Applications of java in real world

Java applications from the real world

There are a lot of places where Java is used in the real world, from commercial websites to Android e-commerce applications, from scientists to financial applications such as electronic trading systems, games like Minecraft to desktop applications like Eclipse, Netbeans applications and IntelliJ. an open source library for J2ME applications, etc. Let's see each of them with more details.

1) Android Apps

If you want to see where Java is used, it's not far. Open your Android phone and any application, they are written in the Java programming language, with the Google Android API, similar to the JDK. A few years ago, Android provided an essential boost and today, many Java programmers are developers of Android applications. By the way, Android uses different Java virtual machines and different packages, but the code is still written in Java.

2) Server applications in the financial services sector

Java is very big in financial services. Many global investment banks such as Goldman Sachs, Citigroup, Barclays, Standard Charted and other banks use Java to write duplex electronic trading systems, write confirmation and settlement systems, data processing projects and several others. Java is mainly used to write server-side applications, mainly without a front end, that receives data from one server (upstream), processes, and sends another process (downstream). Java Swing has also been popular for creating GUI customers for traders, but now the C # is rapidly gaining market share in this space and Swing is losing its breath.

3) Java Web Applications

Java is also important in e-commerce and in the web application space. You have many RESTfull services created using Spring MVC, Struts 2.0, and similar structures. Even simple Web applications based on Servlet, JSP and Struts are very popular in many government projects. Many government, health, insurance, education, defense and other services have their Web application built in Java.

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4) Software tools

Many useful software and development tools are written and developed in Java and. Eclipse, InetelliJ Idea and Netbans IDE. I think they are also more used desktop applications written in Java. Although there has been time when Swing was very popular for writing heavy clients, mainly in the financial services sector and investment banks. Nowadays, Java FX is gaining popularity, but not a substitute for Swing and C # almost replaced the Swing Finance domain.

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5) Trading application

The third-party trading application, which is also part of the larger financial services industry, also uses Java. A popular trading application like Murex, used in many banks for bank connectivity, is also written in Java.

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6) J2ME applications

Although the advent of iOS and Android J2ME has almost killed the market, but there is still a big weak market in Nokia and Samsung devices using J2ME. There has been time when almost all games, applications available on Android, are written using MIDP and CLDC, which are part of the J2ME platform. J2ME is still popular in products such as Blu-ray, cards, decoders, etc. One of the reasons why WhatsApp is so popular is that it is also available in J2ME for all Nokia devices that are still quite large.

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7) Embedded space

Java is also great in the built-in space. It shows the capacity of the platform, it only needs 130 KB to use Java technology (in a smart card or sensor). Originally, Java was designed for embedded devices. In fact, this is the only domain, which was part of Java's initial campaign "write once, turn anywhere" and it seems to be paying off now.

8) Big Data Technologies

Hadoop and other dating technologies also use Java one way or another, and. HBase and Accumulo (open source) also based on Apache Java and ElasticSearch. Java does not dominate this space because there are technologies like MongoDB that are written in C ++. Java has the potential to get great participation in this growing space if Hadoop or ElasticSearch is large.

9) High frequency trading space

The Java platform has significantly improved its performance characteristics and, with modern JIT, is able to deliver performance at the C ++ level. For this reason, Java is also popular in creating high-performance systems because performance is slightly lower than native language, but you can compromise security, portability, and maintainability to get more speed. and it takes an inexperienced C ++ programmer to create a slow and unreliable application.

10) Scientific applications

Currently, Java is often a standard option for scientific applications, including natural language processing. The main reason is that Java is more secure, portable, durable and has better high-level simultaneity tools than C ++ or any other language.

In the 90s, Java was very popular on the Internet thanks to the applet, but over the years, the applet lost its popularity, mainly due to several security issues related to the Applet sandboxing model. Nowadays, the Java desktop and the applets are almost dead. Java is, by default, an application development language and, given its extensive use in the financial services industry, investment banking, and e-commerce web applications, anyone who learns Java has a bright future. Java 8 has only reinforced the belief that Java will continue to dominate the software development space for years to come.

Java in future world

There is no dissent to the way that Java is the most critical thing across the industry over the globe after C++.It has a renowned adventure since its origin and has been the foundation of numerous new items and administrations that have shocked the world.

So it turns out to be significantly more vital and similarly trinkets to discuss the eventual fate of it. It will permit the Java people group to proceed to improve and convey quality frameworks that address business needs.

Designers have a part to play in this story, by quickening the advancement of IT from separated frameworks to cooperative improvement. It is installed in a large portion of the world's vital IT frameworks and is in a decent position to have an impact in future development.

The best part about Java is, its eco-framework is self-managing, from versatility (Android) to middleware (Hadoop), it impacts everything and will keep on making a major effect in future as well.

Profession Outlook :

A large portion of the main programming firms, are utilizing JAVA as the programming language for creating undertaking applications, online applications and programming applications. Those with involvement in the field for the most part, find lucrative IT occupations.

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Conceivable Roles :

- Software Developer

- EJB Programmer

- Web Programmer

- Application Developer

- Web designer

Those furnished with significant confirmations can without much of a stretch move to top posts in IT, for example,- Project Managers, Senior Programmers and so on.

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Java is additionally a field that guarantees appealing pay and livens. There is a ton of interest for Software Professionals with involvement in Java Java programmers develop business and Web applications for an assortment of stages utilizing the Java programming language.

Java allows for quick preparing in business, programming applications and utilities for the Internet, and PC and cell phones.

Java developers frequently work alone, yet may team up with programming designers and specialists. Software engineers regularly work situated at PCs for the greater part of their work hours.

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In past, we had Cobol, Basic, Fortran, Algol, Pascal language. Presently we hear less of them. Dislike they aren't great any longer. In any case, languages and scripting languages which give better execution, better memory management, lesser lines of code, reusable, less improvement time and space intricacy and with bunches of other engineers well- disposed of elements has arrived.

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 So as a software engineer we ought to be prepared for a change in light of the progressions that emerge in the exploration of processing. Presently languages like Python, Perl, Ruby, Scala, JavaScript are being utilized for customer-side programming. New languages like Dart from Google are coming which guarantee bunches of good elements in web improvement.

Scope of learning java

When we talk of programming languages and technologies, Java is the most popular platform , which is used to develop several applications for the systems as well as embedded devices like laptops, mobiles, tablets and many more. Future Scope of Java Programmers in India is great. It is an object oriented programming language and has a simple object model, as it has been derived from C and C++. It provides a virtual machine, which is accumulated with byte-code and it can run on any system.

Origin of Java

Java was originally developed by James Gosling of Sun Microsystems (which has since been acquired by Oracle Corporation) and released in 1995 as a core component of Sun Microsystems’ Java platform. The language derives most of its syntax from C and C++, but it has fewer low-level facilities than either of them.

Future Scope of Java Programmers in India

Following points show the immense opportunities available for Java Programmers in India:-

• India’s $150 billion IT services outsourcing industry is adapting to the changes that are fast setting in because of automation and higher adoption of digital technologies.
• People’s Popularity of Programming Language index, which ranks languages according to popularity. It is based on tutorial searches, says Python, JavaScript, R, and Swift are gaining attraction in India though Java and PHP still retain the largest share of search.
• There is one clear trend from the multiple surveys on the most widely used programming language worldwide: Java and JavaScript still rule the coding world.
• Government projects like Digital India and Demonetization surely will give rise to demand for Java Programmers in every company going digital.

The opportunities available for a Java Programmer are immense, and their technical knowledge is very valuable. Best of all, to be an expert in Java Programming, you don’t necessarily have to get a college degree. Just take the right training and improve your skills, and you are eligible to become a Java Programmer with bright future.

Future Scope of Java Programmers in India

Following points show the immense opportunities available for Java Programmers in India:-

• India’s $150 billion IT services outsourcing industry is adapting to the changes that are fast setting in because of automation and higher adoption of digital technologies.
• People’s Popularity of Programming Language index, which ranks languages according to popularity. It is based on tutorial searches, says Python, JavaScript, R, and Swift are gaining attraction in India though Java and PHP still retain the largest share of search.
• There is one clear trend from the multiple surveys on the most widely used programming language worldwide: Java and JavaScript still rule the coding world.
• Government projects like Digital India and Demonetization surely will give rise to demand for Java Programmers in every company going digital.

The opportunities available for a Java Programmer are immense, and their technical knowledge is very valuable. Best of all, to be an expert in Java Programming, you don’t necessarily have to get a college degree. Just take the right training and improve your skills, and you are eligible to become a Java Programmer with bright future.

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 Skills required to become Java Programmer: –

• JSP / Servlets.
• Web Frameworks like Struts / Spring.
• Service Oriented Architecture / Web Services – SOAP / REST.
• Web Technologies like HTML, CSS, Javascript and JQuery.
• Markup Languages like XML and JSON.

Job Opportunities for Java Programmers:-

If one talks about job opportunities in field of Java, knowledge of it is required with lot of new technologies such as ‘Java-UI Developers’, ’Android Developers’ and many others. Hence, there are numerous jobs opportunities available in Java, J2EE combining with other new technologies. These technologies are among the highest paid jobs in IT industry, as they come under software development. One should have the competent skills to get an employment with IT companies as many companies are looking for the professionals, who can manage multiple projects in J2EE and augments the industrial efficiency.

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The average pay for a Java Programmer is Rs.391,797 per year. People in this job generally have experience of less than 10 years. Experience strongly influences income for this job segment. A skill in Spring is associated with high pay for this job.

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Java Programmer salary in India is the most lucrative in the field of computer and Internet networking industry. The certification is offered to experienced engineers in this stream. This certification, obtained by very few, can take an individual to the top of the career ladder. Java language has become one of the “hottest” in terms of market trends and job opportunities. As a result, Java Programmer salary in India has also become very lucrative.

Java OOPs Concepts

In this page, we will learn about the basics of OOPs. Object-Oriented Programming is a paradigm that provides many concepts such as inheritance, data binding, polymorphism, etc. Simula is considered the first object-oriented programming language. The programming paradigm where everything is represented as an object is known as a truly object-oriented programming language.

Smalltalk is considered the first truly object-oriented programming language. The popular object-oriented languages are java,c++,c#,php , python, etc.

The main aim of object-oriented programming is to implement real-world entities for example object, classes, abstraction, inheritance, polymorphism, etc.

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OOPs (Object-Oriented Programming System)

Object means a real-world entity such as a pen, chair, table, computer, watch, etc. Object-Oriented Programming is a methodology or paradigm to design a program using classes and objects. It simplifies the software development and maintenance by providing some concepts:

• Object
• Class
• Inheritance
• Polymorphism
• Abstraction
• Encapsulation

Object

Any entity that has state and behavior is known as an object. For example a chair, pen, table, keyboard, bike, etc. It can be physical or logical. An Object can be defined as an instance of a class. An object contains an address and takes up some space in memory. Objects can communicate without knowing the details of each other's data or code. The only necessary thing is the type of message accepted and the type of response returned by the objects.

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Example: A dog is an object because it has states like color, name, breed, etc. as well as behaviors like wagging the tail, barking, eating, etc.

Class

Collection of objects is called class. It is a logical entity. A class can also be defined as a blueprint from which you can create an individual object. Class doesn't consume any space.

Inheritance

When one object acquires all the properties and behaviors of a parent object, it is known as inheritance. It provides code reusability. It is used to achieve runtime polymorphism.

Polymorphism

If one task is performed by different ways, it is known as polymorphism. For example: to convince the customer differently, to draw something, for example, shape, triangle, rectangle, etc. In Java, we use method overloading and method overriding to achieve polymorphism. Another example can be to speak something; for example, a cat speaks meow, dog barks woof, etc.

Abstraction

Hiding internal details and showing functionality is known as abstraction. For example phone call, we don't know the internal processing. In Java, we use abstract class and interface to achieve abstraction.

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Encapsulation

Binding (or wrapping) code and data together into a single unit are known as encapsulation. A java class is the example of encapsulation. Java bean is the fully encapsulated class because all the data members are private here.

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Advantage of OOPs over Procedure-oriented programming language

1) OOPs makes development and maintenance easier whereas in a procedure-oriented programming language it is not easy to manage if code grows as project size increases.

2) OOPs provides data hiding whereas in a procedure-oriented programming language a global data can be accessed from anywhere.

3)OOPs provides the ability to simulate real-world event much more effectively. We can provide the solution of real word problem if we are using the Object-Oriented Programming language.

Advantages of java programming language

Java is a relatively high level language. It offers several ready-to-use resources, which facilitates learning for today's developers and focuses on the actual implementation of the business, instead of worrying about the management of the infrastructure at the system level.

Few of the advantages of the Java programming language are:

Platform independence: Java is independent of the platform, which means that if a program is written and compiled in Java on any platform (underlying hardware and software), it can be run on any other platform of similar capabilities subject to available hardware (power of computing, memory and disk space) and software (installed JRE). This is achieved by the virtue of the software component called Java Virtual Machine, which is an abstract computing machine, when I say abstract, I mean it can have many implementations. Oracle provides one of these implementations.

Automatic Storage Management: This is done using a garbage collector, which avoids the security problems of explicit deallocations. This means that a programmer does not need to call the destructor (as in C / C ++) to explicitly allocate the memory used by the structures or objects. In Java, when an object is no longer referenced, it can be retrieved by the garbage collector. The programmer can not force the garbage collection event, the JVM operates according to the need. Java also provides resources for objects to perform some cleanup work (if necessary), how to release connections and other system resources before they are collected as garbage. Java with the help of JVM also downloads classes if they are no longer needed in the execution.

Avoid unsafe constructions: Java arrays are accessed after explicitly making an index check in the boundaries of the array. An ArrayIndexOutOfBoundexception is thrown in the event that the program tries to access an index that is not within the range of the array. This helps in the execution of the program correctly, otherwise, imagine a scenario in which the language does not check the index of the array and returns a value stored in the location of the memory, but the location of the memory is not within the boundaries of the matrix. This can pose a great doubt about the accuracy of your program.

An explicit declaration order is not necessary: ​​it does not require that the types (Classes or Interfaces) or their members (fields and methods) be declared before their use. It only becomes significant when we declare local variables, local classes and the order of initializers of fields in a class or interface. All other variables are automatically initialized to a predetermined value, the Java programming language does not automatically initialize the local variables.

Type safety: Java is a safe programming language due to its typified nature and strongly typed. Statically typed means that each variable is declared and has a type and the type is known at the time of compilation. Strongly typed means that a variable can only be assigned to a set of values ​​compatible with the variable type. This also helps identify most errors at compile time and clearly distinguishes them from runtime errors.

Multi-threading support: Java encapsulates the thread infrastructure of the underlying system and offers optimal and easy support for multi-threading. There is no explicit need to record a monitor code to acquire locks on objects. Java also facilitates the creation of multiple chaining and the execution of independent tasks with the help of Chaining Sets.

Exceptions Manipulation Support: Java has defined an Exceptions Hierarchy and has an optimal support for Exception Handling. This offers a lot of robustness and helps developers deal with compile-time exceptions without failures and write a defensive program.

java in real world

Java is considered one of the most common and common coding languages ​​currently used. Whether you develop applications for consumers or servers, the scalable programming language seems to appear everywhere.

In previous posts, we talked about the growing need for people with Java coding skills to enter the job market. Companies are being stifled by lack of talent. The fact is that more than 600 jobs were available last year in Wilmington and had to do with Java coding. Companies seem high and low to fill these jobs, but they need their candidates to have the skills they need to succeed.

The more we progress as a society, the more we depend on technology to work, play, and complete tasks. Here are some real-world Java applications where it's making a difference.

Android Apps

The official language for developing applications for Android is Java. The huge Android slots are written on Android and most of its APIs are designed to be primarily called Java. For the first time in the history of mobile warfare, Android outperformed iOS in the revenue generated by its respective app stores, so it does not have to go very far to see the impact that Java had on the mobile community.

Financial services

When it comes to compiling and organizing large amounts of data, Java's capabilities are almost unmatched. This perfectly describes the computing needs of large banks. These large financial institutions rely on the Java code to execute and in e-commerce stock trading systems they are used to write settlement and confirmation systems, data processing projects and more.

Web applications

One of the biggest advantages of Java is its scalability. Large e-commerce sites such as Amazon and Wayfair, among others, rely on Java to easily scale their site as new products are introduced on their endless shelves. Frames like SpringMVC and Struts 2.0 are used to create many RESTfull services increasingly popular among government projects.