How to understand the relationship and difference between JavaScript, Java, JSP, and J2EE

Many beginners are always confused about the relationships and differences between JavaScript, Java, JSP, and J2EE. To help you quickly understand the relationships between several users, we have explained the following:

1. Javascript is used to compileProgramThe browser is responsible for interpreting and executing it. It can generate dynamic display effects on the webpage and realize the functions of interacting with users. For example, it can move a string of text with the mouse, move an icon on a webpage to verify that the format of the credit card number entered by the user is correct.

2. Java is a basic language. To learn JSP, J2EE must have the basis of Java. Whether you want to be a poet, a novelist, a prose writer, or even a journalist, you must learn Chinese. Java is equivalent to Chinese, JSP, and J2EE, and is equivalent to novels and prose. After learning Chinese, can you have a good career? Not necessarily, but at least there are more opportunities. The better the language is, the easier it is to become a novelist or a reporter. It is impossible to become a journalist or a prose writer without any language.

3. JSP is used to generate webpage documents with changeable content on the WWW server and process the form data submitted by the user. For example, when the message content is displayed, the message content is always added. Therefore, the content of the webpage file passed to the user's browser needs to be changed, which is implemented by JSP. It is also implemented by JSP to insert user messages into the database.

4. j2EE is used to develop large-scale commercial systems. For example, you need to transfer money, deposits, and funds between different banks, perform deposit and withdrawal record operations, and perform security checks, no one can check the account, but also consider network disconnection and other issues. With J2EE, you do not need to write these underlying detailed programs.CodeAnd focus on the Business Process Design of the application.