What does java technology include?

Java technology includes: 1. Java programming language; 2. Java virtual machine; 3. Java class library; 4. Java platform; 5. Java framework; 6. Java tools; 7. Java security; 8 , Java multi-thread programming; 9. Java network programming; 10. Java application server. Detailed introduction: 1. Java programming language. Java is an object-oriented programming language with the advantages of simplicity, security, cross-platform, etc.; 2. Java virtual machine, which is one of the cores of Java technology and so on.

The operating system for this tutorial: Windows 10 system, DELL G3 computer.

Java technology includes the following:

1. Java programming language: Java is an object-oriented programming language that is simple, safe, and cross-platform. Etc. It supports the concepts of classes and objects, and provides a rich data type and API library, allowing developers to process various data and implement various functions more flexibly.

2. Java Virtual Machine (JVM): JVM is one of the cores of Java technology. It is responsible for reading and processing compiled platform-independent bytecode class files, making Java The program can run on any device that supports JVM. JVM also provides features such as garbage collection mechanism and code security detection, making Java programs more reliable and secure.

3. Java class library: Java class library is a rich set of standard libraries and third-party libraries provided by Java, including collections, input/output streams, database access, network programming, etc. aspect functions. These libraries can help developers implement various functions and operations more conveniently and improve development efficiency.

4. Java platform: The Java platform includes different versions such as Java SE (Standard Edition), Java EE (Enterprise Edition) and Java ME (Micro Edition), which are suitable for different applications. Scenes. Among them, Java SE is the basic version, providing core Java technologies, such as JVM, garbage collection mechanism, code security detection, etc.; Java EE is suitable for enterprise-level application development, providing a rich API library and framework; Java ME is suitable for mobile devices Developed and streamlined the functions and APIs of the Java platform.

5. Java framework: The Java framework is a software architecture used to simplify Web application development. Common Java Web frameworks include Spring, Struts, Hibernate, etc. These frameworks provide a wealth of functions and tools, such as Inversion of Control (IoC), Aspect-Oriented Programming (AOP), Persistence Layer Framework, etc., which can help developers develop Web applications more efficiently.

6. Java tools: Java tools include various tools for developing, testing, debugging and deploying Java applications. For example, integrated development environments (IDEs) such as Eclipse and IntelliJ IDEA can help developers write code, debug programs and manage projects; unit testing frameworks such as JUnit can help developers conduct unit testing; build tools such as Maven and Gradle can help Developers automate building and deploying applications.

7. Java security: Java provides a complete set of security mechanisms, including access control, identity authentication, data encryption and other functions. These mechanisms protect Java applications from security threats such as malicious attacks and data leaks.

8. Java multi-threaded programming: Java supports multi-threaded programming, which can perform concurrent operations through threads to improve program execution efficiency. Java provides a wealth of thread management tools and APIs, such as the Thread class, Runnable interface, lock mechanism, etc., which can help developers implement multi-threaded applications more conveniently.

9. Java network programming: Java provides a wealth of network programming libraries and tools, supports TCP/IP, UDP/IP protocols, and can help developers develop network applications more conveniently. . Common Java network programming frameworks include Spring's RestTemplate, Netty, etc.

10. Java application server: Java application server is a server platform used to deploy and manage Java applications. Common Java application servers include Tomcat, Jetty, GlassFish, etc. These servers provide scalable architecture, rich functionality, and good performance to help developers develop and deploy Java applications efficiently.

To sum up, Java technology includes Java programming language, JVM, class libraries, platforms, frameworks, tools, security, multi-threaded programming, network programming and application servers. These technologies make Java an efficient, safe, and cross-platform programming language that is widely used in web development, mobile application development, game development, enterprise application development and other fields.

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