Comparing value of bean property/textbox in a form to a field in the db

Question

How do I compare the value of a bean property or the value of a textbox in a form (e.g. idno) to the value of an idno stored in my database using an SQL statement?
I actually know that my SQL statement should resemble something similar to the one shown below:
"SELECT * from user WHERE idno(value in the db) = idno(value entered in the form)"
My problem is I am placing this SELECT statement on a .java file so I am clueless as to how I will state, using an SQL statement, that I only want to retrieve the record whose idno in the db matches the idno entered by the user in the form (whose value I store in a bean that is also inside the .java file I mentioned earlier).
Should I place my SQL statement in the .java file or should I place it on my jsp instead?
Any advice will greatly be appreciated! Thanks in advance!

Answer 1

Hi
Details:
JSP - Contains a Form for entering ID number.
Java Bean - Stores the ID number entered into the Form of the JSP page and also has the SQL Statement Object
The Problem: Where should you put the SQL Statement Object ?
Possible Solution: I think you are confused about SQL statements execution. This is what you can do. The Retrieved Id number from the Form has to be appended to the preformatted String which has the SQL statement stored in it. Once this is done this statement may be executed to retrieve the data associated with the ID number , if it exists.
Here is a link that should help you build an SQL statement on the fly and execute it. Try out some of the examples.
http://java.sun.com/docs/books/tutorial/jdbc/
Good Luck!
Eshwar Rao
Developer Technical Support
Sun mcirosystems inc
http://www.sun.com/developers/support