What language is Java?

Java is an object-oriented programming language that not only absorbs the advantages of the C language, but also abandons the difficult-to-understand concepts in C. Therefore, the Java language has two characteristics: powerful functions and simple and easy to use. Java implements the object-oriented theory extremely well, allowing programmers to perform complex programming with an elegant way of thinking.

The operating environment of this tutorial: windows7 system, java8 version, DELL G3 computer.

Introduction to Java

Java is an object-oriented programming language that not only absorbs the various advantages of the C language, but also abandons the incomprehensible multiple inheritance and Pointers and other concepts, so the Java language has two characteristics: powerful and simple to use.

As a representative of static object-oriented programming languages, Java language perfectly implements object-oriented theory and allows programmers to perform complex programming with an elegant way of thinking.

Java language features:

• Simplicity

• Object-oriented

• Distribution

• Compilation and Interpretability

• ##Robustness

• Security

• Portability

• High performance

• Multi-threading

• Dynamics

Technical application:

1. Android application

Many Android applications are developed by Java programmer developers. Although Android uses different JVMs and different packaging methods, the code is still written in Java language. A considerable number of mobile phones support JAVA games, which makes many non-programmers familiar with JAVA.

2. Server programs used in the financial industry

Java is widely used in the financial services industry. Many third-party trading systems, banks, and financial institutions choose to use Java for development because it is relatively easy to use. In other words, Java is safer. Large multinational investment 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).

(Learning video recommendation:

java video tutorial)

3. Website

Java occupies a certain seat in the field of e-commerce and website development . Developers can use many different frameworks to create web projects, SpringMVC, Struts2.0 and frameworks. Even simple servlets, jsp and struts based websites are often used in government projects. For example, websites for medical aid, insurance, education, defense and other different departments are developed based on Java.

4. Embedded field

Java has great room for development in the embedded field. On this platform, only 130KB can be used to use Java technology (on smart cards or sensors).

5. Big data technology

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

6. The space of high-frequency trading

The Java platform has improved the characteristics of this platform and even if it is compiled, it can also pass data like C. It is for this reason that Java has become the language of choice for programmers to write trading platforms, because although the performance is not as good as C, developers can avoid issues such as security, portability and maintainability.

7. Scientific applications

Java is a good 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.

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java introductory tutorial)

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