Java QR Code Generator Data Encoding Tutorial

sample source code to input valid data and generate 2D QR Code images in Java


  • Easily generate high quality QR Code images on any operating system with a JVM
  • Servlets, Applets, JavaBean and class library are provided in QR Code generator for Java
  • Permanent license with the purchase of the developer license
  • Generate barcodes which can be added to Oracle Reports and Crystal Reports
  • Compatible with JDK 1.4 or greater
  • Servlets are compatible with all browsers, easy to embed in HTML as an image with the tag and can be used to add server-side barcode generator capability to a dedicated Web server
  • Applets may be used to easily display barcodes in Web pages with compatible Web browsers
  • Valid character set and available data length can be referred in the QR Code page
  • Encoding QR Code valid data set to generate valid QR Code images in Java applications

As a Java 2D barcode generation component, QR Code generator in java provides full solution on QR Code size setting, image setting as following.

Java QR Code size setting properties implementation such as X, Y, barcodeHeight, barcodeWidth, etc can be found here;

Java QR Code image setting properties implementation such as backColor, foreColor, resolution, ets can be fonud here.


Java QR Code Basic Information

Java QR Code generator is a mature and reliable Java barcode generation component for creating QR Code barcodes in Java, Jasper Reports, iReport, and Eclipse BIRT projects. High-quality QR Code barcode images can be drawn and printed into GIF, BMP, PNG, JPEG/JPG & TIFF formats with Java QR Code barcode generator. Rich barcode options are provided to customize QR Code barcode properties in accordance with your needs.

QR Code Overview

QR CodeQR Code, also known as Denso Barcode, QRCode, Quick Response Code, is a very popular, two-dimensional (2D) barcode symbology, was first developed by Deso Wave Corporation in 1994 for manufacturing, and quickly became popular because of its fast readability and large storage capacity. It is made up of a square area with a white background and black modules in it. Any type of data information can be encoded, such as characters, numbers and text.

Valid Data Set to Encode QR Code in Java

  • Numeric Letters: 0 - 9;

  • Alphanumeric Data: degits from 0 - 9; uppercase letters from A - Z; special letters(space, $ % * + - . / :);

  • Byte Data: default is ISO/IEC 8859-1;

  • Kanji Characters.

Valid Data Length in Java

Java QR Code is a famous 2D barcode type for Java Barcode Generator which can encode variable data length to generate high quality QR Code images with Java applications.


Java QR Code Data Encoding Details

Encode Only Numeric Data for Java QR Code

      QRCode barcode = new QRCode();
barcode.setData("7878787878");

Encode Only Alphanumeric Letters for Java QR Code

      QRCode barcode = new QRCode();
barcode.setData("JAVA-1234");

Encode Only Byte Digits for Java QR Code

      QRCode barcode = new QRCode();
barcode.setData(":/.+");

Encode Only Kanji Digits for Java QR Code

Java QR Code generator allows encoding Kanji characters. Please see SJIS (Shift JIS encoding): from ~9ddddd (Shift JIS 0x8140 ~ 0x9FFC and 0xE040 ~ 0xEBBF)

      QRCode barcode = new QRCode();
barcode.setData("~937727");
//Set the processTilde property to true, if you want use the tilde character "~" to specify special characters in the input data. Default is true.
barcode.setprocessTild(true);

Encode Vriable Data Length for Java QR Code

For QR Code storage capability in Java, here is a list for all kings of data type maximum encoding data length.

  • Alphanumeric Data: 4,296 characters

  • Numeric Data: 7,089 characters

  • Byte Data: 2,953 characters

  • Kanji Character: 1,817 characters




OnBarcode is a market-leading provider of barcode 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 high quality tutorials and guides for various linear, 2d barcode information, such as C# Barcode, QR Code C#, QR Code VB.NET, QR Code ASP.NET, QR Code .NET, ASP.NET Barcode. OnBarcode barcode products are supported by RasterEdge .NET HTML5 Document Viewer 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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