• 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 » in operator in mysql Java Servlet example
Next →
← Prev

in operator in mysql Java Servlet example

By Dinesh Thakur

To check a value within a set IN operator is used.

We need to make a table named ‘inq’ into a databse named ‘dbase’. the required fields must be filled with values. After that some kind of packages to be called from java library to catch up java admiration. Here we need to define a class named ‘JavaServletINQuery’ extends the ‘HttpServlet’. this program is been responsible for desired output as required statement from user. here we use the service method()(this method is responsible for calling the doGet() method to getting the request). the variable which are mandatory to use link or present BackEnd and FrontEnd will have to be declared like Connection,ResultSet,preparedStatement all these variables does their required functions or job. like the connection variable will use to make Connection between databse and java code. the drivers are also to be load then created an object of Connection interface. after that preparedStatement will use to represent the Query for output like ‘SELECT emp_id, last_name, salary, manager_id FROM inq WHERE manager_id IN (403, 417, 425)’.the resultset will be define as executeQuery() to execute the query for desired result. and in the last we used doGet() method for fetching result on a web browser.

To see the result in tabular form we use ‘HTML’ tags for an attract looking Output on a web browser.

Example : 
JavaServletINQuery.java
 
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 JavaServletINQuery 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 emp_id, last_name, salary, manager_id FROM inq WHERE manager_id IN (403, 417, 425)");
              rs = ps.executeQuery();
                        String title = "Employee's Info With The Refrence Of Manager Id ";
              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>Employee Id</th><th>Last Name</th><th>Salary</th><th>Manager Id</th>\n"+ "</body> </html>");
               while(rs.next())
                {
                     int e_id = rs.getInt("emp_id");
                               String l_name = rs.getString("last_name");
                               int sal = rs.getInt("salary");
                                         int m_id= rs.getInt("manager_id");
                     disp.println("<tr><td align=\"center\">"+ e_id +"<td align=\"center\">" + l_name +  "<td align=\"center\">" + sal + 
                      "<td align=\"center\">" + m_id + "</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>JavaServletINQuery</servlet-name>
   <servlet-class>JavaServletINQuery</servlet-class>
</servlet>
<!-- servlet mapping -->
<servlet-mapping>
   <servlet-name>JavaServletINQuery</servlet-name>
   <url-pattern>/JavaServletINQuery </url-pattern>
</servlet-mapping>

You’ll also like:

  1. MySql Comparison Operator Java Servlet
  2. MySql IS OPERATOR Function in Java Servlet
  3. MySql Operator Precedence in Java Servlet
  4. MySql Arithmetic Operator in Servlet
  5. MySql DayOfMonth() 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