Java Source Code Generator
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Open source code under the permissive MIT License. The Java language version of the QR Code generator library is considered to be the master reference version. The JavaScript, TypeScript, Python, C++, and Rust versions are ported from the Java version, with a balance between writing idiomatic code in the target language but also not. Java Barcode Generator generate barcodes in Java Class, J2SE applications. Generate barcodes in Java Servlet, J2EE web applications. Generate barcodes in Java Reporting applications.

Core Java » on Nov 17, 2012 { 14 Comments } By Sivateja

Let us see how to generate Barcodes with java, we have different types of barcodes, among them i am going to explain about ‘Code 128‘ type ðŸ™‚

Files Required

BarCode128Java4s.java
iText.jar [ Make sure you have iText jar file in your class path ]
Install Barcode scanner in your Smart Phone to test, whether its working perfectly or not

BarCode128Java4s.java

Explanation

I am going to explain much about iText API as we already explained clearly at Creating PDF with Java and iText

At line number 19, specifying my output file
At line number 24,25,26 created Barcode128 class object and added required data to be appeared in my Barcode
That’s it.

Mobile Output

Its working fine ðŸ˜‰

::. About the Author .::

Sivateja Kandula - Java/J2EE Full Stack Developer

Founder of Java4s - Get It Yourself, A popular Java/J2EE Programming Blog, Love Java and UI frameworks.
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Author: Nathan Willis

You’ve probably seen them: black and white checkerboard-patterned matrices printed on labels and other real-world objects that you can optically scan with a cameraphone or other handheld device to extract an encoded message. But although 2-D barcodes (as they are known) are getting more common, working with them is still a bumpy road for the Linux and free software crowd. Fortunately, several options exist for reading and generating them with open source software.

Unfortunately, there are dozens of 2-D barcode formats in the wild. From a technical standpoint, they fall into two general groups: stacked linear and matrix. Stacked linear codes are like traditional 1-D barcodes (a la UPC codes on retail box packaging), but with multiple lines of information. Visually, the black and white lines are elongated, so they look similar to 1-D barcodes. Matrix codes, on the other hand, tend to use square or circular dots instead of lines to encode their information. The most common matrix formats use square grids containing black and white squares, but there are plenty of variations — including hexagonal, angular, and multicolor patterns.

A feature common in most matrix code formats is orientation-independence: the matrix contains markers that code-reading software can use to determine which direction in the scanned image is up. On the downside, reading a matrix code usually requires a camera that can capture the entire matrix at once. In contrast, many stacked linear codes can be read one line at a time, with cheaper laser scanners.

The barcode entry at Wikipedia contains a list of many current and historical 2-D barcode formats, but is light on detail. A better in-depth guide is available from Russ Adams, and includes important information such as the patent status and openness of each format. The majority of formats are proprietary and under patent control of a single company. In many cases, the company in question sells an all-in-one inventory tracking, watermarking, or data archiving solution based around the format. Xerox’s Dataglyph, for example, is designed to blend into the background of a printed document, to facilitate hiding tracking codes in direct marketing materials and “anonymous” surveys.

Java Source Code Generator

Several of the oldest codes have outlived their patent terms, including the stacked linear Code 16K and Code 49, and UPS’s matrix code MaxiCode (recognizable by the circular “bullseye” pattern in the center). Others, such as Aztec Code (featuring a square “bullseye” in the center) and the newer Supercode and Ultracode formats, are patented, but have published specifications that you can purchase from various standards organizations, most notably the Association for Automatic Identification and Mobility (AIM).

Since the standards approval process is often long and intellectual property requirements vary from organization to organization, whether or not you can implement one of these patented standards without purchasing a patent license varies from case to case.

Fortunately, the three most common formats have simpler terms of use, and they are better supported by free software. PDF417 is the granddaddy of the bunch — a stacked linear format that you will find on many shipping labels, including the US Postal Service and FedEx. Despite the similarity in names, PDF417 is not related to Adobe Portable Document Format. A related standard, MicroPDF417, is a simplification of the format that uses a reduced character set and can be used to generate smaller codes when space is at a premium. In 2004, PDF417’s creator Symbol Technologies issued a press release denoting the standard as public domain.

The formats you actually care about

As popular as PDF417 is for industrial usage, the trendiest formats today are without a doubt Data Matrix (DM) and Quick Response (QR) Code; if you see a 2-D barcode on an advertisement, beckoning you to snap a picture of it with your cameraphone, chances are it is one of these two formats.

Both DM and QR Code are black and white matrix codes that appear in square arrays, and use square tiles to encode information. You can distinguish between them by their orientation patterns. DM blocks have a solid black border on two adjacent sides (forming an “L”), and an alternating black and white border on the other two sides. QR Code arrays have no border, but feature prominent square bullseyes, one in each of three corners.

DM was created by a subsidiary of engineering giant Siemens, and is commonly used to mark integrated circuits and other small electronic components. The original patent on the format has expired. QR Code was created and patented by Japanese firm Denso Wave, which publicly advertises that it will not exercise its patent rights. Originally used in manufacturing, QR Code is popular in Japan, and is making its way around the globe.

Since both DM and QR Code are matrix formats, they are easy to read with increasingly ubiquitous cameraphones, and their compact size makes it easy to encode URLs and email addresses that can be handed off automatically to a mobile browser or mail client.

Like most formats, DM and QR Code arrays can vary in size depending on the size of the encoded content. Both are very compact. While a PDF417 symbol can encode around 1,800 alphanumeric characters, a DM symbol can encode 2,335, and a QR Code symbol up to 4,296. They also have flexible error-correction available, which can make the resulting symbols more resistant to scratches, marks, and smudges on the printed page.

Makin’ codes

How can 2-D barcodes help you? Well, suppose you want to generate a code that translates to a link to your Web site, for example, that you can then paint on your roof or stitch into your T-shirt. The simplest way to do so is with one of the plentiful free online utilities. Many are provided by companies like Kaywa and Nokia that are interested in propagating cellphone-readable codes, but others, like invx.com and the Barcode Writer in Pure PostScript, are noncommercial.

The majority of the Web alternatives focus exclusively on DM and QR Code, although a few branch out. For example, both the Pure PostScript Writer and Tec-it can produce MaxiCode, which is a relative rarity. If you try more than one symbol generator, you will soon discover that the same string can be encoded in several different ways even with a single format, thanks to the variety of error-corr

Barcode Generator Open Source Java