- #CREATE QR CODE WITH TEXT INSIDE HOW TO#
- #CREATE QR CODE WITH TEXT INSIDE DOWNLOAD#
Or add the following dependency in pom.xml file.
#CREATE QR CODE WITH TEXT INSIDE DOWNLOAD#
We can download it from the official site.Īfter downloading, add it to the classpath. Before moving towards the Java program, we need to add the ZXing library to the project. With the help of the library, we can easily generate and read the QR code. It is a popular API that allows us to process with QR code. To generate a QR code in Java, we need to use a third-party library named ZXing (Zebra Crossing). The number of rows and columns depends on the version number. Also, notable that the QR code contains an equal number of rows and columns. Therefore, stores the higher information. Note: As the version number varies, the number of rows and columns also varies. Maximum Character Storage CapacityĠ-9, A-Z (upper-case only), space, $, %, *, +,. 4 × version number + 17 dots on each side).
The version denotes the dimensions of the symbol (i.e.
Version (1 to 40 different sizes of QR). The data storage capacity of a QR code depends on the following three: How much data can be stored in the QR code? The following QR code represents the 7% error correction. There are four levels of error correction: Error Correction Levels and their Capability So, we need to adjust the level of error correction according to requirements. It is to be noted that if we add error correction, it increases the number of the data block in the QR code. The Reed-Solomon Correction algorithm makes it possible. It helps the scanner to decode the data entered by the creator.Ī QR code can be scanned even if it is damaged somewhat (up to 30%). It helps the scanner to identify the version number of the QR code. Level of Error Correction and masks pattern. It helps the scanner to identify the types of content such as text, URL, etc. It helps the scanner to identify the reference point for alignment. It separates data from the finder pattern. The sixth row and column in the QR code are dedicated to the timing pattern. It helps the scanner to identify the position of rows and columns. It is also known as finder patterns or position markers. The white space around the QR code represents the quiet zone. The following table describes each component with their work. The following figure depicts the components of QR code. These components further divided into small components. There are the two primary components of QR code i.e. The following figure describes the structure of the QR code and its elements. After that, the data is extracted from the patterns that are stored in horizontal and vertical components of the code. After scanning, it processes the QR code using the Reed-Solomon Error Correction Code until the image interpreted. We scan the QR code through an imaging device such as a camera. The Placing of data bits starts from the bottom right corner and moves in an upward direction and changes the position while reach at the top. Modules are arranged in the row and columns that are called Data Matrix. QR code is made up of modules (black and white squares) that contain the encoded data. The Quick Response system became popular outside the automotive industry due to its fast readability and greater storage capacity compared to standard UPC barcodes. These standard encodings modes store data effectively. It uses the following four standardized encoding modes: It is used to store information such as text, webpage, URL, etc. We need not to carry any handheld device for scanning. The advantage of a QR code is that it can be scanned by smartphones. The grid arrangement of the black squares on a white background that can be read by an imaging device is called a QR code. #CREATE QR CODE WITH TEXT INSIDE HOW TO#
In this section, we will learn how to generate and read QR code in Java by using the ZXing library. Nowadays, it's being used a lot in every field such as GEO location, on products, vehicle tracking, etc. It contains the matrix of small squares in which information is stored. It is an alternative to bar code or we can say that it is a two-dimensional bar-code. The QR code is shortened for Quick Response code.
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