how to insert multiple check box values into the database using single parameter

[Hemanth Marathe]

this is my code.....
public ArrayList<InstitutesVO> getFilledforms(String institutionId, HttpServletRequest request) {
// TODO Auto-generated method stub
InstitutesVO vo = new InstitutesVO ();
ArrayList<InstitutesVO> list = new ArrayList<InstitutesVO>();
String priority = request.getParameter("priority");
String courseid = request.getParameter("courseid");
String required = request.getParameter("required");
Iterator it = list.iterator();
PreparedStatement st = null;
Connection conn = null;
//while(it.hasNext()){
try{
conn = getConnection();
// while(it.hasNext()){


//String check =(String) it.next();
//String[] required = request.getParameterValues(check);
//for(int i=0;i<required.length;i++){
st = conn.prepareStatement(Resources.getQuery("INSTITUTIONFORM_CRITERIA"));
st.setString(1, institutionId);
st.setString(2, courseid);
if(required!=null)
st.setString(3, required);
else
st.setString(3, "false");

if(priority!=null)
st.setString(4, priority);
else
st.setString(4, null);
st.executeUpdate();
//}



}catch(SQLException e){
e.printStackTrace();
}

return null;
}

//the above code for inserting....
below is my jsp code.....
<div id="myTable">
<div id="div1" style="float:left;width:450px;" >
<logic:iterate id="collegelist" name="City" scope="request"></logic:iterate>
<table width="100%">
<tr>
<td>
Select Course :
</td>
<td>
<html:select name="collegelist" property="courseid">
<option value="-1"> Select course</option>
<option value="1"> MBA </option>
<option value="2"> MCA </option>
<option value="3"> BE </option>
</html:select>
</td>
</tr>
<tr>
<td>
</td>
<td>
REQUIRED
</td>
<td>
PRIORITY
</td>
</tr>
<tr>
<td width="50%">
Gender :
</td>
<td>
<input type="checkbox" name="required" value="true" onclick="disableText();" id = "collegelist"/>
</td>
<td>
<select name="priority">
<option value="1"> 1</option> <option value="2"> 2</option>
<option value="3"> 3</option> <option value="4"> 4</option>
<option value="5"> 5</option> <option value="6"> 6</option>
<option value="7"> 7</option>
</select>
</td>
</tr>
<tr>
<td width="50%">
Date Of Birth :
</td>
<td>
<input type="checkbox" name="required" value="true" onclick="disableText();" id = "collegelist"/>
</td>
<td>
<select name="priority">
<option value="1"> 1</option> <option value="2"> 2</option>
<option value="3"> 3</option> <option value="4"> 4</option>
<option value="5"> 5</option> <option value="6"> 6</option>
<option value="7"> 7</option>
</select>
</td>
</tr>

<tr>
<td width="50%">
Location :
</td>
<td>
<input type="checkbox" name="required" value="true" onclick="disableText();" id= "collegelist"/>
</td>
<td>
<select name="priority">
<option> 1</option> <option> 2</option>
<option> 3</option> <option> 4</option>
<option> 5</option> <option> 6</option>
<option> 7</option>
</select>
</td>
</tr>
<!--
<tr>
<td width="50%">
Nationality :
</td>
<td>
<input type="checkbox" name="required" value="true" onclick="disableText();" />
</td>
<td>
<select name="expired3">
<option value="priority"> 1</option> <option value="priority"> 2</option>
<option value="priority"> 3</option> <option value="priority"> 4</option>
<option value="priority"> 5</option> <option value="priority"> 6</option>
<option value="priority"> 7</option>
</select>
</td>
</tr>

<tr>
<td width="50%">
Education Qualification :
</td>
<td>
<input type="checkbox" name="required" value="true" onclick="disableText();" />
</td>
<td>
<select name="priority">
<option value=""> 1</option> <option value="priority"> 2</option>
<option value="priority"> 3</option> <option value="priority"> 4</option>
<option value="priority"> 5</option> <option value="priority"> 6</option>
<option value="priority"> 7</option>
</select>
</td>
</tr>

<tr>
<td width="50%">
Marks Obtained :
</td>
<td>
<input type="checkbox" name="required" value="true" onclick="disableText();" />
</td>
<td>
<select name="expired5">
<option value="priority"> 1</option> <option value="priority"> 2</option>
<option value="priority"> 3</option> <option value="priority"> 4</option>
<option value="priority"> 5</option> <option value="priority"> 6</option>
<option value="priority"> 7</option>
</select>
</td>
</tr>
<tr>
<td width="50%">
Entrance Score :
</td>
<td>
<input type="checkbox" name="required" value="true" onclick="disableText();" />
</td>
<td>
<select name="expired6">
<option value="priority"> 1</option> <option value="priority"> 2</option>
<option value="priority"> 3</option> <option value="priority"> 4</option>
<option value="priority"> 5</option> <option value="priority"> 6</option>
<option value="priority"> 7</option>
</select>
</td>
</tr>

--><td>
<input type="submit" name="Submit" value="Submit">

</td>


</table>
</div>
</div>
</div>
</form>
<!--</html:form>
--></div>
</div>
</div>

//below the database query..'
INSTITUTIONFORM_CRITERIA = insert into institution_selection_criteria (_Institution_Id,_Course_Id,_Required,_Priority) values(?,?,?,?)

please help me out....