Eclipse IDE is the most popular Java IDE used in the Industry. It is developed by an open source community and can be downloaded for free from Eclipse.org
To create a Servlet application in Eclipse IDE you will need to follow the following steps:
Step 1: Create a dynamic project on eclipse.
Step 2: Now create an HTML file.
And write the below code.
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<form action="display" method="get">
Enter User name: <input type="text" name="val1">
Enter Password: <input type="text" name="val2">
<input type="submit" value="login">
</form>
</body>
</html>
Step 3: now add the below code in web.xml file.
web.xml file is a deployment descripter. Here we have all the configurations.
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd" id="WebApp_ID" version="4.0">
<servlet>
<servlet-name>abc3</servlet-name>
<servlet-class>com.app.studytonight.demo4</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>abc3</servlet-name>
<url-pattern>/display</url-pattern>
</servlet-mapping>
</web-app>
Step 4: Now next create a servlet. For this create a class. Give the package name and the class name.
Add the below code in the class file.
Demo4.java
package com.app.studytonight;
import javax.servlet.http.*;
import javax.servlet.*;
import java.io.*;
public class demo4 extends HttpServlet{
public void doGet(HttpServletRequest req,HttpServletResponse res)
throws ServletException,IOException
{
res.setContentType("text/html");
PrintWriter pwriter=res.getWriter();
String uname=req.getParameter("val1");
String pw=req.getParameter("val2");
pwriter.println("User Details Page:");
pwriter.println("Hello "+uname);
pwriter.println("Your Password is **"+pw+"**");
pwriter.close();
}
}
Now, Run the code.