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.