating & encoding industry standard QR Code Bar Code images in EPS, PNG, GIF, JPEG formats
  • Compatible with latest ISO / IEC 18004 (2nd edition 2006-09-01)
  • Completely written and created in Java. Support JDK 1.4.2 and later versions
  • Simple to redistribute Java QR Code barcode library SDK. No registration key or activation code required.
  • Reliable Java library component for QR Code generation

Java QR Code Generator Introduction
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.

You can download the Java Barcode creator library SDK trial package to create QR Code barcodes in your Java projects. The download the package includes compiled Java barcode generation SDK (a single Jar file), detailed tutorial for creating barcodes in Java, and complete sample Java source code to generate QR Code in Java class. Using downloaded Java barcode generation SDK, you can also easily create and print
Data Matrix, PDF417, Code 39, Code 128, EAN, UPC, and other linear and 2d barcodes.

Barcode QR Code Introduction

QR Code is a matrix code (or two-dimensional bar code) created by Japanese corporation Denso-Wave in 1994. The "QR" is derived from "Quick Response", as the creator intended the code to allow its contents to be decoded at high speed.

Java QR-Code Generator - Valid Data Scope

Java QR Code Generator encodes:
  • numeric data (digits 0 - 9);
  • alphanumeric data (digits 0 - 9; upper case letters A -Z; nine other characters: space, $ % * + - . / : );
  • byte data (default: ISO/IEC 8859-1);
  • Kanji characters.
How to Generate QR Code in Java Class?
You can copy the demo code into your barcoding project to easily generate QR Code in Java Class. For more detailed QR Code settings, please click here for complete Java QR Code Generator Demo Source Code
// Create Java QRCode object 
QRCode barcode = new QRCode();

// Set QRCode data text to encode

// Generate QRCode barcode & print into Graphics2D object
barcode.drawBarcode("Java Graphics2D object");

// Generate QRCode barcode & encode into GIF format

// Generate QRCode barcode & encode into JPEG format

// Generate QRCode barcode & encode into EPS
How to Create QR Code Image in Html or JSP Pages?
  1. Under demo package, copy barcode folder and its contents to your tomcat.
  2. Start tomcat, navigate to http://YourDomain:Port/barcode/barcode?DATA=QRCodeEncodingData&TYPE=qrcode
  3. To create bar code images in html or jsp pages, you can insert a image tag (img) into your page.
  4. For example, <img src="http://YourDomain:Port/barcode/barcode?DATA=QRCodeEncodingData&TYPE=qrcode" />
How to Generate QR Code Image in Java Servlet Class?
import com.onbarcode.barcode.AbstractBarcode; 
import com.onbarcode.barcode.QRCode;
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 {
QRCode barcode = new QRCode();

ServletOutputStream servletoutputstream = response.getOutputStream();

response.setHeader("Pragma", "no-cache");
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);

// Generate QRCode barcode & output to ServletOutputStream

} catch (Exception e) {
throw new ServletException(e);
How to Generate & Print Barcode QR Code Image in Jasper Reports?
OnBarcode provides detailed guide to help developers generate barcodes in Jasper Reports
How to Generate & Print Barcode QR Code Image in iReport?
With this Java barcode generator, you can also create, print bulk QR Code barcode images in iReport. Here is the detailed generation guide for you: Complete Guide for Barcode Generation in iReport
How to Generate & Print Barcode QR-Code Image in Eclipse BIRT?
How to Set Generated Barcode QR-Code Image Width and Height?
  1. You can set barcode image width and height through properties barcodeWidth and barcodeHeight values.
  2. Or you can set X (bar module width) and Y (bar module height) values
Java QR Code Generator - Barcode Property Settings
Java QR Code Generator in Java Class: com.onbarcode.barcode.QRCode

Category Properties Value Comments
Basic Property: data
Type: String
Default: ""
Barcode value to encode

QRCode Valid Data Char Set:
  • numeric data (digits 0 - 9);
  • alphanumeric data (digits 0 - 9; upper case letters A -Z; nine other characters: space, $ % * + - . / : );
  • byte data (default: ISO/IEC 8859-1);
  • Kanji characters

Property: processTilde
Type: boolean
Default: true
Set the processTilde property to true, if you want use the tilde character "~" to specify special characters in the input data. Default is true.
  • 1-byte character: ~0dd/~1dd/~2dd (character value from 000 ~ 255); ASCII character '~' is presented by ~126
    Strings from "~256" to "~299" are unused
  • 2-byte character (Unicode): ~6ddddd (character value from 00000 ~ 65535)
    Strings from "~665536" to "~699999" are unused
  • for GS1 AI Code:
    ~ai2: AI with 2 digits
    ~ai3: AI with 3 digits
    ~ai4: AI with 4 digits
    ~ai5: AI with 5 digits
    ~ai6: AI with 6 digits
    ~ai7: AI with 7 digits
  • ECI: ~7dddddd (valid value of dddddd from 000000 to 999999)
  • SJIS: from ~9ddddd (Shift JIS 0x8140 ~ 0x9FFC and 0xE040 ~ 0xEBBF)
Property: dataMode
iReport & URL: DATA-MODE
Type: int
Default: 0 (QRCode.M_AUTO)
  • QRCode.M_AUTO (0): It allows encoding all 256 possible 8-bit byte values. This includes all ASCII characters value from 0 to 127 inclusive and provides for international character set support
  • QRCode.M_ALPHANUMERIC (1): It allows encoding alphanumeric data (digits 0 - 9; upper case letters A -Z; nine other characters: space, $ % * + - . / : ).
  • QRCode.M_BYTE (2): It allows encoding byte data (default: ISO/IEC 8859-1).
  • QRCode.M_NUMERIC (3): It allows encoding numeric data (digits 0 - 9).
  • QRCode.M_KANJI (4): It allows encoding Kanji characters.
Property: ECL
iReport & URL: ECL
Type: int
Default: QRCode.L (0)
QRCode Error Correction Level.
  • QRCode.ECL_L (0)
  • QRCode.ECL_M (1)
  • QRCode.ECL_Q (2)
  • QRCode.ECL_H (3)
Property: fnc1Mode
iReport & URL: FNC1MODE
Type: int

Default: IBarcode.
To encode GS1 compatible QR-Code barcode, you need set fnc1Mode value to IBarcode.FNC1_ENABLE (1).
Property: structuredAppend
Type: boolean
Default: false
Set StructuredAppend property to true, then Structured Append is enabled.
Property: symbolCount
Type: int
Default: 0
the number of total symbols which make the sequence.
Property: symbolIndex
Type: int
Default: 0
the position of current symbol in the secuence (Start with 0).
Property: parity
iReport & URL: PARITY
Type: int
Default: 0
Property: version
iReport & URL: VERSION
Type: int
Default: 1.
Valid values are from 1 to 40.
Property: autoResize
Type: boolean
Default: false
Auto resize the generated barcode image
Property: barAlignment
Type: int
Default: 1 (center)
Barcode horizontal alignment inside the image. 0: left, 1: center, 2: right.
Property: uom
iReport & URL: UOM
Type: int
Default: 0 (pixel)
Unit of meature for all size related settings in the library.
Valid values: 0: pixel; 1: inch; 2: cm.
Property: X
iReport & URL: X
Type: float
Default: 3.
Barcode bar module width and height, default is 3 pixel
Property: barcodeWidth
Type: float
Default: 0.
Barcode image width.

If barcodeWidth setting is smaller than the barcode required minimum width, the library will automatically reset to barcode minimum width.
Property: barcodeHeight
Type: float
Default: 0.
Barcode image height.

If barcodeHeight setting is smaller than the barcode required minimum height, the library will automatically reset to barcode minimum height.
Property: leftMargin
Type: float
Default: 0.
Barcode image left margin size.
Property: rightMargin
Type: float
Default: 0.
Barcode image right margin size.
Property: topMargin
Type: float
Default: 0.
Barcode image top margin size.
Property: bottomMargin
Type: float
Default: 0.
Barcode image bottom margin size.
Property: resolution
Type: int
Default: 72.
Barcode image resolution in DPI (Dots per inch).
Property: rotate
iReport & URL: ROTATE
Type: int
Default: 0 (IBarcode.ROTATE_0)
Valid values:

  • 0 (IBarcode.ROTATE_0)
  • 1 (IBarcode.ROTATE_90)
  • 2 (IBarcode.ROTATE_180)
  • 3 (IBarcode.ROTATE_270)
Property: backColor
Type: Color
Default: white
Barcode image background color
Property: foreColor
Type: Color
Default: black
Barcode image foreground color
In WebStream query string, please use int value for Enums, "true" and "false" for bool.
Java Barcode Generator Supporting Barcode Symbology Types
Barcode for Java - Bar Code Types Geneation
OnBarcode is a market-leading provider of barcode imaging generator, reader controls and components for ASP.NET, Windows Forms, WPF, as well Java, Android, iOS (iPhone, iPad) across all major enterprise development platforms. We provides comprehensive tutorials and how-tos for various linear, 2d barcode information, such as C# in ASP.NET, C# .NET, C# Barcode Encoding, C# Barcode Image, VB.NET in ASP.NET, VB.NET Winforms, VB.NET Barcode Encoding. OnBarcode barcode products are supported by RasterEdge ASP.NET Document Viewer, which supports ASP.NET PDF Viewer, ASP.NET MVC Document Viewer, ASP.NET PDF Editor, MVC PDF Viewer. And provide high quality C# Convert PDF to Tiff, C# Convert PDF to Word, C# Convert PDF to HTML, C# Convert PDF to Jpeg images, and their easy and simple documents, like C# PDF SDK, C# extract text from PDF, C# Compress PDF, Print PDF in C# and C# extract image from PDF.
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