Need help on performing database queries with a general query

Dear experts,

I have two issues

1)

I have developed a software which connects to Oracle database

performing and executing DDL/DML statements.

I am using a Jdbc thin oracle driver.

When i perform a wrong syntax query or say a query using invalid column.I get exception accordingly.However,I want to know if there is any way by which i can know the exact position where i am making error

just as an asterik(*) comes in sql plus in case of invalid column or so.

2)

Whenever i minimize software window (made of swing components)

and again maximize it.It takes almost 12 secs to be visible otherwise it remains white.Is swing that much slow ?

[705 byte] By [Adi1000a] at [2007-11-27 5:56:00]