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Articles on Trending Technologies
Technical articles with clear explanations and examples
How to parse a JSON string using Streaming API in Java?
The Streaming API consists of an important interface JsonParser and this interface contains methods to parse JSON in a streaming way and provides forward, read-only access to JSON data. The Json class contains the methods to create parsers from input sources. We can parse a JSON using the static method createParser() of Json class.Syntaxpublic static JsonParser createParser(Reader reader)Exampleimport java.io.*; import javax.json.Json; import javax.json.stream.JsonParser; import javax.json.stream.JsonParser.Event; public class JSONParseringTest { public static void main(String[] args) { String jsonString = "{"name":"Adithya", "employeeId":"115", "age":"30"}"; JsonParser parser = ...
Read MoreThe magnitude of big data
Large volumes of structured and unstructured data are essentially referred to as ‘Big Data;’ and is produced by almost all sources around us such as social media exchange, digital processes, mobile devices, sensors etc. Big Data provides insights into patterns, trends, and correlations with other entities in the business world. Big Data swamps businesses on a regular daily basis, and due to the speed and accuracy with which it is analyzed, it leads to enhanced and accurate decisions via tactical business steps. As it is variable and complex and comes from various sources, it is imperative to connect it and ...
Read MoreDefining internet of things iot for businesses
In today’s world, the biggest technology trend is the ‘Internet of Things (IoT);’ and true enough it is defining our lives, the way we work; shaping and influencing businesses, and governments too. It is the ‘next big thing’ or is simply being termed as a revolution/progression of the web, and is being touted as far bigger than anyone has been able to fathom in technology, where machine to machine and man to machine interaction is moving towards new heights.GuesstimatesIt is estimated that by 2020 there will be around 26 billion devices (as per the firm Gartner) that will be connected ...
Read MoreHow to create a JSON Object using Object Model in Java?
The javax.json.JsonObject interface can represent an immutable JSON object value and provides an unmodifiable map view to the JSON object name/value mappings. A JsonObject instance can be created from an input source using the static method readObject() of javax.json.JsonReader class and also can be created using the static method createObjectBuilder() of javax.json.Json class.Syntaxpublic static JsonObjectBuilder createObjectBuilder()Exampleimport java.io.*; import javax.json.*; public class JsonObjectTest { public static void main(String[] args) throws Exception { JsonObjectBuilder builder = Json.createObjectBuilder(); builder.add("Name", "Adithya"); builder.add("Designation", "Python ...
Read MoreFind my public ip address from linux command line
An IP address stands for Internet Protocol Address. Devices are assigned with specified IP Address to identify the device which are connected on internet. Public IP addresses are routable on Internet and are generally provided by an ISP (Internet service provider) which are accessible over the Internet.Do you know how to find public IP address from Linux command line? There are several ways to find and identify public IP address. For example, we can use third party websites or “shell” commands. This article provides simple methods to find public IP address from command line on Linux.Who Uses Public IP Addresses?Public ...
Read MoreCount the number of threads in a process on linux
Linux process can be visualized as a running instance of a program where each thread in the Linux is nothing but a flow of execution of the processes. Do you know how to see the number of threads per process on Linux environment? There are several ways to count the number of threads. This article deals with, how to read the information about processes on Linux and also to count the number of threads per process.Read Process InformationTo read the process information use ‘ps’ command. This command is used to read a snapshot of the current processes on Linux. However, ...
Read MoreMobile ip a complete solution for emerging communications
The world is now embracing connectivity and communication like never before through the application of various mobility based devices. Mobile computing devices such as mobile phones, palmtops etc. have become a part of our daily routine as they are convenient and effective to use.Mobile IP (Internet Protocol) serves the needs of the burgeoning population of mobile computer users who wish to connect to the Internet and maintain communications as they move from place to place.Mobile IP (or MIP) is an Internet Engineering Task Force (IETF) standard communications protocol that is designed to allow mobile device users to move from one network ...
Read MoreGetting started with coding
Looking to explore the world of online programming? then, there is good news to all of you!! Currently, there are few online programming websites which offer free services. Tutorialspoint is one such provider. Few years back, Tutorialspoint.com started compiler online service and based on the excellent response, the company has enhanced the service which is renamed as “Coding Ground”. It is a one stop solution for aspiring programmers and IT professionals to start coding in their relevant software without any installation requirement.The biggest technology innovators like Google, Microsoft or Amazon were built due to the consistent effort of programmers as ...
Read MoreImportance of the accumulate() method of JSONObject in Java?
A JSONObject is an unordered collection of a name and value pairs. A few important methods of JSONArray are accumulate(), put(), opt(), append(), write() and etc. The accumulate() method accumulates the values under a key and this method similar to the put() method except if there is an existing object stored under a key then a JSONArray can be stored under a key to hold all of the accumulated values. If there is an existing JSONArray then a new value can be added.Syntaxpublic JSONObject accumulate(java.lang.String key, java.lang.Object value) throws JSONExceptionExampleimport org.json.*; public class JSONAccumulateMethodTest { public static ...
Read MoreHow to convert a JSON object to an enum using Jackson in Java?
A JSONObject can parse the text from String to produce a Map kind of an object. An Enum can be used to define a collection of constants, when we need a predefined list of values which do not represent some kind of numeric or textual data then we can use an enum. We can convert a JSON object to an enum using the readValue() method of ObjectMapper class.In the below example, we can convert/deserialize a JSON object to Java enum using the Jackson library.Exampleimport com.fasterxml.jackson.databind.*; public class JSONToEnumTest { public static void main(String arg[]) throws Exception { ...
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