Jsp database access using odbc - please help

Question

Hi friends,
I�m trying a very simple database access program in jsp data base access using odbc. Odbc has to be used because thin driver or other drivers may not be available in every system of our college and as you know it's not that easy to make changes to those systems. My problem is so simple. I always get an exception in my program.
My jsp content is as simple as:
<%@ page import="java.lang.*,java.sql.*,java.io.*,registerbean" %>
<jsp:useBean id="db" class="registerbean" scope="session"/>
<%
String str="insert into reg values('" + db.getName() + "','" + db.getUname() + "','" + db.getPass() + "'," + db.getAge() + ",'" + db.getSex() + "','" + db.getAdd() + "','" + db.getUgcourse() + "','" + db.getUgqual() + "'," + db.getPer() + ",'" + db.getIadd() + "')";
try
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con=DriverManager.getConnection("jdbc:odbc:yogaesh","scott","tiger");
Statement stmt=con.createStatement();
stmt.executeUpdate(str);
}catch(Exception e1){out.println(str);};
%>
the table reg has the structure:
Name Null? Type
CNAME VARCHAR2(20)
UNAME VARCHAR2(20)
CPSWD VARCHAR2(20)
CONFPASS VARCHAR2(20)
CAGE NUMBER
CSEX VARCHAR2(5)
CADD VARCHAR2(100)
COURSE NUMBER
CQUAL VARCHAR2(10)
CPER NUMBER
IADD VARCHAR2(100)
The registerbean.java file is as below: (This seems to work fine because I tried printing the values using <%= %> tag and it worked out fine and moreover the query string is intact.)
import java.io.*;
import java.util.*;
import java.lang.*;
public class registerbean
private String name,uname,pass,cpass,age,sex,add,ugcourse,ugqual,per,iadd,otherugqual,ccode;
public void setName(String a)
name=a;
public void setUname(String a)
uname=a;
public void setPass(String a)
pass=a;
public void setCpass(String a)
cpass=a;
public void setAge(String a)
age=a;
public void setSex(String a)
sex=a;
public void setAdd(String a)
add=a;
public void setOtherugqual(String a)
otherugqual=a;
public void setCcode(String a)
ccode=a;
public void setUgcourse(String a)
ugcourse=a;
public void setUgqual(String a)
ugqual=a;
public void setPer(String a)
per=a;
public void setIadd(String a)
iadd=a;
public String getName()
return(name);
public String getUname()
return(uname);
public String getPass()
return(pass);
public String getCpass()
return(cpass);
public String getAge()
return(age);
public String getCcode()
return(ccode);
public String getSex()
return(sex);
public String getAdd()
return(add);
public String getUgcourse()
return(ugcourse);
public String getUgqual()
return(ugqual);
public String getPer()
return(per);
public String getIadd()
return(iadd);
public String getOtherugqual()
return(otherugqual);
I initially thought the problem was with str but then str seems to be perfect and I get a string of the form �insert into reg values('c','c','c',98,'Male','c','B.Tech, Applied Artificial Neural Networks','HSC',9898,'h')� which I verified through a javascript debugger. The session scope used is to get values through the db bean from another jsp file. The problem is in the executeUpdate() line of this code. I even tried changing the updation table, but in vain. What could be done to rectify this? Please help me out and please do remember that I have no option but to use odbc.
Thanks in advance.
R. Yogaesh.

Answer 1

I didn't verify the type of exception and i'm now going to do that, but then when the string is as perfect as needed, what is the need for a prepared statement? What is the basic difference between the two? And basically what is the problem with this piece of code which creates an exception? Please reply as soon as possible.
Thankyou very much.
R. Yogaesh.