Mysql SEC_TO_TIME() Function Example using Java Servlet

In this tutorial you will learn how to use mysql sec_to_time() function in java servlet.

Mysql SEC_TO_TIME() Function Example using Java Servlet

In this tutorial you will learn how to use mysql sec_to_time() function in java servlet.

SEC_TO_TIME() function of mysql takes the argument as seconds and converts the seconds into a time value. The converted time value is in hh:mm:ss. In java when you you will give the wrong value of second i.e. second value < 0 && second value >= 86400 as an argument of this function it will throws an exception ' illegal hour values '.

Synatx :

sec_to_time(seconds);

Here the argument second is a second value.

Now, since I have to use this function in java servlet program, therefore I have created a java servlet class named MysqlSecondToTimeServlet which extends the HttpServlet class. In the body of class I overridden the method doGet() and created an objects of HttpServletRequest and HttpServletResponse into its parameter. Inside the doGet() method first I set the mime type that in which format the browser will show the output. In the next line I used the getWriter() method of ServletResponse interface with the object of HttpServletResponse. HttpServletResponse interface extends this method from the ServletResponse. In continue we have to make a connection between java code and database system. So, since I am using Mysql in the example given below therefore, I am loading the driver of mysql and make a connection by using the getConnection() method of DriverManager class. It returns a Connection. Further I am passing the query "SELECT SEC_TO_TIME(86399) AS TIME" (This query will return the output as 23:59:59 ) into the parameter of prepareStatement() method of Connection interface which gives an object of PreparedStatement interface. In the next line I used the executeQuery() method of PreparedStatement interface which returns a ResultSet object that holds the result of query. At last I have extracted the result from the ResultSet object.

Example :

MysqlSecondToTimeServlet.java

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.SQLException;
import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class MysqlSecondToTimeServlet extends HttpServlet
{
  public void doGet(HttpServletRequest request, HttpServletResponse response)
    throws IOException, ServletException
    {
	 response.setContentType("text/html");
	 PrintWriter pw = response.getWriter();
	 String className = "com.mysql.jdbc.Driver";
	 String url = "jdbc:mysql://192.168.10.13/data";
	 String user = "root";
	 String password = "root";
	 String sql = "SELECT SEC_TO_TIME(86399) AS TIME";
	 
	 Connection con;
	 PreparedStatement ps;
	 ResultSet rs;
	 
	 try
	 {
      Class.forName(className);
      con = DriverManager.getConnection(url, user, password);
      ps = con.prepareStatement(sql);
      rs = ps.executeQuery();
      
      pw.println("<table>");
      pw.println("<tr>");
      pw.println("<td><b>TIME</b></td>");
      pw.println("</tr>");
      
      while(rs.next())
      {
       String time = rs.getString(1);
       pw.println("<tr>");
       pw.println("<td>"+time+"</td>");
       pw.println("</tr>");
      }
      pw.println("</table>");
	 }
	 catch(SQLException sx)
	 {
	  pw.println(sx);
	 }
	 catch(ClassNotFoundException cx)
	 {
	   pw.println(cx);
	 }
    }
}

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>mysqlDate</display-name>

<servlet>
<servlet-name>MysqlSecondToTimeServlet</servlet-name>
<servlet-class>MysqlSecondToTimeServlet</servlet-class>
</servlet>

<servlet-mapping>
<servlet-name>MysqlSecondToTimeServlet</servlet-name>
<url-pattern>/MysqlSecondToTimeServlet</url-pattern>
</servlet-mapping>

</web-app>

Output :

When you will execute the above example you will get the output as :

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