Sunday, 22 July 2018

10 Surprising Ways You Can Use Java


10 Surprising Ways You Can Use Java

According to most calculations, Java is currently the most popular programming language for all sorts of purposes, which means there’s a huge variety of job choices and interesting money-making opportunities for engineers who specialize in it.
When considering what you can do with Java, many developers think of building:
java logo
  • Application servers
  • Web applications
  • Unit tests
  • Mobile applications
  • Desktop applications
  • Enterprise applications
That’s a good list, but it doesn’t begin to cover the incredible range of things you can do with Java. For example, many developers use Java to create games and tutorials. And Java often figures into cross-language development with products such as JNBridge, which means that your Java experience can come in handy even if you’re not writing pure Java applications.
Just look around a bit—there’s a good chance Java developers can find work that actually makes it fun to go to work in the morning. If you need inspiration, check out these 10 surprisingly cool ways to earn a living with Java:

1. Working in the cloud

As they do with many languages, software developers use Java to build cloud-based application services, web APIs, client applications, and so on. It’s not just that Java is useful for creating new applications in the cloud or moving existing applications to the cloud. But Java’s proven ability to work anywhere fits perfectly into the modern mix of cloud, mobile, and desktop applications designed to function the same way no matter where they happen to be running. There is also no lack of AV/VR apps out there (many of which are mobile apps) that all rely on cloud-based resources.
Companies such as Belatrix specialize in cloud-development outsourcing, and Heroku provides Java-specific cloud services. Or imagine creating an app that will help users see on their phone, tablet, or other device what their hair will look like when restyled. According to ITFirms, many top Java development companies are involved in cloud-based work with a broad range of high-profile clients (think organizations like Nestlé, the United NationsUniversal StudiosJaguar, and others).
Especially important for cloud development is unit testing using simulations in a process called “mocking,” in which software objects are used to simulate real-world objects and determine whether unit tests pass or fail. One of the most useful and commonly used packages for mocking is Mokito, which is Java-based. You can leverage combined Mokito and Java skills to perform unit testing of all sorts of applications and devices—imagine unit testing robots, satellites, or IoT devices that rely on cloud resources to work.

spaceship2. Exploring space at NASA

The National Aeronautics and Space Administration (NASA) uses Java for a number of interesting applications. A personal favorite is World Wind, a software development kit (SDK) that lets you zoom in from outer space and examine any location on earth. The data source is a combination of Landsat satellite imagery and Shuttle Radar Topography Mission data. An amazing 90 example applications show how to use this SDK—wouldn’t it be awesome to work on the code that makes it all possible? And in a blog post on developing NASA’s mission software with Java, four top NASA engineers detail the role Java played in various space missions.
NASA is always creating interesting new products, so keep an eye on Ames Research Center news. You can find a list of job openings for NASA at a number of sites, such as Indeed.

3. Working with the Internet of Things

You probably hear a lot about the Internet of Things (IoT) these days. The IoT is everywhere, from sensors in massive industrial machinery to smart-house devices like security cameras. In fact, did you know that the popular Nest thermostat relies on an interesting mix of Java and AI? Some smart vending machines are Java based, using software to track inventory, temperature, humidity, and location. In addition, many wearable technology applications are built in Java.
Want to find out more about using Java to create IoT functionality? Check out Jaxenter for info on why Java is the best language to use for IoT, and Customer Think to learn more about all the skills and resources needed to make IoT happen.

4. Developing self-driving cars

One of the more interesting and demanding uses of technology today is the self-driving car. Sure, you have to create robotics that can steer the vehicle and place the right assortment of sensors to help the car avoid collisions, but some of the most interesting work uses technology to perform tasks that humans consider more or less mundane. Still, to put self-driving cars on public roads, developers need to combine all of these elements in a package that guarantees extreme reliability—or face public outcry.
These online tutorials and simulations can help you understand how Java plays a key role in high-performance applications like self-driving cars.

medical chatbot5. Helping doctors make virtual house calls with chatbots

Once upon a time, doctors made actual house calls, visiting patients in their homes. This may not always have been efficient for the doctors, but it sure was convenient for the patients. Now, there is a booming medical approach designed to let the doctor stay in the office but still visit patients in their homes. One such project is Doctor Online, which relies on Java in its application modules. Though not new, the system includes a full suite of modules designed to make doctor and patient interactions convenient and fast.
Beyond telemedicine, more and more sites, including e-commerce sites, rely on chatbots to provide a personalized touch for everything from choosing the right outfit to tracking lost packages.
Eventually, we could see robotic medical devices that reside in the homes of those who need them. Remote doctors, via the robot, could perform simple tasks like checking a patient’s temperature, listening to their heartbeat, or checking their blood pressure—all without leaving their office. In fact, someday doctor may even be able to perform more advanced tasks, such as administering basic care or performing an EKG.
Java developers will be on the front lines in creating this technology. As the medical profession looks for less expensive ways to address patient needs, look for an ever-expanding role for software engineers in creating the required software.

6. Performing big data analysis

Today, big data analysis is at the center of some of the most interesting uses of technology. Scientists in a number of key industries are using advanced data analysis techniques to discover new patterns in large quantities of data and to better understand complex processes.
Although many engineers believe Python or R is better suited to these kinds of applications, Java is also used for many data analytics tasks, especially in ETL (Extract/Transform/Load) processes. Java is often used to work with Hadoop implementations. Fortunately, a wide variety of tools are available to perform data analysis using Java, including libraries and frameworks like Weka, Rapid Miner, Massive Online Analysis (MOA), Apache SAMOA, JSAT , Java Machine Learning Library — Java-ML, Retina Library, Java Data Mining Package — JDMP, and many others.
It doesn’t hurt that highly compensated big data jobs are popping up in a wide variety of companies and data analysis applications. For example, these skills could be invaluable to help social networks such as Facebook, Twitter, and LinkedIn deal with their issues managing everything from hate speech to terrorist recruiting. Java-based data analysis might one day help stop a terrorist attack or uncover large-scale voter manipulation.

7. Getting your name on the big screen

Special effects firms like Industrial Light and Magic (ILM) rely on Java for all sorts of software-based wonders. In fact, you can often find jobs at ILM for just about any development skill. Currently, ILM uses a combination of Java and Python to handle tasks like sequencing animation scenes.

8. Making games

A lot of popular video games today—such as RuneScape, for example—run on Java. Basically, Java games are just about everywhere because Java works just about everywhere.
The Open JavaFX (OpenJFX) graphics package eases the burden of working with the kinds of images that makes gamers go crazy. In fact, there are gaming development sites, such as Java-Gaming.org, that are totally dedicated to the needs and interests of Java game developers. You can also find specialized libraries for gaming development, such as Lightweight Java Game Library (LWJGL), designed to make creating games in Java much easier.
Android makes extensive use of Java for apps of all sorts, including games. Check out the Mybridge list of 38 top apps written in Java—you may be amazed by the wealth and variety of apps that depend on Java-development skills.

9. Becoming a mad scientist

There has always been an association in popular culture between number crunching and mad scientists. (After all, how many people do you know who label numbers as evil?) Many modern developers don’t think of Java as the best language for numeric processing and scientific needs, and reviewers tend to cite its lack of math libraries as a serious problem. That may be why Python is more widely associated with these kinds of programming tasks.
However, Java can in fact be a better solution for math-oriented applications when you need to combine heavy numeric or scientific processing with smooth 2D or 3D graphics output. If you’re a mad scientist in training and want to use Java, you need a library such as JScience or JSci. Sites such as Glassdoor provide listings of interesting jobs working with science and Java.

school concept10. Going back to school

A large number of schools and educational institutions (both K-through-12 and higher education) rely on custom Java applications. Until recently, Java was the language of choice for learning programming skills in schools (it has recently been overshadowed by Python) and it is still widely used in educational settings.
Creating educational and other applications for schools tends to involve writing a wide variety of smaller applications, compared to fewer but bigger projects in enterprise environments. In the educational world, you could be coding an application to track student statistics one day and working on a modeling process for a lab another day. Freelancer provides listings of jobs in this category.

Java is everywhere

These 10 lesser known things you can do with Java merely scratch the surface of how to turn Java skills into a rewarding career, a lucrative sideline, or even a way to unlock the hidden potential in your current position. Java is so popular and widespread that there’s no shortage of ways to find fun and fascinating work with the language. With a little bit of digging and a dash of creativity, Java expertise can be your ticket to a fascinating career in almost any field.

Saturday, 15 July 2017

8 Useful Tools/Frameworks for Java Testing

8 Useful Tools/Frameworks For Java Testing





1. JUnit

Without a doubt, JUnit is the most popular Java testing framework out there. The framework is open source and is widely used by Java developers for writing & executing unit test cases. JUnit has also been one of the major forces behind the adoption of test-driven development methodologies. JUnit comes as a packaged JAR (Java ARchive) library, and you can download junit.jar and hamcrest-core.jar files from GitHub before placing them in your test class path.
The Java testing framework is very simple to use, and provides annotations for test method identifications. Assertion is another exciting feature of JUnit which it uses to test the expected results. With JUnit, Java developers can quickly run unit tests and get instant results via red/green progress bar.
Although JUnit is a popular unit testing framework, it can also be used for integration and acceptance tests. So, you can easily integrate JUnit with standard IDEs, like eclipse and netbeans.
2. JWalk

JWalk is a Java testing tool that relies on Lazy, Systematic Unit Testing. The tool performs bounded exhaustive testing of any compiled Java class, supplied by the programmer.
Although JUnit enables to frequently retest the modified code, the manually created test scripts often remain incomplete. But that’s not the case with JWalk, which operates directly on the compiled code for Java classes and uses a new lazy method for inducing the changing design of a class on the fly. Besides, fully automated checking gradually takes over manual inspection of the test report.
For systematic testing, JWalk performs exhaustive testing of the whole state-space of the object to ensure compliance with the specification. The tool is smart enough to infer the specification from hints supplied by the programmer during the testing process, and from smart assumptions made about the intended design of the code.

3. Mockito


Mockito, an open source framework under MIT license, is one of the most famous mocking frameworks for Java. The reason why mocking frameworks have become popular is that they improve unit tests by removing the outside dependencies, thereby giving rise to better, faster, independent unit tests. Unlike other mocking frameworks, Mockito makes it possible to verify the behavior of the system under test (SUT) without setting up expectations in advance.
The existence of a robust coupling between the test code and the SUT often makes it difficult to deal with mock objects. However, Mockito minimizes the coupling by removing the expect-run-verify pattern through elimination of the expectations specification. Therefore, Mockito paves the way for simpler test code that is easier to read and modify.

4. TestNG


TestNG is a testing framework inspired from JUnit and NUnit, but it has more powerful and easy-to-use functionalities. TestNG was designed keeping in mind a broad testing spectrum: Unit, functional, end-to-end, integration, etc. Testers prefer TestNG over JUnit for mainly three reasons:
  • Easier understanding of annotations
  • Easier grouping of test cases
  • Enables parallel testing
Besides, various tools and plugins, like Eclipse, IDEA, Maven, etc, support TestNG. The NG means next generation. Other virtues of TestNG are flexible test configuration, support for data-driven testing, JDK functions for runtime and logging (without dependencies), code testing in a multi thread safe, etc.

5. JwebUnit

JwebUnit is a Java framework used for functional, Regression and Integration testing of web applications. The framework provides a simple interface for writing test cases, and is a good choice for screen navigation testing.
JwebUnit uses testing frameworks like HtmlUnit and Selenium to provide a unified, simple testing interface, thereby making it possible for you to quickly test the correctness of your web applications. If you want to use the latest version of JwebUnit, i.e. 3.3, you need to have the knowledge of latest Java

6. TagUnit

Similar to JUnit, TagUnit also has test cases, test suites and tests that are written as assertions. An important distinction to JUnit is that tests are written as JSP pages, not Java classes. JSP tags are either built-in or user-defined tag elements that remove a huge burden from JSP to separate reusable components.
Java classes are used to write the functionality of Tags. If you think that using JUnit is enough to test them directly, you’re wrong. Since they are not standalone classes, a JSP needs to be converted into Servlet to call the tag classes. This is another reason why TagUnit is also called a tag library for testing custom tags within JSP pages.

7. HTMLUnit

HTMLUnit, an open source library and a headless browser, is written in Java and is widely used for Integration testing. JSPs are designed to run inside the web container. However, HTMLUnit is well capable of testing the View part even without the container. Using Jasper, JSPs are first manually converted to Servlet class. And since the container is not running, simulation of the request and response behavior needs to be done. For this, one needs to create Mock objects of JSPWriter, PageContext, HTTPServletRequest and HTTPServletResponse.
It won’t be right to call HtmlUnit a generic unit testing framework. It simply provides a way to simulate a browser for testing purposes.

8. Arquillian


Arquillian is an integration testing framework for Integration and Functional testing of Java. Without any exaggeration, it’s a highly innovative and extendable testing platform for JVM. Arquillian offers testers the-much-needed ease in creating automated integration, functional and acceptance tests for Java.
The tool also rids the need of creating mock objects and removes the hassles of dealing with container lifecycle and deployment. Arquillian also integrates with other testing frameworks, like JUnit 4, TestNG 5, and launches tests using existing existing IDE.
The tech market is flooded with numerous Java testing tools. However, for this blog, I have picked the ones that are mostly used by Java developers and testers. I hope the list above helps you choose a Java testing tool that best fits your needs. Always remember, there is no good or bad tool. Based on functionalities and varied requirements, a Java testing framework that is good for someone may not be so good for you. So, make your decision after assessing your project requirements and acquainting yourself with all that’s on offer by a Java testing tool.


Sunday, 19 February 2017

TechnoSoft Informatics - An ISO 9001:2008 Certified Training & Development Centre




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Dice's list of the top 10 software skills in demand



Dice's list of the top 10 software skills in demand :
In the software development industry, new technologies are emerging in a fast-paced manner. Staying ahead in the tech market is very important for every programmer, moreover as the trends in programming are the same as in the other industries, with changing necessities and new in-demand programming languages for the next years.
1. Java/Java Enterprise Editions developers(J2EE Developers)/Java Cloud Developers
2. Software developers/engineers(in specific technology)
3. Mobile developers(Android / IOS)
4. Project Managers
5. .NET developers
6. Web & Python developers
7. System engineers/administrators
7. Network engineers/administrators
9. SAP professionals
10. Business analysts

The Complete Android Activity Fragment Scenario


Cloud Scene


Level Of Big Data Maturity


The New Industrial Revolution




A Snapshot of SQL


WiFi & LiFi Technology


Thursday, 17 December 2015

Top Coders/Programmers/Developers Programming Weapon: JAVA

Top Coders/Programmers/Developers Programming Weapon: JAVA

When 80,000 coders from 9,000 IT companies were given a chance to fight the TechGig Code Gladiators 2015 battle using a weapon of their choice i.e. a programming language they love, we realized that Java is the love of their life. Contestants preferred Java over 9 other programming languages, which includes: C, C++, C#, PHP, Java Script, Python, Perl, Ruby and VB.net.


TechGig Code Gladiators is a national level competition that showcases the company with the best coders and identifies the Best Coder in the Country.


In the initial online rounds of the Code Gladiators 2015, the top 100 coders battled it out face-to-face in the grand finale to win coveted titles and prize money of Rs 6 lakhs. And at the finale, when India got its five best coders, Java emerged as the most popular coding language among the top coders.


Apurv Gupta from Oracle (the winner), Surender Godara from SapientNitro (first runner-up), Victor Hoh from AWPL (second runner-up), Ankit Vij from Cvent India Pvt Ltd (fourth runner-up) and Hina Bhatia from Steria (TechGig Code Diva and best women coder) - all chose Java as their preferred language to sail through the contest.


"One thing all skilled coders agree on is that they love familiarity. When it's time to write for heavyweight and scalable enterprise applications, techies reach for their most comfortable tool. Thanks to years of unrelenting backward compatibility, Java is that tool." says Vivek Madhukar, COO, TimesJobs.com


Speaking to TechGig after the finale, Surender Godara from SapientNitro said that for the first two virtual rounds, he was coding in C language but the final problems were so tough he had to switch to Java.


Only the third runner-up, Sonu Singal from Algoworks Technologies, was the lone winner to code in C# (C sharp) in the grand finale of Code Gladiators.


Similar to the 2014 edition of TechGig Code Gladiators, majority of the participants of this year's contest too coded in Java, followed by C# and C/C++. Coders this year also turned to trending languages such as Python and Ruby.


The competition also saw the rise of the top five IT companies - Persistent Systems (first), Steria (second), IRIS Software (third), ITC Infotech (fourth) and Amadeus South Asia (fifth).


Reference By:

 Another One:

Hadoop: Big Data Landscape -> Map & Reduce Functionality



So, Solution Is Here:



The best Android libraries that Java & Android Programmer/Developer should know about

The best Android libraries that Java & Android Programmer/Developer should know about



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Dagger
-

Dagger is a really lightweight dependency injection with no extra bells and whistles. It is a simple and fast dependency injector for both Android and Java. It has 2 pieces: the Dagger library (100kb of size) and the Dagger compiler.
The library contains all the necessary logic and some annotations. It also uses standard javax.inject annotations, making your code portable between different dependency injection frameworks like Spring or Guice. Dagger is one of the simplest and most lightweight DI frameworks. It doesn’t contain all the fancy features provided by larger frameworks but it is fast and it does its job. It’s definitely worth considering for when you want to use plain dependency injection with nothing else.

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LeakCanary
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It’s a memory leak detection library for Android and Java. It helps to detect easily leaking objects by just adding couple of lines of Java code to your existing code. It’s free and very easy to use. Similar to Dagger, the development of LeakCanary is also led by Square.
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ZXing
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Using Barcodes and QR codes has become a standard already in the machine-readable data world. ZXing has been around for a while. Originally written in Java, it can read and create barcodes on many platforms and it has been ported to many different languages. The library has been around for a while and has a good user base. The QR-code reader you are using in your smartphone is probably using this library. It works well and has a good history.
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Retrofit
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Retrofit is a library that can turn your REST API into a Java interface. It is a type-safe REST client for both Android and Java. Retrofit enables you to write nice code in pure Java for communication with almost any RESTful API. Like Android libraries tend to be – a lightweight and relatively easy to use.
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Libphonenumber
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It is probably the best and most comprehensive library for parsing, validating and formatting phone numbers. Other than the name, which doesn’t roll off the tongue, it’s great!
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Tape
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Tape is just a collection of classes for queue handling. It’s great for handling data streams and downloading 
data in unstable environments. Rather than code a load of the queue-handling work manually, Tape takes 
care of it for you. If something fails then Tape automatically retries run the command or operation again. 
Also, all intermediate results can be automatically cached, which is a useful feature too.
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Jitpack.io
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The Jitpack.io is developed by the team at Streametry Ltd. Jitpack can build any github project off the hook and publish it to the public Maven repo. How cool is that? It will help save time and hassle when building dependencies. This is one of the easiest ways to publish any Github project as a Maven dependency.

Study these 10 strategies to enhance your interview skills

Study these 10 strategies to enhance your interview skills


Even the smartest and most qualified job seekers need to prepare for job interviews. Why, you ask? Interviewing is a learned skill, and there are no second chances to make a great first impression.
Reflect the three Cs during the interview: cool, calm and confidence. You know you can do the job; make sure the interviewer believes you can, too.

1} Practice Good Nonverbal Communication
It's about demonstrating confidence: standing straight, making eye contact and connecting with a firm handshake. That first nonverbal impression can be a great beginning -- or quick ending -- to your interview.

2 } Dress for the Job or Company
Today's casual dress codes do not give you permission to dress as "they" do when you interview. It is important to know what to wear to an interview and to be well-groomed. Whether you wear a suit or something less formal depends on the company culture and the position you are seeking. If possible, call to find out about the company dress code before the interview.

3} Listen
From the very beginning of the interview, your interviewer is giving you information, either directly or indirectly. If you are not hearing it, you are missing a major opportunity. Good communication skills include listening and letting the person know you heard what was said. Observe your interviewer, and match that style and pace.

4} Don't Talk Too Much
Telling the interviewer more than he needs to know could be a fatal mistake. When you have not prepared ahead of time, you may ramble when answering interview questions, sometimes talking yourself right out of the job. Prepare for the interview by reading through the job posting, matching your skills with the position's requirements and relating only that information.

5} Don't Be Too Familiar
The interview is a professional meeting to talk business. This is not about making a new friend. Your level of familiarity should mimic the interviewer's demeanor. It is important to bring energy and enthusiasm to the interview and to ask questions, but do not overstep your place as a candidate looking for a job.

6} Use Appropriate Language
It's a given that you should use professional language during the interview. Be aware of any inappropriate slang words or references to age, race, religion, politics or sexual orientation -- these topics could send you out the door very quickly.

7} Don't Be Cocky
Attitude plays a key role in your interview success. There is a fine balance between confidence, professionalism and modesty. Even if you're putting on a performance to demonstrate your ability, overconfidence is as bad, if not worse, as being too reserved.

8} Take Care to Answer the Questions
When interviewers ask for an example of a time when you did something, they are asking behavioral interview questions, which are designed to elicit a sample of your past behavior. If you fail to relate a specific example, you not only don't answer the question, but you also miss an opportunity to prove your ability and talk about your skills.

9} Ask Questions
When asked if they have any questions, most candidates answer, "No." Wrong answer. Part of knowing how to interview is being ready to ask questions that demonstrate an interest in what goes on in the company. Asking questions also gives you the opportunity to find out if this is the right place for you. The best questions come from listening to what you're asked during the interview and asking for additional information.

10} Don't Appear Desperate
When you interview with the "please, please hire me" approach, you appear desperate and less confident. Reflect the three Cs during the interview: cool, calm and confidence. You know you can do the job; make sure the interviewer believes you can, too.

Top 10 Interview Tips


Dice's list of the top 10 software skills in demand


Dice's list of the top 10 software skills in demand :

1. Java/Java Enterprise Editions developers(J2EE Developers)
2. Software developers/engineers(in specific technology)
3. Mobile developers(Android / IOS)
4. Project Managers
5. .NET developers
6. Web developers
7. System engineers/administrators
8. Network engineers/administrators
9. SAP professionals
10. Business analysts