This has nothing to do with JDBC. Likely you need to read some basic SQL tutorials.
Start off here: http://www.google.com/search?q=sql+tutorial
And MySQL specific: http://www.google.com/search?q=mysql+sql+tutorial
Once you have a real JDBC problem (once more again: JDBC != SQL), you're welcome.
The topicstart doesn't need to be all in bold though. Putting pressure by "pls pls pls" is also completely meaningless. Ask smart questions.