QuestionAsk Questions?
View Answers
October 24, 2008 at 10:21 AM
Hi,
<%@ page language="java" import = "java.util.*;"%>
<%
List userList;
int nouser;
int i=1;
List cityList;
int nocity;
int j=1;
%>
<%
userList=(ArrayList)request.getAttribute("useridList");
nouser = userList.size();
%>
<%
cityList=(ArrayList)request.getAttribute("cityList");
nocity=cityList.size();
%>
<html>
<head>
<title>dynamic bombobox in servlet</title>
</head>
<body>
<br><br>
<center>
<table border="1" width="300px" bgcolor="bluelight" cellspacing="0" cellpadding="0">
<tr>
<td width="100%">
<form method="GET" action="/examples/jsp/ComboboxList">
<font color="red"><h3 align="center">Dynamic Combobox List</font></h3>
<table border="1" width="300px" cellspacing="0" cellpadding="0">
<tr>
<td width="50%"><b>User Name:</b></td>
<td width="50%"><select name="userid" value="">
<option value="0">---Select Name---</option>
<%
Iterator userit= userList.iterator();
while(userit.hasNext()){
while(i<=nouser){%>
<option value="<%=i%>"><%=userit.next()%></option>
<%
i++;
}
}
%>
</select>
</td>
</tr>
<tr>
<td width="50%"><b>City:</b></td>
<td width="50%">
<select name="city" value="">
<option value="0">----Select city----</option>
<%
Iterator cityit= cityList.iterator();
while(cityit.hasNext()){
while(j<=nocity){%>
<option value="<%=j%>"><%=cityit.next()%></option>
<%
j++;
}
}
%>
</select>
</td>
</tr>
</table>
</form>
</td>
</tr>
</table>
</center>
</body>
</html>
<%@ page language="java" import = "java.util.*;"%>
<%
List userList;
int nouser;
int i=1;
List cityList;
int nocity;
int j=1;
%>
<%
userList=(ArrayList)request.getAttribute("useridList");
nouser = userList.size();
%>
<%
cityList=(ArrayList)request.getAttribute("cityList");
nocity=cityList.size();
%>
<html>
<head>
<title>dynamic bombobox in servlet</title>
</head>
<body>
<br><br>
<center>
<table border="1" width="300px" bgcolor="bluelight" cellspacing="0" cellpadding="0">
<tr>
<td width="100%">
<form method="GET" action="/examples/jsp/ComboboxList">
<font color="red"><h3 align="center">Dynamic Combobox List</font></h3>
<table border="1" width="300px" cellspacing="0" cellpadding="0">
<tr>
<td width="50%"><b>User Name:</b></td>
<td width="50%"><select name="userid" value="">
<option value="0">---Select Name---</option>
<%
Iterator userit= userList.iterator();
while(userit.hasNext()){
while(i<=nouser){%>
<option value="<%=i%>"><%=userit.next()%></option>
<%
i++;
}
}
%>
</select>
</td>
</tr>
<tr>
<td width="50%"><b>City:</b></td>
<td width="50%">
<select name="city" value="">
<option value="0">----Select city----</option>
<%
Iterator cityit= cityList.iterator();
while(cityit.hasNext()){
while(j<=nocity){%>
<option value="<%=j%>"><%=cityit.next()%></option>
<%
j++;
}
}
%>
</select>
</td>
</tr>
</table>
</form>
</td>
</tr>
</table>
</center>
</body>
</html>
October 24, 2008 at 10:22 AM
servlets code
package javacode;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;
import java.util.*;
import java.util.ArrayList;
public class ComboboxList extends HttpServlet{
public void doGet(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException{
response.setContentType("text/html");
PrintWriter pw = response.getWriter();
Connection con = null;
String url = "jdbc:mysql://192.168.10.211:3306/";;;
String db = "amar";
String driver = "com.mysql.jdbc.Driver";
String userName ="amar";
String password="amar123";
try{
Class.forName(driver);
con = DriverManager.getConnection(url+db,userName,password);
Statement st = con.createStatement();
ResultSet rs = st.executeQuery("select * from Combolist");
List ulist = new ArrayList();
List clist = new ArrayList();
while(rs.next()){
request.setAttribute("userid", rs.getString(2));
request.setAttribute("city", rs.getString(3));
pw.println("userid" + " "+"city"+"<br>");
pw.println(rs.getString(2) + " " + rs.getString(3) +"<br>");
ulist.add(rs.getString(2));
clist.add(rs.getString(3));
}
request.setAttribute("useridList", ulist);
request.setAttribute("cityList", clist);
}
catch (Exception e){
pw.println(e);
}
RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("/jsp/Combobox.jsp");
dispatcher.forward(request, response);
}
}
---------------------------------------------
Read for more information.
http://www.roseindia.net/servlets/
Thanks.
package javacode;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;
import java.util.*;
import java.util.ArrayList;
public class ComboboxList extends HttpServlet{
public void doGet(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException{
response.setContentType("text/html");
PrintWriter pw = response.getWriter();
Connection con = null;
String url = "jdbc:mysql://192.168.10.211:3306/";;;
String db = "amar";
String driver = "com.mysql.jdbc.Driver";
String userName ="amar";
String password="amar123";
try{
Class.forName(driver);
con = DriverManager.getConnection(url+db,userName,password);
Statement st = con.createStatement();
ResultSet rs = st.executeQuery("select * from Combolist");
List ulist = new ArrayList();
List clist = new ArrayList();
while(rs.next()){
request.setAttribute("userid", rs.getString(2));
request.setAttribute("city", rs.getString(3));
pw.println("userid" + " "+"city"+"<br>");
pw.println(rs.getString(2) + " " + rs.getString(3) +"<br>");
ulist.add(rs.getString(2));
clist.add(rs.getString(3));
}
request.setAttribute("useridList", ulist);
request.setAttribute("cityList", clist);
}
catch (Exception e){
pw.println(e);
}
RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("/jsp/Combobox.jsp");
dispatcher.forward(request, response);
}
}
---------------------------------------------
Read for more information.
http://www.roseindia.net/servlets/
Thanks.
Related Pages:
If you are facing any programming issue, such as compilation errors or not able to find the code you are looking for.
Ask your questions, our development team will try to give answers to your questions.
Tutorial Topics
