• Skip to main content
  • Skip to primary sidebar
  • Skip to secondary sidebar
  • Skip to footer

Computer Notes

Library
    • Computer Fundamental
    • Computer Memory
    • DBMS Tutorial
    • Operating System
    • Computer Networking
    • C Programming
    • C++ Programming
    • Java Programming
    • C# Programming
    • SQL Tutorial
    • Management Tutorial
    • Computer Graphics
    • Compiler Design
    • Style Sheet
    • JavaScript Tutorial
    • Html Tutorial
    • Wordpress Tutorial
    • Python Tutorial
    • PHP Tutorial
    • JSP Tutorial
    • AngularJS Tutorial
    • Data Structures
    • E Commerce Tutorial
    • Visual Basic
    • Structs2 Tutorial
    • Digital Electronics
    • Internet Terms
    • Servlet Tutorial
    • Software Engineering
    • Interviews Questions
    • Basic Terms
    • Troubleshooting
Menu

Header Right

Home » Servlet » Database » MySql ROUND Function in Java Servlet
Next →
← Prev

MySql ROUND Function in Java Servlet

By Dinesh Thakur

This Function Will Returns numeric expression rounded to an integer. Can be use to round an expression to a number of decimal points.

First i make a table in database named ‘dbase’ within the reference of mySql(php myAdmin). Then i import all the required java package from java library. I make a class named ‘MySqlROUNDFunction’ extends the ‘HttpServlet’. I use here serviceMethod() which is use to getting request from the doGet()Method for output. Before activating all the required variable i loaded all the required drivers for the database accessing then after i declare variables like first i declare ‘connection'(this variable will act as to create a link between database and the actual code. Here i declare second one is ‘resultSet’ this will take the responsible for fetching the value from columns and the selected rows. Here i declare one more ‘preparedStatement’ this will use to executing the selected query like executeQuery() as (Select ROUND(8.98)).I use doGet()Method which will bring the output on the web browser.

To getting output in tabular form on web browser, i used ‘HTML’ code and the tags for showing output in manner form also.  

 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 MySqlROUNDFunction 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 ROUND(8.98)");
                   rs = ps.executeQuery();
               String title = "Using ROUND 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>Value</th>\n"+ "</body> </html>");
                   while(rs.next())
                      {
                           String val = rs.getString(1);
                       disp.println("<tr><td align=\"center\">" + val +"</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>MySqlROUNDFunction</servlet-name>
   <servlet-class>MySqlROUNDFunction</servlet-class>
</servlet>
<!-- servlet mapping -->
<servlet-mapping>
   <servlet-name>MySqlROUNDFunction</servlet-name>
   <url-pattern>/MySqlROUNDFunction</url-pattern>
</servlet-mapping>

You’ll also like:

  1. MySql IN Function in Java Servlet
  2. MySql LN Function in Java Servlet
  3. MySql PI Function in Java Servlet
  4. MySql RIGHT Function in Java Servlet
  5. MySql Second Function in Java Servlet
Next →
← Prev
Like/Subscribe us for latest updates     

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.


For any type of query or something that you think is missing, please feel free to Contact us.


Primary Sidebar

SQL Tutorials

SQL Tutorials

  • SQL - Home
  • SQL - Select
  • SQL - Create
  • SQL - View
  • SQL - Sub Queries
  • SQL - Update
  • SQL - Delete
  • SQL - Order By
  • SQL - Select Distinct
  • SQL - Group By
  • SQL - Where Clause
  • SQL - Select Into
  • SQL - Insert Into
  • SQL - Sequence
  • SQL - Constraints
  • SQL - Alter
  • SQL - Date
  • SQL - Foreign Key
  • SQL - Like Operator
  • SQL - CHECK Constraint
  • SQL - Exists Operator
  • SQL - Drop Table
  • SQL - Alias Syntax
  • SQL - Primary Key
  • SQL - Not Null
  • SQL - Union Operator
  • SQL - Unique Constraint
  • SQL - Between Operator
  • SQL - Having Clause
  • SQL - Isnull() Function
  • SQL - IN Operator
  • SQL - Default Constraint
  • SQL - Minus Operator
  • SQL - Intersect Operator
  • SQL - Triggers
  • SQL - Cursors

Advanced SQL

  • SQL - Joins
  • SQL - Index
  • SQL - Self Join
  • SQL - Outer Join
  • SQL - Join Types
  • SQL - Cross Join
  • SQL - Left Outer Join
  • SQL - Right Join
  • SQL - Drop Index
  • SQL - Inner Join
  • SQL - Datediff() Function
  • SQL - NVL Function
  • SQL - Decode Function
  • SQL - Datepart() Function
  • SQL - Count Function
  • SQL - Getdate() Function
  • SQL - Cast() Function
  • SQL - Round() Function

Other Links

  • SQL - PDF Version

Footer

Basic Course

  • Computer Fundamental
  • Computer Networking
  • Operating System
  • Database System
  • Computer Graphics
  • Management System
  • Software Engineering
  • Digital Electronics
  • Electronic Commerce
  • Compiler Design
  • Troubleshooting

Programming

  • Java Programming
  • Structured Query (SQL)
  • C Programming
  • C++ Programming
  • Visual Basic
  • Data Structures
  • Struts 2
  • Java Servlet
  • C# Programming
  • Basic Terms
  • Interviews

World Wide Web

  • Internet
  • Java Script
  • HTML Language
  • Cascading Style Sheet
  • Java Server Pages
  • Wordpress
  • PHP
  • Python Tutorial
  • AngularJS
  • Troubleshooting

 About Us |  Contact Us |  FAQ

Dinesh Thakur is a Technology Columinist and founder of Computer Notes.

Copyright © 2025. All Rights Reserved.

APPLY FOR ONLINE JOB IN BIGGEST CRYPTO COMPANIES
APPLY NOW