import javax.servlet.*;
import javax.servlet.http.*;
import java.io.IOException;
public class HelloWorldServlet implements Servlet {
private ServletConfig config;
@Override
public void init(ServletConfig config) throws ServletException {
this.config = config;
System.out.println("Servlet initialized");
}
@Override
public void service(ServletRequest request, ServletResponse response) throws ServletException, IOException {
System.out.println("Handling request");
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<html><body>");
out.println("<h1>Hello, World!</h1>");
out.println("</body></html>");
}
@Override
public void destroy() {
System.out.println("Servlet destroyed");
}
@Override
public ServletConfig getServletConfig() {
return config;
}
@Override
public String getServletInfo() {
return "HelloWorldServlet";
}
}
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">
<servlet>
<servlet-name>HelloWorldServlet</servlet-name>
<servlet-class>HelloWorldServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloWorldServlet</servlet-name>
<url-pattern>/hello</url-pattern>
</servlet-mapping>
</web-app>
