What are the main applications of Java? What programs do you usually write that use Java?

Java is an object-oriented programming language, which can write cross-platform applications. Java technology has excellent universality, high efficiency, platform portability and security, and is widely used in PCs, data centers, game consoles, scientific supercomputers, mobile phones and the Internet, and has the largest professional community of developers in the world.

JAVA has a wide range of applications, including the following fields:

Desktop applications: especially desktop applications that need to cross platforms. To put it simply, programs whose main functions run on this machine, such as word and excel, belong to desktop applications.

Enterprise application: In short, it is a large-scale application with a large number of users and a large amount of data, which requires high stability, security, expansibility and assemblability of the system. Enterprise application is the most widely used field of Java at present, and it almost stands out. Including various industry applications, enterprise informatization, e-government, etc. , including OA, HR, CRM, ERP, SCM and EAM.

Embedded devices and consumer electronic devices, including wireless handheld devices, smart cards, communication terminals, medical equipment, information appliances (such as digital set-top boxes, refrigerators), car navigation systems, etc. , are popular Java application fields in recent years, especially Java applications and Java games on mobile phones, which are more popular.