boolean stopThread;
public void run() {
stopRun = false;
while (!stopThread) {
doWilhelm();
}
}
Button keineÄpfelMehrDa = new Button("...");
keineÄpfelMehrDa.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
stopThread = true;
schickeFrauAufDenMarkt();
}});