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This article mainly explains "what are the advantages of Servlets engine". The content of the explanation is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn what advantages Servlets engine has.

What is Servlets?

Servlets is a technology that Java focuses on CGI development. Run on the server side and produce dynamic results. Why use Servlets instead of traditional CGI programs?

Efficiency: with traditional CGI programs, every time a HTTP request is received, the system starts a new process to process the request, which leads to system performance degradation. With Servlets,Java VMs running all the time, Java VMs creates a Java thread to process it immediately after receiving a request, which is much more efficient than starting a new system process every time.

Powerful: Servlets allows you to use many powerful features that traditional CGI cannot provide. You can use Java's API to do anything that traditional CGI considers difficult or impossible. Servlets can easily achieve data sharing and information maintenance, tracking session and other functions.

Security: Servlets runs within the limits of the Servlets engine, just as you can run Applets in a Web browser, which helps protect Servlets from threats.

Cost: because Servlets can run on multiple Web servers, you can use a free or cheap server and get it to support Servlets, which can greatly reduce costs.

Flexibility: because Servlets runs on the Java platform, because of the cross-platform nature of Java, Servlets can also be easily transferred from one platform to another operating system platform, thus greatly increasing flexibility.

A Servlets is actually a Java class that needs to run on Java's virtual machine and use the Servlets engine. When a Servlets is requested, the Servlets engine calls the Servlets and runs until the called Servlets finishes running or the Servlets engine is shut down.

The JavaServlets development tool (JSDK) can be downloaded from the Sun website. It includes Servlets APIs and a simple Servlets engine.

Thank you for your reading, the above is the content of "what are the advantages of Servlets engine". After the study of this article, I believe you have a deeper understanding of the advantages of Servlets engine, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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