| A Java applet is a small application which is written in Java and delivered to users in the form of bytecode. |
A servlet is a Java programming language class used to extend the capabilities of a server. |
| Applets are executed on client side. |
Servlets are executed on server side. |
| Applets are used to provide interactive features to web applications that cannot be provided by HTML alone like capture mouse input etc. |
Servlets are the Java counterpart to other dynamic Web content technologies such as PHP and ASP.NET. |
| Life cycle of Applets init(), stop(), paint(), start(), destroy(). |
Lifecycle of servlets are:- init( ), service( ), and destroy( ). |
| Packages available in Applets are :- import java.applet.*; and import java.awt.*. |
Packages available in servlets are:- import javax.servlet.*; and import java.servlet.http.*; |
| Applets use user interface classes like AWT and Swing. |
No User interface required. |
| Applets are more prone to risk as it is on the client machine. |
Servlets are under the server security. |
| Applets utilize more network bandwidth as it executes on the client machine. |
Servlets are executed on the servers and hence require less bandwidth. |
| Requires java compatible browser for execution. |
It accepts input from browser and generates response in the form of HTML Page, Javascript Object, Applets etc. |
| Applets are two types 1.) Untrusted Applets 2.) trusted Applets |
Servlet are two types 1.) Generic Servlet 2.) HTTP Servlet |
| Applets is a part of JSE(JAVA Standard Edition) Modules. |
Servlet is a part of JEE(Java Enterprise Edition ) Modules. |
