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Operating Systems - Introduction

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Introduction Operating system placement An operating system (OS) is a software that manages hardware and software resources and provide common services for computer programs. Operating systems performs all the basic tasks of the computer like process management, memory management, file management, handling input and output and controlling peripheral devices such as disk drives and printers. Before go into further details, let's look into history of operating systems. History The First Generation (1945–55) Vacuum Tubes and Plugboards The electronic computers first introduced in 1940s were run without any operating systems. They were designed, built, programmed, operated and maintained by a single group of people. They were programmed in absolute machine language, the basic functions of the machine were controlled usin...
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JAudioTagger - ID3 tagger library

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        JAudioTagger is an audio tagging library written in Java language. It currently fully supports Mp3 , Mp4 (Mp4 audio, M4a and M4p audio) Ogg Vorbis , Flac and Wma , there is limited support for Wav and Real format. Features of JAudioTagger Provide a generic interface for the most popular thirty attributes for all the fully supported formats Supports reading and writing of mp4,m4a and mp4p (protected) files, including multiple images and reverse dns fields Supports Multiple Page Ogg Vorbis Comments Supports MP3 ID3v1,ID3v1.1, ID3v2.2, v2.3 and v2.4 are transparently Allows easy conversion between ID3 tag versions Supports Flac, including embedded and linked image support Provides proper object representations of most fields, rather than a simple byte representation Fully supports Unicode Text Encoding Is being actively developed and supported Uses an automatic testsuite to ensure code compatibility betweens versions Uses a Co...
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Flutter - Create Image Container with Round Corners and Splash Effect

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Introduction In this article I'm going to explain you about how image with round corners and splash effect is created using Flutter widgets. Before doing some coding, let's see how images are loaded in Flutter and what the splash effect means. Images in flutter In flutter apps, we can load images from network, assets (App resources) or from the file system. Loading images from network is very easy task in flutter using Image.network constructor. Image.network( 'https://raw.githubusercontent.com/flutter/website/master/src/_includes/code/layout/lakes/images/lake.jpg', ) If you want to load images from network and cache it for offline usage, you can use CachedNetworkImage widget. You need to add cached_network_image dependency to use it. Click here to see installation instructions. CachedNetworkImage( placeholder: CircularProgressIndicator(), imageUrl: '...
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Maven - Create Executable Jar

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In this article we focus on how executable jar file is created in maven project. Usually we want to create java package and run it without specifying classpath of the main class that we want to execute. For this purpose we want to specify application entry point in the Jar manifest as follows. Manifest-Version: 1.0 Created-By: 1.7.0_06 (Oracle Corporation) Main-Class: MyPackage.MyClass So that we can execute our jar file in the terminal as follows. java -jar MyJar.jar Configuration We have to configure our pom.xml file and set packaging property as jar. <groupId>com.udara</groupId> <artifactId>tcp-client</artifactId> <version>1.0-SNAPSHOT</version> <packaging>jar</packaging> In maven we can configure jar manifest using plugins. Here we talk about few p...
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