Java and PL SQL

Hi guys, I'm trying to figure out how can I catch an error validating data in MySQL

So basically my MySQL trigger says:

Code:

---

Begin
If new.string="" then          // string carries the content of a JtextField
// return an error string
Else
// insert into MySQL the data
End

---

So I want to know if the string in my insert sentence is empty, how can I return a message with a simple System.out.print that indicates to the user that in order to proceed he needs to fill the field in his form.

Knowing this basic example I'll be able to create complex ones, thanks in advance!

Not a Java question. Moving to Forum Lobby.

db

My bad I'm sorry, won't happen again :)

From stackoverflow.
You want the RuiDC one, using signal...presuming you are on 5.5+.
That should throw a sql error up to the calling SQL and on to Java.