How to stop ActionEvent for a button

Hi,
I have a button "Start". On clicking the button, it will ask with a prompt "You really want to start" with Yes and No button. On clicking Yes button, the "Start" button is changed to "Cancel Stat..." and start running a process. If want to stop the process I have to click "Cancel Start..." button. But on clicking "Cancel Start..." button it again asks with the prompt "You really want to start" with Yes and No button. This should not happen.
Please help me regarding this issue.
Thanks in Advance....

On click of Start button, a prompt with Yes No button will be displayed.
On clicking Yes button, a process starts in a Thread and the button Start is changed to Cancel Start...
Now I have to stop the process that runs in the Thread
So, in the actionPerformed method, I have a flag and whenever the Cancel Start... is flipped, the process should be stopped which takes 1 min since a big query is taking a min to stop...
So, I can't give another text as Cancelling.... but I'm setting the text as "Start"
void cmdCancelStart_actionPerformed(ActionEvent e)
     isStop = true; //flag
     csv.isStopRequested(isStop); //The method used to stop the process
     cmdCancelStart.setBackground(Color.lightGray);
cmdCancelStart.setText("Start"); //For name sake I'm setting as Start if not it will be as "Cancel Start..." and only after 1 min it will change to "Start".
So, how I can overcome this?
Thanks in Advance...
}

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