```
<html>
<%@ page import="java.sql.*" %>
<head>
<title>Sarvotam List</title>
<link rel="stylesheet" href="Styles/main.css">
</head>
<body>
<div class="seg">
    <form action="main.jsp" method="post">
    <table class="data" align="center" width=80%>
        <tr>
            <th width=20%>Qualification Exam</th>       
            <th width=20%>Course Type</th>
            <th width=20%>Duration</th>
            <th width=20%>Number of Cheques</th>
            <th width=20%>Course_Category</th>
        </tr>
        <tr>
            <td width=20% align="center"><input type="text" name="qual" 
  width=20%></td>
            <td width=20% align="center"><input type="text" name="ctype" 
  width=20%></td>
            <td width=20% align="center"><input type="number" name="dur" 
  width=20%></td>
            <td width=20% align="center"><input type="number" name="che" 
width=20%></td>
            <td width=20% align="center"><select name="opt">
                    <option id="ENG">ENG</option>
                    <option id="MED">MED</option>
                    <option id="OTH">OTH</option>
                    <option id="PG">PG</option>
                </select>
        </tr>
        <tr>
            <td width=20% align="center"><input type="text" name="qual" 
 width=20%></td>
            <td width=20% align="center"><input type="text" name="ctype" 
width=20%></td>
            <td width=20% align="center"><input type="number" name="dur" 
     width=20%></td>
            <td width=20% align="center"><input type="number" name="che" 
width=20%></td>
            <td width=20% align="center"><select name="opt">
                    <option id="ENG">ENG</option>
                    <option id="MED">MED</option>
                    <option id="OTH">OTH</option>
                    <option id="PG">PG</option>
                </select>
        </tr>
        <tr>
            <td width=20% align="center"><input type="text" name="qual" 
width=20%></td>
            <td width=20% align="center"><input type="text" name="ctype" 
width=20%></td>
            <td width=20% align="center"><input type="number" name="dur" 
width=20%></td>
            <td width=20% align="center"><input type="number" name="che" 
width=20%></td>
            <td width=20% align="center"><select name="opt">
                    <option id="ENG">ENG</option>
                    <option id="MED">MED</option>
                    <option id="OTH">OTH</option>
                    <option id="PG">PG</option>
                </select>
        </tr>
        <tr>
            <td width=20% align="center"><input type="text" name="qual" 
width=20%></td>
            <td width=20% align="center"><input type="text" name="ctype" 
width=20%></td>
            <td width=20% align="center"><input type="number" name="dur" 
width=20%></td>
            <td width=20% align="center"><input type="number" name="che" 
width=20%></td>
            <td width=20% align="center"><select name="opt">
                    <option id="ENG">ENG</option>
                    <option id="MED">MED</option>
                    <option id="OTH">OTH</option>
                    <option id="PG">PG</option>
                </select>
        </tr>
        <tr>
            <td width=20% align="center"><input type="text" name="qual" 
  width=20%></td>
            <td width=20% align="center"><input type="text" name="ctype" 
 width=20%></td>
            <td width=20% align="center"><input type="number" name="dur" 
    width=20%></td>
            <td width=20% align="center"><input type="number" name="che" 
width=20%></td>
            <td width=20% align="center"><select name="opt">
                    <option id="ENG">ENG</option>
                    <option id="MED">MED</option>
                    <option id="OTH">OTH</option>
                    <option id="PG">PG</option>
                </select>
        </tr>
            </table>
        <center><button id="submit" name="save">Submit</button></center>

<%              try{
    ResultSet rs=null;
    Statement st=null;
    Connection conn = null;
    Class.forName("oracle.jdbc.driver.OracleDriver");
            conn = 
   DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:XE", 
   "system", "parents94");
            st=conn.createStatement();
            int i=0;
            String s = request.getParameter("save");
            String[] qual=request.getParameterValues("qual");
            String[] ctype=request.getParameterValues("ctype");
            String[] dur=request.getParameterValues("dur");
            String[] noc=request.getParameterValues("che");
            String[] cou=request.getParamterValues("opt");
            if(s!=null)
            while(qual[i].length()!=0){
                st.executeUpdate("insert into SCHOL_COURSE_MASTER values('"+qual[i]+"','"+ctype[i]+"','"+dur[i]+"','"+noc[i]+"','"+cou[i]+"')");
                i++;
            }
        conn.close();
        st.close(); 
            }
catch(Exception e)
    {
        e.getMessage();
    }
%>
</form> 
</div>
  </body>
 </html>

```

This is my code
I need to take inputs from user in the table and add to the database
All the connections work
But the sql query does not lead to any changes in the data base
I just need help in how to code it to work on press of submit button