How Can I stop my thread?

Question

Hi!
I'm developing an application of computacional geometry. It consist on a JFrame where I put some components like a JToolBar, a JTextArea, etc, and a JPanel. When the JPanel it's painted, there are a button that runs the JPanel in a new Thread.
The problem is that I have another button to stop the thread, but I can't stop it completely if it is in a I/O operation.
Here is the code of the run() method:
public void run()
Thread thisThread = Thread.currentThread();
while (kicker == thisThread)
if (runMode)
lhull.removeAllElements();
     hull.removeAllElements();
GrahamScan();
runMode = false;
aFrame.doneButton.setEnabled(true);
stop();
I stop the thread, but when it's in the GrahamScan() method, it continues painting things in the panel.
How can I stop the thread completely?
Thanxs in advance!!

Answer 1

What's the matter with my line separators and my code indentation?
Try to use yourThread.interrupt() at your button push event, and this code;
public void run()
Thread thisThread = Thread.currentThread();
try {
while (kicker == thisThread)
if (runMode)
lhull.removeAllElements();
hull.removeAllElements();
GrahamScan();
runMode = false;
aFrame.doneButton.setEnabled(true);
stop();
} catch (InterruptedException iEx){