What can java do?

Java is an object-oriented programming language and a widely used computer programming language. It has the characteristics of cross-platform, object-oriented, and generic programming. It is widely used in enterprise-level web application development and mobile application development.

JAVA is a very popular language. Today, with the rapid development of information, Java technology is everywhere, including mobile software, mobile Java games, computer software, Big data and so on have its presence. [Recommended study: java course]

What can java do?

1. Android application development

Android mobile phone, just open an App application, they use Java language to search Android from Google API documentation, you will find that it is surprisingly similar to Java's JDK documentation.

Since Android just started a few years ago, many Android applications today are developed by Java programmers. Although Android uses different JVMs and different packaging methods, the code is still written in Java language.

2. Server program development

Java is widely used in the financial services industry. Many multinational investment banks such as: Goldman Sachs (Goldman Sachs Investment), Citigroup (Citigroup) ), Barclays (Barclays), and other banks, all use Java to write front-end and back-end electronic trading systems, settlement and confirmation systems, data processing projects, and other projects.

In most cases, Java is used for server-side development, but most of them do not have any front-end. They usually receive data from a server (upper level), process it and send it to another processing system (next level). level processing).

3. Website development

Java occupies most of the seats in the field of e-commerce and website development. You can use many different frameworks to create web projects, SpringMVC, Struts2.0 and frameworks.

Even simple servlets, jsp and struts-based websites are very popular in government projects. For example, websites for medical aid, insurance, education, defense and other different departments are developed based on Java.

4. Software tool development

Many commonly used software and development tools are written and developed using Java.

Such as Eclipse, IneteliJIdea and Netbans IDE.

5. Trading system development

Third-party trading systems are now a large part of the financial services industry, and they are also written in Java.

For example, the popular trading platform Murex is also written in Java and is connected to many bank front desks to provide services.

6. J2ME system development

With the emergence of IOS and Android in recent years, they have almost occupied the J2ME market, but they are still used by low-end Nokia and Samsung mobile phones. J2ME.

Most mobile games and mobile applications in this era are written using MIDP and CLDC, which are part of J2ME, to adapt to the Android system.

But J2ME is still popular in products such as Blu-ray, magnetic cards, and set-top boxes.

The reason why communication applications are so popular is that Nokia mobile phones still support J2ME.

7. Embedded field

Java has great room for development in the embedded field. On this platform, you only need 130KB to use Java technology (on a smart card or sensor).

Originally, Java was designed to work on embedded book devices.

8. Big data technology

Hadoop and other big data processing technologies all use Java or others, such as Apache's Java-based HBase and Accumulo and ElasticSearchas.

But Java does not occupy much space in this field, but as long as Hadoop and ElasticSearchas can grow and develop, Java still has the potential to occupy a part of this market.

9. Scientific applications

Today, Java is still the best choice for scientific applications, including natural language processing. The main reason is that Java has better security, portability, maintainability, and concurrency than other high-level languages ​​than C or other languages.

Java is the default application development language in the software industry. It is widely used in the financial services industry, investment banking and e-commerce application space. Any outstanding programmer who learns Java has a bright future.

10. Game development

Maybe you don’t know that when Nokia was still very popular, more than 90% of the mobile games you played were developed in Java. .

Of course, very few people are developing anymore, and they have all moved to Android.

There are also games developed in Java on computers. The most classic ones are: "Minecraft" (MC for short) and one of the most popular and influential online games in the world today, "League of Legends" (referred to as "League of Legends"). lol). It has always been quite popular.

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