Kill a process created in a different class

Say I run a program in my Process class, something like:

Process p1 = Runtime.getRuntime().exec("setup.exe");
try {
} catch (InterruptedException e) {

And then I also have a cancel button in my GUI class, something along the lines of:

private void cancelButtonActionPerformed(ActionEvent e) {
    //Need to interrupt the thread from here!

Simply exiting the program out as is leaves my setup.exe process I created over in running, and that's a problem. Normally I'd call p1.destroy(), but I'm having issues making the connection in between the two classes.

Any suggestions would be much appreciated!


private void beginThread() {
        SwingWorker<String, Void>  myWorker = new SwingWorker<String, Void>() {
            protected String doInBackground() throws Exception {
                //Do some stuff
        return null;


Assuming your run the process in a separate thread, you can call processThread.interrupt() from your GUI class.

You then simply need to modify the try/catch to:

try {
} catch (InterruptedException e) {
    //don't ignore the exception:
    Thread.currentThread.interrupt(); //reset interrupted flag

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