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Home » Servlet » Database » MySql CurrTime() in Servlet Example
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MySql CurrTime() in Servlet Example

By Dinesh Thakur

This Function will represent the current Time on the web browser.

first i make a table in database named ‘dbase’ with required fields and values which is under the reference of mySql(php myAdmin). Here i import all mandatory java package from the java library as program needs. Then after i make a class named ‘MySqlCurrTime’ extends ‘HttpServlet’. And here i use serviceMethod() which will get request from the doGet()Method for getting output on the web browser. After i load all the required drivers for accessing database. After then i declare mandatory variables like i declare ‘Connection’ this variable does the job to create a link between database and the actual code. The other one i declare is ‘resultSet’ that will fetch the value from selected column and rows. Now here i declare the ‘preparedStatement’ that will use to execute the selected query like executeQuery() as (“Select CURTIME() AS now”). Here i use the doGet()Method for output on a web browser.

For getting the output in the tabular form i use ‘HTML’ code and tags that will show output in a manner way on web browser. 

 EXAMLPE 
 
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class MySqlCurrTime extends HttpServlet
 {
      public void service(HttpServletRequest rq, HttpServletResponse rp)throws IOException, ServletException
       {
          rp.setContentType("text/html");
          PrintWriter disp = rp.getWriter();
          String driver = "com.mysql.jdbc.Driver";
          String url = "jdbc:mysql://localhost/dbase";
          String uid = "root";
          String psw = "root";
          Connection con=null;
          PreparedStatement ps = null;
          ResultSet rs;
          try
           {
                Class.forName(driver);
                con = DriverManager.getConnection(url,uid,psw);
                ps=con.prepareStatement("Select CURTIME() AS now");
                rs = ps.executeQuery();
                String title = "Using Current Time Function";
                String docType ="<!doctype html public \"-//w3c//dtd html 4.0 " + "transitional//en\">\n";
             disp.println(docType + "<html>\n" + "<head><title>" + title + "</title></head>\n" +
               "<body bgcolor=\"#f4efef\">\n" + "<h1 align=\"center\">" + title + "</h1>\n" + "<ul>\n" +
               "<table width=\"50%\" border=\"1\" align=\"center\">\n" + "<th>Current Time  </th>\n"+ "</body> </html>");
               while(rs.next())
                 {
                    String curr = rs.getString(1);
                 disp.println("<tr><td align=\"center\">" + curr +"</td></tr>" );  
                 }     
           }          
                 catch(Exception e) 
                       {
                        e.printStackTrace();
                     }
                        disp.close();
        }
                           public void doPost(HttpServletRequest rq,HttpServletResponse rp)throws IOException,ServletException
                           {
                            doGet(rq,rp);
                           }
  }
WEB.XML
<servlet>
   <servlet-name>MySqlCurrTime</servlet-name>
   <servlet-class>MySqlCurrTime</servlet-class>
</servlet>
<!-- servlet mapping -->
<servlet-mapping>
   <servlet-name>MySqlCurrTime</servlet-name>
   <url-pattern>/MySqlCurrTime</url-pattern>
</servlet-mapping>

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About Dinesh Thakur
Dinesh ThakurDinesh Thakur holds an B.C.A, MCDBA, MCSD certifications. Dinesh authors the hugely popular Computer Notes blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps.

Dinesh Thakur is a Freelance Writer who helps different clients from all over the globe. Dinesh has written over 500+ blogs, 30+ eBooks, and 10000+ Posts for all types of clients.


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