Swing/AWT/SWT :: Add Progressbar To Project For Listening Swing Worker Updates?

I have a problem with progress bar implementation to my project. Let me explain it;

I have Jframe named GUI. Filled with 2 datechooser combo box and 1 Buton.

And i have a Swingworker class named "MySwingWorker" for my long running task just like this;

package exampleproject;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.logging.Level;
import java.util.logging.Logger;

[code]....

Just i want add a progress bar for listening MySwingWorker's setProgress updates. When buton clicked swingworker should executed and progress bar should come to screen. I read many articles about that but not understand correctly. Because i am beginner in JAVA.

Question1: Should i (create new class) or (implement to current gui or swingworker class) for progressbar?

Question2: Should i fired progress bar first and execute swingworker from progressbar class? or should i execute swingworker first and fired progress bar later and how?