Features of Java development

One of the most popular programming languages, Java, still raises a lot of questions, especially among beginners.

In this article, we will analyze where this programming language is used as well as its features.
Features of Java development

Java application scope

Most large companies use Java in one way or another.

This universal programming language is used by companies of all sizes in their corporate server software. Java-based applications can be found everywhere: in a "smart" kettle, Android smartphone, computer or Tesla car. And since Java can be found everywhere, it’s pretty easy to find a job knowing this language.

Why you should learn Java

The answer is simple. Java is a universal language used by thousands of companies. So if you know Java, it’s quite easy to find an interesting job. Java is relatively simple to master, so it is suitable for those who are new to learning programming. The language functions on all platforms and although it is constantly being updated and upgraded, the old Java code is compatible with the new one.

Why do we need Java?

Real-world Java applications
There are many Java usage areas: from e-commerce websites to Android applications, from scientific to financial applications, such as trading systems and games, such as Minecraft.
Android applications
All Android applications are written in Java and use Google and the Android API. So if you want to see where Java is used, just pick up an Android phone.
Server applications in financial services
Java is used extensively in finance. Many global banks like Goldman Sachs, Citigroup, Barclays, Standard Chartered, and others use this language to write front-end and back-end electronic systems, regulatory and confirmation systems, data processing projects, and more.

It is Java that is mostly used to write server applications, usually without any user interface, which receive data from a server, process it and then send it on.
Web applications
Java is widely used in e-commerce and web application areas. A great number of RESTful services has been built using Spring MVC, Struts 2.0, and similar frameworks.
Software tools
A lot of useful software and development tools, such as Eclipse, IntelliJ IDEA, and NetBeans IDE are written and developed in Java.
Trading applications
Third-party trading applications, which are also a part of the large financial service industry, also use Java. Popular applications, such as Murex, which are used by many banks, all are written in Java.
J2ME applications
Although the advent of iOS and Android almost destroyed the J2ME market, there are still a huge number of cheap phones from Nokia and Samsung that use J2ME.
Embedded systems
Java is also used extensively in the field of embedded systems. We can see what the platform is capable of with only 130 KB for using Java on smart cards and sensors. Java was originally developed for embedded systems.

The basic logic behind Java consisted in the ability to "write once, run anywhere" and it seems to be paying off.
Big data
Hadoop and other big data technologies use Java in one way or another, for example Apache’s HBase and Accumulo, or Elasticsearch. While Java doesn’t dominate the area, it has the potential to gain a larger share if Hadoop or Elasticsearch expands.
Scientific applications
Because of its simplicity, easy-to-learn, easy-to-implement, and cross-platform nature, Java is the default choice for scientific applications, including natural language processing. The main reason is that Java is safer, more mobile and reliable, and has better parallelization tools than C++ and other languages.

Features of Java development

The main idea was that the program code is not directly executed by the processor, but by a byte code interpreter called java-machine or JVM.

This approach has a number of features and benefits.
Java machines can process universal byte code instructions with respect to the specific features of systems. This is why this language has captured the development for mobile devices. Because of the interpretation within the JVM, the speed of program execution is noticeably reduced. Programs in Java are on average twice as slow as programs in C++.
Memory management
Manual memory management has been replaced by the garbage collection. Because of a different approach to memory in Java, it is not necessary to work with pointers, which simplifies programming.

Java provided syntax that was modern for its time. For example, programs were written entirely in an object-oriented style, with strict static typing.
All of this led to the growing popularity of this programming language. Millions of developers have since been involved in programming in this language.

This language is widely used as a backend in the financial sector and e-commerce, web applications, embedded systems, etc.

Many tools and utilities are written in Java, such as the most popular IDE called IntelliJ IDEA, Jira task tracker, and Postgres database management system.

Java’s main competitors

Along with success also come competitors.

For example, in 2002 Microsoft released a similar product called C#, an ideologically very close language with its own byte code and runtime.

With time, C# also became a cross-platform language. The competition between languages has been increasing. The great age and the burden of backward compatibility hinder the rapid development of the language.

For example, Java has the following disadvantages:
● Weak type system: weak generic types, lack of user-defined value types.
● Slow development of the standard library and of the language as a whole.
● Lack of modern asynchronous programming methods async/await, yield return.
● Absence of many tools, which are long present in other languages: extensions, operator overloading, etc.
On the same JVM platform, other languages and technologies emerge to add expressiveness to the language. This is how Scala, Java+Lombok, and Kotlin appear. Kotlin is replacing it particularly quickly. These two languages can be used together in the same project, which greatly lowers the entry threshold for new programmers. In android development, Kotlin has in fact already replaced Java.

The JVM runtime environment continues to evolve. Garbage collection technology and JIT compilation are improving, making Java still the runtime leader among memory-managed languages.
At Digex Co. we know and use practically all modern technologies, libraries and frameworks in development, both Java and Kotlin. More than half of our developers are experienced senior programmers with in-depth knowledge of the majority of technologies.

We can find a specialist for your task and solve everything you might need using the most appropriate programming language. We have specialists for any request.

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