Dynamsoft Developer Blog

A dot code is a 2D barcode symbology composed of disconnected dots. It is widely used in the tobacco industry. Recently, Dynamsoft rolled out barcode reader SDK v7.4, which added DotCode support. In this post, I will share a command-line app and a GUI app, demonstrating how t ...

This article shows how to integrate Java barcode SDKs - ZXing and Dynamsoft Barcode Reader - to different Java applications.Java Barcode AppsHere I have an image containing multiple barcodes.Configure the Maven dependencies for ZXing and Dynamsoft Barcode Reader:<repositor ...

There are many open-source and commercial barcode SDKs, but only a few of them can recognize multiple barcodes by scanning once. When you search Google for barcode SDK or Java barcode SDK, you will find Dynamsoft Barcode Reader SDK is always ranked in the top 5 of the search ...

Previously, I shared an article demonstrating how to use Camera2 APIs and Dynamsoft Barcode Reader to build a simple Android barcode reader app. In that demo project, the barcode decoding part is implemented in Java, which apparently has room for improvement. If we can get th ...

Assume you apply barcode technology to the logistics conveyor belt for scanning parcels. A problem you may face is how to recognize barcodes from blurred images. Although we can use advanced algorithms to deal with this complicated case, we’d better improve the image quality ...

Building Android camera apps is much more complicated than building iOS camera apps due to the different vendors and hardware specs. Since from API level 21, the old Camera class was deprecated and a brand-new Camera2 class was born. In this post, I want to use the least code ...

Some developers used JNA to call native C/C++ interfaces of Dynamsoft Barcode Reader in Java program. The app ran slowly and sometimes crashed. Based on the use case, I created a simple project for building JNA and JNI on Windows. The sample does not only show how to invoke n ...

The article is not about how to create Java native methods invoking C/C++ APIs. It aims to help developers to build a jar package containing JNI shared library, made with Dynamsoft Barcode Reader, for Windows, Linux, and macOS from scratch. I will demonstrate how to create JN ...

Kotlin, developed by JetBrain, is a statically typed programming language that compiles to Java code and JavaScript code. Recently, Google announced that Kotlin is a first-class language for writing Android apps. The big Android market will bring a promising future for Kotlin ...

Last week, I shared how to build a simplest React Native component from scratch. Now I want to do something more complicated. I will link Dynamsoft Barcode Reader SDK, which released as an AAR bundle file, to a React Native Barcode project and write some Java code as the brid ...

NV21 is the default image format used by Android camera. Assume you want to save the data and view it as a BMP file on PC, how to write code in Java without Android image APIs? Let’s do it from scratch.What is NV21NV21 is a kind of YUV (also be referred to as YCbCr) format us ...

Dynamsoft aims to make barcode SDK available for all mainstream platforms, including Windows, Linux, macOS, iOS, and Android. There are many developers devoted to developing mobile barcode scanner app for iOS and Android platforms. To expedite the developing work, some of the ...

When building mobile barcode scanning apps for Android or iOS, developers could either choose open source SDKs – ZXing and ZBar, or some commercial mobile barcode SDKs. If you are an Android developer and have installed Android Play Services SDK level 26 or greater, it is con ...

ZK is a Java Web framework that similar to GWT. Some developers have no idea how they can integrate DWT (Dynamic Web TWAIN) into a ZK Web project. I have successfully made it. The process is not too hard, but a little bit tricky.First ZK Web Project with Eclipse and Maven Ins ...

A few days ago, Dynamsoft Labs released Barcode Reader SDK for Linux. The SDK package provides two shared libraries for C/C++ programming. If you want to write code with high-level programming languages such as Java, you need to create a wrapper. In this post, I will illustra ...

I saw many posts arguing the performance winner between open-source barcode SDKs - ZXing and ZBar. As an engineer, who is developing commercial barcode reader software for Dynamsoft, I am curious about which open source project is better, ZXing or ZBar? Considering ZXing is i ...

Last week, Dynamsoft released Barcode Reader (DBR) SDK v2.0, which is available for Windows and Mac. The Windows installer contains Barcode libraries for ActiveX, C/C++, and .NET. If you are a Java developer, you have to use JNI to link native C/C++ libraries. In this tutoria ...

MongoDB is known as a NoSQL database, which uses a JSON-like document structure by key-value pairs. Comparing to the relational database like MySQL, MongoDB is easier and more scalable. Especially when processing big and complex data, MongoDB can perform faster and better. In ...

GWT (Google Web Toolkit), a development toolkit that allows developers to build complicated JavaScript Web applications in Java, has been used by many outstanding products, such as Google AdSense, Google AdWords, and so on. It is open source, and completely free. In this post ...

Dynamsoft OCR SDK is totally implemented in C++, which means it is easy to be wrapped in high-level programming languages, such as C#, Java, Python and so on. As a proprietary development SDK, so far, only .NET OCR library is available for commercial use. Because some of deve ...

Comparing to iOS, one of my favorite Android features is that Android supports USB peripherals. It’s fairly convenient to connect USB devices to Android smartphones via OTG cables. Therefore, no matter whether your Android phones, which probably only have 16G built-in storage ...

Tesseract is a well-known open source OCR engine that released under the Apache License 2.0. In this tutorial, I’d like to share how to build the OCR library for Android, as well as how to implement a simple Android OCR application with it. Ads Powered by DynamsoftTesseract A ...

Some Java developers asked a question about how to use Dynamic Web TWAIN (DWT) to upload image files when building a Web application with Struts. In this tutorial, I’d like to make a detailed explanation.How to Upload Files with StrutsUsing NetBeans IDE, we can quickly create ...

When you are scanning tons of documents with your scanner applications, probably you don’t have enough time to take a break sometimes. Because you need to stare at the screen for checking all scanning information in case of some errors. Fortunately, mobile applications can he ...

If you have a TWAIN-compliant scanner, you can easily control it with Dynamic Web TWAIN or Dynamic .NET TWAIN. Both SDKs can help you create some excellent applications for document scanning and management on PCs. However, have you ever complained that it’s so inconvenient to ...

Java Native Interface (JNI) is the glue between Java and native code such as C, C++, and assembly. With JNI, Java applications are capable of supporting platform-specific features. JNI enables developers to call low-level APIs (e.g. SQL, OpenGL etc.) to make Java application ...

When you are going to purchase a new smartphone like iPhone 6 or Galaxy S5, don’t just throw your old devices away. Via socket connection, we can build a remote monitoring system with obsolete mobile devices instead of purchasing expensive Webcams or wireless cameras. In this ...

In the previous articles, I shared how to implement a .Net WebSocket server with SuperWebSocket. Today, I’d like to continue the series WebSocket: How-to, talking about how to implement a WebSocket server in Java.What is Jetty?“Jetty provides a Web server andjavax.servlet con ...

Dynamic .NET TWAIN is one of the excellent TWAIN-compliant SDKs for document scanning and image capture. In this tutorial, I would like to share how to create a bridge to convert .NET TWAIN C# methods to Java methods in order to help Java developers easily implement Java TWAI ...

Since we have known how to check PageRank in Java, let’s strengthen our tool by adding the functionality of checking Alexa rank today.To get the Alexa rank, you can use following code or read the excellent tutorial.import java.io.InputStream;import java.net.URL;import java.ne ...

Previously, I talked about how to check PageRank in Java. In this article, I will combine PageRank with Excel files. To operate Excel files in Java, I used Apache POI - the Java API for Microsoft Documents. Apparently, you can download the API package, and follow the relevant ...

In this article, I am not going to go in-depth about Java and Swing. The content I will share in this article is about how to combine slices of knowledge to make a simple java tool for checking PageRank. In my previous article, I talked about how to extract domain names from ...

A few days ago, Dynamsoft released its first open source software –Mergehero on SourceForge. It is a comparison tool for differing and merging files. The software complies with the GPL license that gives developers rights to access, modify, and redistribute source code.What i ...

This article is a part of WCF & Java InteropSCM Anywhere is a comprehensive tool and uses various C# data types, including lists. You may doubt whether Java can recognize these C# data types. Actually, WCF uses Web Services Description Language (WSDL) to describe services ...