jdbc with servlets


import java.sql.*;
import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class mohit
 */
@WebServlet("/mohit")
public class mohit extends HttpServlet {
	private static final long serialVersionUID = 1L;
	String url="jdbc:mysql://localhost:3306/MOHIT";
    String username1="root";
    String password1="mysql";
    /**
     * @see HttpServlet#HttpServlet()
     */
    public mohit() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		response.getWriter().append("Served at: ").append(request.getContextPath());
		try {
			Class.forName("com.mysql.jdbc.Driver");

			PrintWriter out = response.getWriter();
			 String input=request.getParameter("action");
		     String name=request.getParameter("user");
		     String password=request.getParameter("pass");
		     String age=request.getParameter("age");
		     java.sql.Connection con=DriverManager.getConnection(url,username1,password1);
	         out.println("Connection successful");
	         Statement st=con.createStatement();

	            if(input.equals("insert"))
	            {
	                int i=st.executeUpdate("insert into data values('"+name+"','"+password+"','"+age+"')");
	                if(i>0)
	                {
	                    out.println("inserted successfully");
	                }
	            }
	            else if(input.equals("Select"))
	            {
	            	ResultSet rs = st.executeQuery("select * from register;");
	            	while(rs.next()){
	            		//Retrieve by column name
	            		String username1 = rs.getString("username");
	            		String password1 = rs.getString("password");
	            		//Display values
	            		//System.out.print(", Username: " + username);
	            		//System.out.println(", Password: " + password1);
	            	out.println(username1);
	            	out.println(password1);

	            		}
	            		rs.close();
	            }

		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doGet(request, response);
	}

}

-----------------------------------------------------------------------------
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<form method='post' action='http://localhost:8080/connectdb/mohit'>
User <input type='text' name='user'>
Password<input type='text' name='pass'>
<input type='submit' name='action' value='insert'>
</form>
</body>
</html>