What can the java language do?

Java language can be used for: 1. Android application development; 2. Server program development for financial industry applications; 3. Website development; 4. Software tool development; 5. Trading system development; 6. Embedded field development ; 7. Big data development, etc.

This is preparing to enter the industry. Students who enter Java may have some doubts about the application of Java. What can the Java language do and what are the employment directions? The following article will introduce it to you, I hope it will be helpful to you.

1. Android application development

If you are still looking for where to apply Java, you don’t have to run around looking for it, it is right next to you. When you open an Android phone and open an app at random, they are completely using Java language. If you search for Android API documentation on Google, you will find that it is surprisingly similar to Java's JDK documentation.

Since Android just started, 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 used in the financial industry

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 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). Java Swing technology is designed to develop visual interface clients for traders to use. However, with the rise of C# in recent years, programmers have abandoned cumbersome code when developing clients. C# is slowly replacing Swing. Become the mainstream of visual development.

3. Website development

Similarly, 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 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. They are all written in Java. Although JavaFx has gained popularity, it still cannot replace Swing. Now C# has almost replaced Swing in the financial development field.

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. Development in the 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. In fact, this is just one area. This was just a "write once, play anywhere" project, and now it looks like this.

7. Big data development

Hadoop and other big data processing technologies all use Java or others, such as Apache's Java-based Hbbse and Accumulo and ElasticSearchas. However, Java does not occupy much space in this field. For example, MongoDB is written based on C technology. In general, as long as Hadoop and ElasticSearchas can grow and develop, Java still has the potential to occupy a part of this market.

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