Difference Between Applet and Servlet in Java

Applet and servlet are the small Java programs or applications. But, both get processed in a different environment. The basic difference between an applet and a servlet is that an applet is executed on the client-side whereas, a servlet is executed on the server-side.

Let have a looks on Applets and Servlet Example.

Creating “Hands on Applet” Applet.

// A "Hands on Applet" Applet 
// Save file as HandsonApplet.java 
  
import java.applet.Applet; 
import java.awt.Graphics; 
  
// HandsonApplet class extends Applet 
public class HandsonApplet extends Applet { 
  
    // Overriding paint() method 
    @Override
    public void paint(Graphics g) 
    { 
        g.drawString("Hands on Applet", 20, 20); 
    } 
}

Creating “Hands on Servlet” Servlet.

// Import required java libraries 
import java.io.*; 
import javax.servlet.*; 
import javax.servlet.http.*; 
  
// Extend HttpServlet class 
public class HandsonServlet extends HttpServlet { 
  
    private String message; 
  
    public void init() throws ServletException 
    { 
        // Do required initialization 
        message = "Hands on Servlets"; 
    } 
  
    public void doGet(HttpServletRequest request, 
                      HttpServletResponse response) 
        throws ServletException, IOException 
    { 
  
        // Set response content type 
        response.setContentType("text/html"); 
  
        // Actual logic goes here. 
        PrintWriter out = response.getWriter(); 
        out.println("<h1>" + message + "</h1>"); 
    } 
  
    public void destroy() 
    { 
        // do nothing. 
    } 
}