17 lines
630 B
Plaintext
17 lines
630 B
Plaintext
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
|
|
<%@ page import="java.sql.*" %>
|
|
<%
|
|
String n=request.getParameter("val");
|
|
if(n.length()>0){
|
|
try{
|
|
Class.forName("oracle.jdbc.driver.OracleDriver");
|
|
Connection con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe","system","oracle");
|
|
PreparedStatement ps=con.prepareStatement("select username from quizregister where username='"+n+"'");
|
|
ResultSet rs=ps.executeQuery();
|
|
while(rs.next()){
|
|
out.print("<font style='color:red'>Username already exist</font>");
|
|
}
|
|
con.close();
|
|
}catch(Exception e){e.printStackTrace();}
|
|
}//end of if
|
|
%> |