What is Servlet and its types?

What is Servlet and its types?

What is Servlet and its types?

There are two main types of Servlet. They are Generic and HTTP servlets. We can use the constructor method to initialize the Servlets with the help of init() and the destructor method to remove the servlet from the resources using destroy().

What is Servlet and JSP?

Java™ servlets and Java server pages (JSPs) are Java programs that run on a Java application server and extend the capabilities of the Web server. Java servlets are Java classes that are designed to respond to HTTP requests in the context of a Web application.

Why do we need Servlets?

The primary purpose of the Servlet specification is to define a robust mechanism for sending content to a client as defined by the Client/Server model. Servlets are most popularly used for generating dynamic content on the Web and have native support for HTTP.

What is Servlet and its advantages?

Servlet technology is used to create a web application (resides at server side and generates a dynamic web page). Servlet technology is robust and scalable because of java language. Before Servlet, CGI (Common Gateway Interface) scripting language was common as a server-side programming language.

What are the two types of servlets?

There are two main servlet types, generic and HTTP:

  • Generic servlets. Extend javax. servlet. GenericServlet. Are protocol independent.
  • HTTP servlets. Extend javax. servlet. HttpServlet. Have built-in HTTP protocol support and are more useful in a Sun Java System Web Server environment.

Is Java Servlets client or server-side?

In addition, Java’s built-in support for networking and enterprise APIs provides access to legacy data, easing the transition from older client/server systems. Java servlets are a key component of server-side Java development.

What are the types of servlets in Java?

Is servlet a framework?

Servlets and JSPs The Servlet and JSP are incredibly simple ways to handle an incoming request, and to develop HTML that gets displayed inside a client’s web browser, respectively. All the existing Java-based web frameworks simply build on top of the Servlet and JSP API.

What are the limitations of servlets?

Disadvantages of Servlet

  • One servlet is loaded into JVM.
  • When there is a request, there is a thread, not a process.
  • Servlet is persistent until it destroys.
  • Designing in a servlet is difficult and slows down the application.
  • You need a JRE(Java Runtime Environment) on the server to run servlets.

What is the difference between servlet and CGI?

All the programs of Servlets are written in JAVA and they get to run on JAVA Virtual Machine….Difference between Java Servlet and CGI.

Basis Servlet CGI
Data Sharing Data sharing is possible. Data sharing is not possible.
Link It links directly to the server. It does not links directly to the server.